SGP/EBBR/E13 - Battery voltage drop

On Friday 2 November, 1995 the instrument heaters were switched on.  By
4 November, the solar panel was not able to maintain the battery voltage for
the cold night conditions that existed.  On Monday, 5 November the heaters
were turned off, but the poor condition of the battery did not allow it,
once partially drained, to recharge sufficiently for nighttime conditions.
On 8 November, at 2106 GMT, the battery was replaced (resulting in missing
data for 2030-2130 GMT).  Most of the data for the period above is incorrect,
especially data from the sensors that require at least 11 volts DC power.
The data that is incorrect is listed below.

5 minute:   tref, tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
            vp_top, vp_bot, q, pres, home

15 minute:  rr_thum_r, rr_thum_l, rr_ts1, rr_ts2, rr_ts3, rr_ts4, rr_ts5,
            rr_tref, mv_hum_r, mv_hum_l, mv_pres, mv_home, mv_q, mv_hft1,
            mv_hft2, mv_hft3, mv_hft4, mv_hft5, tair_r, tair_l

30 minute:  tair_top, tair_bot, tref, thum_top, thum_bot, hum_top, hum_bot,
            vp_top, vp_bot, pres, home_15, home_30, bowen, e, h, shf, shf1,
            shf2, shf3, shf4, shf5, c_shf1, c_shf2, c_shf3, c_shf4, c_shf5,
            ts1, ts2, ts3, ts4, ts5, q, g1, g2, g3, g4, g5, ces1, ces2,
            ces3, ces4, ces5

Periods of time affected (these are the 30 minute periods that are
incorrect - incorrect 5 and 15 minute data may also occur for all or part
of the previous half hour):

4 Nov 95: 1200-1400 GMT
5 Nov 95: 0330-1430 GMT
6 Nov 95: 0000-1530 GMT
7 Nov 95: 0000-1400 GMT
8 Nov 95: 0000-1400 GMT

• AEM position indicator(home_signal)
• Soil heat flow 4 (mV)(soil_heat_flow_4_mv)
• Right air temperature(temp_air_right)
• Left air temperature(temp_air_left)
• Soil heat flow 1 (mV)(soil_heat_flow_1_mv)
• Soil temperature 3 (resistance ratio)(soil_temp_3_rr)
• Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
• Soil heat flow 3 (mV)(soil_heat_flow_3_mv)
• Reference temperature in enclosure (resistance ratio)(temp_reference_rr)
• Soil temperature 2 (resistance ratio)(soil_temp_2_rr)
• Net radiation (mV)(net_radiation_mv)
• Soil heat flow 2 (mV)(soil_heat_flow_2_mv)
• Soil temperature 1 (resistance ratio)(soil_temp_1_rr)
• Soil temperature 5 (resistance ratio)(soil_temp_5_rr)
• Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
• Soil heat flow 5 (mV)(soil_heat_flow_5_mv)
• Left relative humidity (mV)(rh_left_mv)
• Right relative humidity (mV)(rh_right_mv)
• Soil temperature 4 (resistance ratio)(soil_temp_4_rr)

• Bottom air temperature(temp_air_bottom)
• Top relative humidity (fractional)(rh_top_fraction)
• Net radiation(net_radiation)
• Top T/RH sensor temperature(temp_trh_top)
• Reference temperature in enclosure(temp_reference)
• Top vapor pressure(vapor_pressure_top)
• Bottom vapor pressure(vapor_pressure_bottom)
• Atmospheric pressure(atmos_pressure)
• Top air temperature(temp_air_top)
• Bottom T/RH sensor temperature(temp_trh_bottom)
• AEM position indicator(home_signal)
• Bottom relative humidity (fractional)(rh_bottom_fraction)

• Bowen ratio(bowen_ratio)
• Top T/RH sensor temperature(temp_trh_top)
• AEM position indicator 0 to 15 mins(home_signal_15)
• Surface sensible heat flux(sensible_heat_flux)
• Change in energy storage 3, 0-5 cm soil layer(energy_storage_change_3)
• Top relative humidity (fractional)(rh_top_fraction)
• Change in energy storage 2, 0-5 cm soil layer(energy_storage_change_2)
• Change in energy storage 1, 0-5 cm soil layer(energy_storage_change_1)
• Bottom air temperature(temp_air_bottom)
• Surface soil heat flux 5(surface_soil_heat_flux_5)
• Reference temperature in enclosure(temp_reference)
• Soil heat flow 1, corrected for soil moisture(corr_soil_heat_flow_1)
• Top air temperature(temp_air_top)
• Soil heat flow 2, corrected for soil moisture(corr_soil_heat_flow_2)
• Soil heat flow 3, corrected for soil moisture(corr_soil_heat_flow_3)
• Soil heat flow 4, corrected for soil moisture(corr_soil_heat_flow_4)
• Soil heat flow 5, corrected for soil moisture(corr_soil_heat_flow_5)
• Change in energy storage 5, 0-5 cm soil layer(energy_storage_change_5)
• Change in energy storage 4, 0-5 cm soil layer(energy_storage_change_4)
• Net radiation(net_radiation)
• AEM position indicator 15 to 30 mins(home_signal_30)
• Bottom relative humidity (fractional)(rh_bottom_fraction)
• Soil heat flow 2(soil_heat_flow_2)
• Soil heat flow 3(soil_heat_flow_3)
• Soil heat flow 4(soil_heat_flow_4)
• Soil heat flow 5(soil_heat_flow_5)
• Surface soil heat flux 3(surface_soil_heat_flux_3)
• Surface soil heat flux 4(surface_soil_heat_flux_4)
• Surface soil heat flux 1(surface_soil_heat_flux_1)
• Surface soil heat flux 2(surface_soil_heat_flux_2)
• Soil heat flow 1(soil_heat_flow_1)
• Half hour averaged soil temperature 5(soil_temp_5)
• Half hour averaged soil temperature 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Soil temperature 2(soil_temp_2)
• Surface latent heat flux(latent_heat_flux)
• Soil temperature 1(soil_temp_1)
• Bottom vapor pressure(vapor_pressure_bottom)
• Bottom T/RH sensor temperature(temp_trh_bottom)
• Top vapor pressure(vapor_pressure_top)