Data Quality Reports for Session: 149926 User: pzhu Completed: 05/03/2013


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D110118.2GRW/ECOR/M1 - Effects on ECOR CO2 Flux and Concentration by Aircraftgrw30ecorM1.b1


DQRID : D110118.2
Start DateStart TimeEnd DateEnd Time
04/15/2009153010/11/20100800
Subject:
GRW/ECOR/M1 - Effects on ECOR CO2 Flux and Concentration by Aircraft
DataStreams:grw30ecorM1.b1
Description:
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.
Measurements:grw30ecorM1.b1:
  • variance of variable c(var_c)
  • CO2 flux(fc)
  • covariance uc(cvar_uc)
  • rotated covariance wc(cvar_rot_wc)
  • covariance tc(cvar_tc)
  • rotated covariance vc(cvar_rot_vc)
  • covariance wc(cvar_wc)
  • covaraince vc(cvar_vc)
  • Mean CO2 density(mean_c)
  • rotated covariance uc(cvar_rot_uc)


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