GRW/ECOR/M1 - Reprocessed: ECOR Wind direction offset corrected

The ECOR sonic anemometer was initially aligned to an east declination
instead of a west declination.  For the period stated, ECOR wind direction
was 21 degrees too high.

Data were reprocessed 20090602 and archived 20090619.

• wind_dir

GRW/ECOR/M1 - Effects on ECOR CO2 Flux and Concentration by Aircraft

Aircraft landings, departures, and running aircraft on the airport pad were found to 
produce spikes in the half hourly CO2 flux and small spikes in CO2 concentration on many days 
during the entire deployment of the AMF1 at GRW. This influence sometimes occurred 
multiple periods in a day; this was typical of the year of data.  The spikes range from only 
several micromoles s-1 m-2 to one hundred or more for flux (a typical spike was in the 
twenties) and near zero to 1.0 mmoles m-3 for CO2 concentration (typically around 0.15).

Occasionally an influence on water vapor density was detected, but this was fairly rare 
and usually of very small magnitude.

• variance of variable c(var_c)
• rotated covariance wc(cvar_rot_wc)
• covariance uc(cvar_uc)
• CO2 flux(fc)
• rotated covariance vc(cvar_rot_vc)
• covariance tc(cvar_tc)
• covariance wc(cvar_wc)
• covaraince vc(cvar_vc)
• Mean CO2 density(mean_c)
• rotated covariance uc(cvar_rot_uc)