Abstract:
The Data Quality Screening Service filters bad-quality data points from a data file using quality variables included within the file. The service is available through the Mirador search tool. It generates output files that have the same structure as the input (albeit with a few extra variables) and is thus usable in any tool made to work with the original product. The service replaces data ... objects (arrays) with the corresponding screened (filtered) data arrays. Data values deemed unusable are set to Fill Values. The output file also includes the quality mask used for filtering and the original (unscreened) data values in additional data objects. There will also be a file-level metadata object describing what was done in the quality screening process.
Currently, the Data Quality Screening Service is available for AIRS Standard Retrieval (Version 5, also known as AIRX2RET.005, AIRS2RET.005 or AIRH2RET.005), through the Mirador Search tool. Search on Keyword AIRX2RET to get a dataset list and then the "005" link to View Files. From the File Listing page for one of these products, you can invoke the service immediately for individual files by clicking on the "HDF (Quality Screened)" link. The process takes about 20 seconds to run and will download a file with the same name as the original, prefaced by "QC_", e.g., QC_AIRS.2010.03.31.070.L2.RetStd.v5.2.2.0.G10091061738.hdf. Batch Downloads and Custom Screening Criteria.
If you want to apply the service in batch, OR use something other than the default recommended criteria, then add the selected files to the Shopping Cart. In the Shopping Cart page, select the service "HDF (Quality Screening)". This will bring up a screen allowing you to set individual criteria by variable, as well as to visualize the effect that different screening scenarios will have on the data. After you make your selections, click Submit. Click Continue to the Shopping Cart and then click Checkout in the next screen. In the Checkout screen, click URL List (Data) to get the list of URLs to apply the DQSS in batch. As you fetch each URL, the DQSS will be applied on the fly.
Description:
MIRADOR: An Interface for Searching, Browsing, and Ordering Earth Science Data At NASA. Currently, the Data Quality Screening Service is available for AIRS Standard Retrieval (Version 5, also known as AIRX2RET.005, AIRS2RET.005 or AIRH2RET.005), through Mirador.
Name:
GES DISC HELP DESK SUPPORT GROUP
Phone:
301-614-5224
Fax:
301-614-5268
Email:
gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Distribution Media
Distribution_Media:
Online
Fees:
No fees
Personnel
CHRISTOPHER
LYNNES Role:
TECHNICAL CONTACT
Phone:
301-614-5185
Fax:
301-614-5268
Email:
Christopher.S.Lynnes at nasa.gov
Contact Address:
NASA GSFC, Code 610.2 City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
U.S.A.
GES DISC HELP DESK SUPPORT GROUP Role:
TECHNICAL CONTACT
Phone:
301-614-5224
Fax:
301-614-5268
Email:
gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
TYLER
B.
STEVENS Role:
SERF AUTHOR
Phone:
(301) 614-6898
Fax:
301-614-5268
Email:
Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Publications/References
Diner, D. J., J. V. Martonchik, C. Borel, S. A. W. Gerstl, H. R. Gordon, Y. Knyazikhin, R. Myneni, B. Pinty, and M. M. Verstraete. 1999. MISR Level-2 Surface Retrieval Algorithm Theoretical Basis Document. Pasadena, CA: Jet Propulsion Laboratory.
Earth Science Data and Information System (ESDIS). 1996. EOS Ground System (EGS) Systems and Operations Concept. Greenbelt, MD: Goddard Space Flight ... Center.
Greuell, W. and J. Oerlemans. (2005). Validation of AVHRR- and MODIS-Derived Albedos of Snow and Ice Surfaces by Means of Helicopter Measurements. Journal of Glaciology, 51(172):37-48.
Hall, Dorothy K., George A. Riggs, and Vincent V. Salomonson. September 2001a. Algorithm Theoretical Basis Document (ATBD) for the MODIS Snow-, Lake Ice- and Sea Ice-Mapping Algorithms. Greenbelt, MD: Goddard Space Flight Center.
Hall, Dorothy K. and J. Martinec. 1985. Remote Sensing of Ice and Snow. London: Chapman and Hall.
Hall, Dorothy K., J. L. Foster, D. L. Verbyla, A. G. Klein, and C. S. Benson. 1998. Assessment of Snow Cover Mapping Accuracy in a Variety of Vegetation Cover Densities in Central Alaska. Remote Sensing of the Environment 66:129-137.
Hall, Dorothy K., J. L. Foster, Vincent V. Salomonson, A. G. Klein, and J. Y. L. Chien. 2001b. Development of a Technique to Assess Snow-Cover Mapping Accuracy from Space. IEEE Transactions on Geoscience and Remote Sensing 39(2):232-238.
Hall, Dorothy K. and George A. Riggs. 2006. Assessment of Errors in the MODIS Suite of Snow-Cover Products. Hydrological Processes.
Hapke, B. 1993. Theory of Reflectance and Emittance Spectroscopy. Cambridge: Cambridge University Press.
Justice, C. O. 2002. An Overview of MODIS Land Data Processing and Product Status. Remote Sensing of the Environment, 83(1):3-15. Klein, A. MODIS Snow Albedo Prototype. 2003.
Klein, A. G. and Julienne Stroeve. 2002. Development and Validation of a Snow Albedo Algorithm for the MODIS Instrument. Annals of Glaciology 34:45-52.
Klein, A. G., Dorothy K. Hall, and George A. Riggs. 1998. Improving Snow-Cover Mapping in Forests Through the use of a Canopy Reflectance Model. Hydrologic Processes 12(10-11):1723-1744.
Markham, B. L. and J. L. Barker. 1986. Landsat MSS and TM Post-Calibration Dynamic Ranges, Exoatmospheric Reflectances and At-Satellite Temperatures. EOSAT Technical Notes 1:3-8.
MODIS Characterization and Support Team (MCST). 2000. MODIS Level-1B Product User's Guide for Level-1B Version 2.3.x Release 2. MCST Document #MCM-PUG-01-U-DNCN.
Painter, Thomas H. and J. Dozier. 2004. Measurements of the Hemispherical Directional Reflectance of Snow at Fine Spectral and Angular Resolution. Journal of Geophysical Research-Atmospheres, 109(D18):D18115. doi:10.1029/2003JD004458.
Pearson II, F. 1990. Map Projections: Theory and Applications. Boca Raton, FL: CRC Press, Inc.
Riggs, George A., Dorothy K. Hall, and Vincent V. Salomonson. December 2006. MODIS Snow Products User Guide to Collection 5. PDF.
Stroeve, Julienne, Anne Nolin, and K. Steffen. 997. Comparison of AVHRR-Derived and In Situ Surface Albedo Over the Greenland Ice Sheet. Remote Sensing of the Environment, 62:262-276.
Stroeve, Julienne, J. E. Box, Terry Haran. 2006. Evaluation of the MODIS (MOD10A1) Daily Snow Albedo Product Over the Greenland Ice Sheet. Remote Sensing of the Environment, 105:155-171.
