SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect

In a trip to E26, I found that a bad spark gap through which the barometer was powered was 
causing pressure measurements to be incorrect.  The pressure readings oscillated with 
the voltage of the EBBR battery.  During daytime the voltage and thus the pressure would 
increase and vice versa during dark hours.

Apparently only the positive side of the power supply was properly connected through the 
spark gap and thus the voltage received by the pressure sensor was lower than required to 
power it properly.  Under this condition the perssure measurement varies with voltage 
level.  The pressure measurements therefore had a diurnal signature and usually were 
incorrect.  

The decreased pressure during most times would cause latent heat flux to be slightly 
overestimated and sensible heat flux to be slightly underestimated.

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• pressure at constant pressure surface(pres)
• corrected sensible heat flux(h)

SGP/EBBR/E27 - Soil Moisture #5 Insensitive

Soil moisture sensor #5 was insensitive and put out a value of around 30%.

Sensible and latent heat fluxes were not significantly affected by this
small error.

• Soil heat capacity 5(cs5)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• soil heat flow at the surface 5(g5)
• Soil moisture 5 (mass water/mass dry soil)(sm5)

SGP/EBBR/E2 - Soil Heat Flow #1 Spikes Down

Soil heat flow #1 spiked down at times.

Since tightening of connections this is occurring infrequently.  In most
cases, sensible and latent heat fluxes are not affected.

• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• average surface soil heat flow at the surface(ave_shf)
• soil heat flow at the surface 1(g1)
• corrected sensible heat flux(h)
• latent heat flux(e)
• 5 cm soil heat flow, site 1(shf1)

SGP/EBBR/E18 - Pressure Low

Pressure readings suddenly dropped to unrealistic levels.

Sensible Heat Flux was underestimated and Latent Heat Flux
was overestimated because of this problem.

• pressure at constant pressure surface(pres)

• pressure at constant pressure surface(pres)
• latent heat flux(e)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)

SGP/EBBR/E19 - AEM Hung Inbetween Home Positions

The AEM hung inbetween home positions, producing a home signal of zero.

Sensible and latent heat fluxes during this period are incorrect.

• bottom vapor pressure(vp_bot)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)

• Right air temperature(tair_r)
• Left air temperature(tair_l)

• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• latent heat flux(e)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)

SGP/EBBR/E15 - Soil Moisture Coefficients Incorrect

The soil Moisture coefficients used for E15 were incorrect from the time of
installation of the system in program version 8.  On 9 July 02 parameter 4  (an offset 
value) of program step 136 was changed from 9.5264 to the correct value 0.95264 (this error 
had been made by the vendor). The error masked the real problem (wrong soil type) and 
after 9 July 02 resulted in very low soil moisture measurements.  The coefficients used were 
for coarse sand.  On 28 Sep 04 I visited the E15 site and found the soil type a fine 
sandy clay or fine sandy loam.  I changed the coefficients  at 1509 GMT to those for a very 
fine sandy loam; this produced reasonable soil moistures for the soil type.

The old coefficients in parameters 4 through 9 for step 136 of the program were: 0.95264, 
-6.7859, 36.224, -58.619, 25.073, 4.2278

The new coefficients are: 10.241, -27.943, 49.523, -12.648, -52.643, 38.054

• Soil moisture 3 (mass water/mass dry soil)(sm3)
• soil heat flow at the surface 3(g3)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• soil heat flow at the surface 2(g2)
• latent heat flux(e)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• soil heat flow at the surface 1(g1)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• soil heat flow at the surface 5(g5)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• corrected sensible heat flux(h)
• soil heat flow at the surface 4(g4)
• Soil moisture 5 (mass water/mass dry soil)(sm5)

SGP/EBBR/E19 - Reprocess: Negative Net Rad calibrations

The calibration for negative net radiation was incorrectly entered in the datalogger 
program.

• specific humidity(q)

• corrected sensible heat flux(h)
• latent heat flux(e)
• specific humidity(q)

SGP/EBBR/E26 - Incorrect soil type coefficients used

The soil type coefficents for soil moisture were incorrect from the day
of the system installation on, making soil moisture values too large.

As a result, soil heat flows were overmeasured, and sensible and latent heat fluxes were 
underestimated.

• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Soil heat capacity 1(cs1)
• soil heat flow at the surface 1(g1)
• Soil heat capacity 4(cs4)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• corrected sensible heat flux(h)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• latent heat flux(e)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• soil heat flow at the surface 2(g2)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• Soil heat capacity 5(cs5)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• soil heat flow at the surface 5(g5)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Soil heat capacity 3(cs3)
• Soil heat capacity 2(cs2)
• average surface soil heat flow at the surface(ave_shf)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• soil heat flow at the surface 3(g3)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• soil heat flow at the surface 4(g4)
• 0-5 cm change in soil heat storage with time, site 2(ces2)

SGP/EBBR/E27 - SM2 Coefficients Incorect

Soil Moisture #2 coefficients in the CR10 datalogger program were incorrect during the 
time
that an old program version was installed.

• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Soil heat capacity 2(cs2)
• soil heat flow at the surface 2(g2)
• 0-5 cm change in soil heat storage with time, site 2(ces2)

• Soil moisture 2(r_sm2)

SGP/EBBR/E13 - Improved EBBR CR10 Program

Effective 20050331.2100, the EBBR.E13 CR10 program was revised to improve the quality of 
the primary measurements as follows:

1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow.  
This is applied to the individual soil sets.  Measurements outside the limits are 
rejected and the measurements within the limits are used to calculate the average soil heat flow.

