SGP/EBBR/E13 - Net Radiometer Tilted Half Degree West

The net radiation daily peak on sunny days occured 1/2 hour after the net radiation peak 
at E2, E9, and the SIRS because the sensor was tipped to the west about 1/2 degree.

• Net radiation(mv_q)

• net radiation(q)

• net radiation(q)
• latent heat flux(e)
• h(h)

SGP/EBBR/E13 - Sensible and Latent Heat Fluxes Incorrect (AEM failure)

The AEM was stuck in the home 30 position most of this period.

Therefore, the sensible and latent heat fluxes are incorrect during most of this period.

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

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

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

SGP/EBBR/E13 - Loose connections

The tair_bot spiked around midday, as if it is temperature related, and may have indicated 
a loose connection.

The sensible and latyent heat fluxes and Bowen ratio were incorrect when this condition 
occurred.

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

• bottom air temperature(tair_bot)

• bottom air temperature(tair_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• h(h)

SGP/EBBR/E13 - All EBBR Data Missing

All E13 EBBR data was missing during these three periods.

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

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

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

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")

• base time(base_time)

• base time(base_time)

• base time(base_time)