Data Quality Report

Data Quality Report for Order ID: 188023
User ID: olattj1 Date completed: 2017-09-29

All DQRs

DQR ID	Subject	Affected Data Streams	Data Quality Metric
D110118.2	GRW/ECOR/M1 - Effects on ECOR CO2 Flux and Concentration by Aircraft	grw30ecorM1.b1	Suspect

DQR ID: D110118.2 (Back to Top)

Start Date	Start Time	End Date	End Time	Data Quality Metric
2009-04-15	15:30:00	2010-10-11	08:00:00	Suspect

Subject:	GRW/ECOR/M1 - Effects on ECOR CO2 Flux and Concentration by Aircraft
Affected 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	cvar_rot_uc (Rotated covariance uc) cvar_tc (Covariance tc) mean_c (Mean CO2 density) cvar_rot_wc (Rotated covariance wc) fc (CO2 flux) cvar_uc (Covariance uc) cvar_rot_vc (Rotated covariance vc) var_c (Variance of variable mean_c) cvar_wc (Covariance wc) cvar_vc (Covariance vc)