2) Max and min limits are used to determine incorrect values of net radiation, sensible 
heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal.  If AEM 
signal is outside the limits, h and e are set to 999s.  If net radiation is outside the 
limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s.

Virtually no incorrect soil measurement will affect the primary measurements of h and e.

By setting h and e to 999s, it can be easily seen that the primary variables are 
incorrect; no other interpretation is possible.

Prior to 20050331, the improved CR10 program was NOT in effect.  DQRs have been submitted 
for known instances of incorrect soil measurements which affected the quality of the 
primary measurements of h and e.

Note: the DQR begin date is the begin date of the sgp30ebbrE13.b1 data stream.  The 
earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. 
sgp30ebbrE13.a1).

• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)
• corrected sensible heat flux(h)

SGP/EBBR/E15 - Improved EBBR CR10 Program

Effective 20050329.1900, the EBBR.E15 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050329, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE15.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE15.a1).

• latent heat flux(e)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)

SGP/EBBR/E18 - Improved EBBR CR10 Program

Effective 20050330.0000, the EBBR.E18 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050330, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE18.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE18.a1).

• latent heat flux(e)
• corrected sensible heat flux(h)
• average surface soil heat flow at the surface(ave_shf)

SGP/EBBR/E19 - Improved EBBR CR10 Program

Effective 20050331.1600, the EBBR.E19 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050331, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE19.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE19.a1).

• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• latent heat flux(e)

SGP/EBBR/E20 - Improved EBBR CR10 Program

Effective 20050330.1900, the EBBR.E20 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050330, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE20.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE20.a1).

• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)
• corrected sensible heat flux(h)

SGP/EBBR/E22 - Improved EBBR CR10 Program

Effective 20050330.1930, the EBBR.E20 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050330, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE20.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE20.a1).

• corrected sensible heat flux(h)
• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)

SGP/EBBR/E26 - Improved EBBR CR10 Program

Effective 20050331.1700, the EBBR.E26 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050331, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE26.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE26.a1).
~

• latent heat flux(e)
• corrected sensible heat flux(h)
• average surface soil heat flow at the surface(ave_shf)

SGP/EBBR/E27 - Improved EBBR CR10 Program

Effective 20050330.1730, the EBBR.E27 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050330, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE27.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE27.a1).

• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• latent heat flux(e)

SGP/EBBR/E2 - Improved EBBR CR10 Program

Effective 20050324.1700, the EBBR.E2 CR10 program was revised to improve the quality of 
the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h and e are set to 
999s.  If net radiation is outside the limits, h and e are set to 999s. If h or e are 
outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary variables are 
incorrect; no other interpretation is possible.
   
Prior to 20050324, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE2.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE2.a1).

• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• latent heat flux(e)

SGP/EBBR/E4 - Improved EBBR CR10 Program

Effective 20050323.1800, the EBBR.E4 CR10 program was revised to improve the quality of 
the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h and e are set to 
999s.  If net radiation is outside the limits, h and e are set to 999s. If h or e are 
outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary variables are 
incorrect; no other interpretation is possible.
   
Prior to 20050323, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE4.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE4.a1).

• corrected sensible heat flux(h)
• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)

SGP/EBBR/E7 - Improved EBBR CR10 Program

Effective 20050322.1900, the EBBR.E7 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050322, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE7.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE7.a1).

• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• latent heat flux(e)

SGP/EBBR/E8 - Improved EBBR CR10 Program

Effective 20050322.1730, the EBBR.E8 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050322, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE8.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE8.a1).

• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)
• corrected sensible heat flux(h)

SGP/EBBR/E9 - Improved EBBR CR10 Program

Effective 20050322.1600, the EBBR.E9 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050322, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE9.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE9.a1).

• latent heat flux(e)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)

SGP/EBBR/E12 - Improved EBBR CR10 Program

Effective 20050329.1830, the EBBR.E12 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050329, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE12.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE12.a1).

• latent heat flux(e)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)

SGP/EBBR/E12 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E12 data collected by ARM back to the installation of the 
instrument in August 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.  

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E13 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E13 data collected by ARM back to the installation of the 
instrument in September 1992.  Please see the current metadata for correct information.  
These changes do not affect data values or quality.

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E15 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E15 data collected by ARM back to the installation of the 
instrument in September 1992. Please see the current metadata for correct information.  
These changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E18 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E18 data collected by ARM back to the installation of the 
instrument in July 1997. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E19 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E19 data collected by ARM back to the beginning of the data 
set in May 1997. Please see the current metadata for correct information.  These changes 
do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E27 - metadata corrections

On 20050816, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E27 data collected by ARM back to the installation of the 
instrument in May 2003. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E2 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E2 data collected by ARM back to the installation of the 
instrument in May 1997. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E4 - metadata corrections

On 20050817, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E4 data collected by ARM back to the installation of the 
instrument in April 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E7 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E7 data collected by ARM back to the installation of the 
instrument in May 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E8 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E8 data collected by ARM back to the installation of the 
instrument in December 1992. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E9 - metadata corrections

On 20050420, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E9 data collected by ARM back to the installation of the 
instrument in December 1992. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E20 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E20 data collected by ARM back to the installation of the 
instrument in April 1993. Please see the current metadata for correct information.  These 
changes do not
affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E22 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E22 data collected by ARM back to the installation of the 
instrument in April 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

SGP/EBBR/E26 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the 
instrument in June 1992. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)