SGP/EBBR/E9 - Reprocess: Soil Temperature #5 Incorrect

Soil temperature # 5 was incorrect most of the time, leading to incorrect surface heat 
flow, latent heat flux and sensible heat flux.  The heat fluxes can be recalculated by using 
soil sets 1-4 as follows:

ave_shf = (g1 + g2 + g3 + g4)/4
e = -(q + ave_shf)/(1 + bowen)
h = -(q + e + ave_shf)

• latent heat flux(e)
• soil heat flow at the surface 5(g5)
• average surface soil heat flow at the surface(ave_shf)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• corrected sensible heat flux(h)
• 0-5 cm integrated soil temperature, site 5(ts5)

• 0-5 cm integrated soil temperature, site 5(ts5)
• corrected sensible heat flux(h)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• soil heat flow at the surface 5(g5)
• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)

SGP/EBBR/E9 - Right Humidity Suspect

The Right Humidity measurement was normally incorrect, although it is often difficult to 
determine it by looking at the measurement.  The measurements float around, sometimes 
being too large and sometimes being too small, through most of the day, particularly for the 
hour before sunset through the hour after sunrise.  Great care and comparison with 
surrounding EBBR sites would be needed to be able to use any of the latent and sensible heat 
flux measurements from E9 for this period. 

Another DQPR has been issued to fix this problem, which has eluded repair efforts so far.

• bottom relative humidity(hum_bot)
• latent heat flux(e)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• corrected sensible heat flux(h)
• top vapor pressure(vp_top)

• top vapor pressure(vp_top)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• bottom vapor pressure(vp_bot)

• bottom vapor pressure(vp_bot)
• latent heat flux(e)
• corrected sensible heat flux(h)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)

SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR 
Header

The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the 
EBBR 30 minute netcdf header have been incorrect from the beginning 
of processing the data into netcdf files.  The correct units are 
MJ/m^3/C.

This does not affect the data quality.

• Soil heat capacity 4(cs4)
• Soil heat capacity 5(cs5)
• Soil heat capacity 3(cs3)
• Soil heat capacity 2(cs2)
• Soil heat capacity 1(cs1)

• Soil heat capacity 3(cs3)
• Soil heat capacity 2(cs2)
• Soil heat capacity 5(cs5)
• Soil heat capacity 4(cs4)
• Soil heat capacity 1(cs1)

• Soil heat capacity 3(cs3)
• Soil heat capacity 2(cs2)
• Soil heat capacity 5(cs5)
• Soil heat capacity 4(cs4)
• Soil heat capacity 1(cs1)

• Soil heat capacity 1(cs1)
• Soil heat capacity 4(cs4)
• Soil heat capacity 3(cs3)
• Soil heat capacity 2(cs2)
• Soil heat capacity 5(cs5)

• Soil heat capacity 1(cs1)
• Soil heat capacity 4(cs4)
• Soil heat capacity 5(cs5)
• Soil heat capacity 2(cs2)
• Soil heat capacity 3(cs3)

• Soil heat capacity 4(cs4)
• Soil heat capacity 2(cs2)
• Soil heat capacity 1(cs1)
• Soil heat capacity 3(cs3)
• Soil heat capacity 5(cs5)

• Soil heat capacity 1(cs1)
• Soil heat capacity 4(cs4)
• Soil heat capacity 5(cs5)
• Soil heat capacity 2(cs2)
• Soil heat capacity 3(cs3)

• Soil heat capacity 2(cs2)
• Soil heat capacity 5(cs5)
• Soil heat capacity 4(cs4)
• Soil heat capacity 1(cs1)
• Soil heat capacity 3(cs3)

• Soil heat capacity 1(cs1)
• Soil heat capacity 5(cs5)
• Soil heat capacity 2(cs2)
• Soil heat capacity 3(cs3)
• Soil heat capacity 4(cs4)

• Soil heat capacity 2(cs2)
• Soil heat capacity 3(cs3)
• Soil heat capacity 4(cs4)
• Soil heat capacity 1(cs1)
• Soil heat capacity 5(cs5)

• Soil heat capacity 5(cs5)
• Soil heat capacity 3(cs3)
• Soil heat capacity 4(cs4)
• Soil heat capacity 1(cs1)
• Soil heat capacity 2(cs2)

• Soil heat capacity 3(cs3)
• Soil heat capacity 1(cs1)
• Soil heat capacity 4(cs4)
• Soil heat capacity 5(cs5)
• Soil heat capacity 2(cs2)

• Soil heat capacity 5(cs5)
• Soil heat capacity 3(cs3)
• Soil heat capacity 4(cs4)
• Soil heat capacity 2(cs2)
• Soil heat capacity 1(cs1)

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)