SGP/EBBR/E20 - Suspect Measurements

Some measurements may be incorrect because of low supply voltage.

• 5 cm soil heat flow, site 2(shf2)
• base time(base_time)
• 5 cm soil heat flow, site 3(shf3)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• Time offset of tweaks from base_time(time_offset)
• Reference Thermistor Temperature(tref)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 3(cs3)
• 5 cm soil heat flow, site 5(shf5)
• average surface soil heat flow(ave_shf)
• Bottom humidity(hum_bot)
• Soil heat capacity 1(cs1)
• volumetric soil moisture, site 2(sm2)
• Soil heat capacity 4(cs4)
• top vapor pressure(vp_top)
• 0-5 cm integrated soil temperature, site 3(ts3)
• scalar wind speed(wind_s)
• 0-5 cm integrated soil temperature, site 4(ts4)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top air temperature(tair_top)
• Temperature of bottom humidity sensor chamber(thum_bot)
• 0-5 cm integrated soil temperature, site 5(ts5)
• net radiation(q)
• bottom air temperature(tair_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Soil heat capacity 2(cs2)
• lon(lon)
• volumetric soil moisture, site 1(sm1)
• Dummy altitude for Zeb(alt)
• soil heat flow, site 1(g1)
• Top humidity(hum_top)
• 0-5 cm integrated soil temperature, site 2(ts1)
• volumetric soil moisture, site 5(sm5)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• lat(lat)
• 0-5 cm integrated soil temperature, site 2(ts2)
• volumetric soil moisture, site 4(sm4)
• Temperature of the top humidity chamber(thum_top)
• soil heat flow, site 5(g5)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• h(h)
• wind direction (relative to true north)(wind_d)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• soil heat flow, site 4(g4)
• Retrieved pressure profile(pres)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• soil heat flow, site 2(g2)
• vector wind speed(res_ws)
• 5 cm soil heat flow, site 4(shf4)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• volumetric soil moisture, site 3(sm3)
• 5 cm soil heat flow, site 1(shf1)
• soil heat flow, site 3(g3)
• Soil heat capacity 5(cs5)
• bottom vapor pressure(vp_bot)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)

• Soil heat flow 4(mv_hft4)
• Soil temperature 2(rr_ts2)
• Soil heat flow 5(mv_hft5)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil moisture 3(r_sm3)
• Reference temperature(rr_tref)
• Soil temperature 3(rr_ts3)
• Soil temperature 5(rr_ts5)
• lat(lat)
• Soil temperature 4(rr_ts4)
• Temperature of left humidity sensor chamber(rr_thum_l)
• lon(lon)
• Left air temperature(tair_l)
• base time(base_time)
• Soil temperature 1(rr_ts1)
• Time offset of tweaks from base_time(time_offset)
• Battery(bat)
• Net radiation(mv_q)
• Home signal(mv_home)
• Dummy altitude for Zeb(alt)
• Atmospheric pressure(mv_pres)
• Soil moisture 4(r_sm4)
• Soil moisture 5(r_sm5)
• Soil heat flow 1(mv_hft1)
• Soil heat flow 2(mv_hft2)
• Signature(signature)
• Left relative humidity(mv_hum_l)
• Soil heat flow 3(mv_hft3)
• scalar wind speed(wind_s)
• Right air temperature(tair_r)
• Right relative humidity(mv_hum_r)
• Wind direction (relative to true north)(mv_wind_d)
• Soil moisture 2(r_sm2)
• Soil moisture 1(r_sm1)

• vector wind speed(res_ws)
• Reference Thermistor Temperature(tref)
• Home signal(home)
• wind direction (relative to true north)(wind_d)
• bottom vapor pressure(vp_bot)
• Retrieved pressure profile(pres)
• Temperature of bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• net radiation(q)
• time(time)
• Top humidity(hum_top)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Bottom humidity(hum_bot)
• top air temperature(tair_top)
• lat(lat)
• lon(lon)
• scalar wind speed(wind_s)
• Temperature of the top humidity chamber(thum_top)
• bottom air temperature(tair_bot)
• Time offset of tweaks from base_time(time_offset)
• base time(base_time)
• Dummy altitude for Zeb(alt)

SGP/EBBR/E20 - Reprocess: Wind Direction 20 Degrees Low

The EBBR wind direction was found to be misaligned 20 degrees low. 

This bias should have had no effect on the res_ws or sigma_wd measurements.

• wind direction (relative to true north)(wind_d)

• Wind direction (relative to true north)(mv_wind_d)

• wind direction (relative to true north)(wind_d)

SGP/EBBR/E20 - Reprocess: Wind Direction 65 Degrees Low

The wind direction sensor reported wind directions that were 65 degrees too low because of 
a mis-alignment.

This bias should have no effect on the res_ws or sigma_wd measurements.

The wind direction data could be re-processed by adding 65 degrees.

• wind direction (relative to true north)(wind_d)

• Wind direction (relative to true north)(mv_wind_d)

• wind direction (relative to true north)(wind_d)

SGP/EBBR/E20 - Wind Direction 50 Degrees High

The wind direction was offset high about 50 degrees.

• wind direction (relative to true north)(wind_d)

• Wind direction (relative to true north)(mv_wind_d)

• wind direction (relative to true north)(wind_d)

SGP/EBBR/E20 - Wind Direction Incorrect

The wind direction differed from the co-located SMOS by 50 deg during part of the stated 
period and the electronics had failed completely resulting in a constant 135 degrees for 
the following dates and times:
08/15 0230-0430, 0830-1530 and 09/03 0200-0300, 0500 - 09/10 2230.

Sensible and latent heat fluxes were not affected by this problem.

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• vector wind speed(res_ws)

• Wind direction (relative to true north)(mv_wind_d)

• wind direction (relative to true north)(wind_d)
• vector wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)