The Surface Cloud Grid (SfcCldGrid) VAP uses the output of the Shortwave Flux An
alysis VAP (Long and Ackerman, 2000, Long et al., 1999; Long, 2001) at 15-minute
resolution for each of the 21 surface radiometer sites of the ARM Southern Grea
t Plains (SGP) network area as input. The SfcCldGrid VAP uses the Analytic Appro
ximation interpolation technique of Caracena (1987) to produce a 0.25O X 0.25O g
rid across the ARM SGP area at 15-minute resolution. (More information about the
SfcCldGrid VAP, and an analysis of the interpolation uncertainties associated w
ith the gridded output, is presented in the ARM STM 2002 poster "Interpolation U
ncertainties Across the ARM SGP Area" , and the corresponding extended abstract,
by Christy and Long.) By far, most analyses and comparisons to date have used SG
P Central Facility (CF) data. The gridded output of the SfcCldGrid VAP allows us to ask the question: "How well does the SGP CF represent the broader area on va
rious time and spatial scales?" To help address this question, we analyze the SG
P grid from the grid point associated with the CF compared to grid "boxes" of in
creasing size centered on the CF grid point.
Revised: January 10, 2003 |
Published: July 1, 2002
Citation
Long C.N., T.P. Ackerman, and J.E. Christy. 2002.Variability Across the ARM SGP Area by Temporal and Spatial Scale. In Atmospheric Radiation Measurements and Applications in Climate, Proceedings- SPIE The International Society of Optical Engineering, edited by Shaw, J.A., 4815, 51-57. Bellingham, Washington:SPIE - The International Society for Optical Engineering.PNNL-SA-37666.