SGP/CO2/C1 - Reprocess: calibration error

A problem was identified with the calibration of the instrument performed on May 27, 2005. 
A study to correct this bad calibration is underway.

• WPL corrected CO2 flux(fc_corr)
• mean water vapor concentration (q)(mean_q)
• WPL corrected latent heat flux(le)

SGP/CO2/C1 - Met stand was moved

Ameriflux program (Hank Loescher from Oregon state university) visits the site to 
intercompare his instruments with our 4m flux system.
The met stand was moved by 30 feet and consequently:
1. Soil moisture sensors were disconnected,
2. Soil temperature sensors were disconnected,
3. Soil heat plates were disconnected,
4. The true direction of the anemometer boom was 230 degrees instead of the regular 270 
degrees.

• average of two lower soil temperature sensors(mean_t_soil_lower)
• average of four upper soil moisture sensors(mean_m_soil_upper)
• Unit Vector Wind Direction(wdir)
• average of four lower soil moisture sensors(mean_m_soil_lower)
• average of two middle soil temperature sensors(mean_t_soil_middle)
• average of up to four soil heat flux sensors(mean_g_soil)
• average of two upper soil temperature sensors(mean_t_soil_upper)

SGP/CO2/C1 - downwelling longwave hemispheric irradiance incorrect

Downwelling longwave radiation measurements (variable "r_down_long_hemisp") are bad due to 
a wiring issue. Users should not use the downwelling longwave hemispheric irradiance 
during this period. The downwelling shortwave and longwave radiation at CF is also available 
from the Broadband Radiometer Station (BRS).

• downwelling longwave hemispheric irradiance t_rad corrected(r_down_long_hemisp)