|Jacob, F. - VISITING SCIENTIST HRSL|
Submitted to: European Geophysical Society Meeting
Publication Type: Abstract Only
Publication Acceptance Date: February 14, 2002
Publication Date: April 22, 2002
Citation: Schmugge, T., Jacob, F., French, A., Ritchie, J., Chopping, M. Rango, A. 2002. ASTER thermal infrared observations at Jornada LTER site in New Mexico. In: Oral Presentation at the European Geophysical Society General Assembly, Nice, France April 22-26, 2002, Geophysical Research Abstracts, Volume 4, 2002, Abs. #EGS02-A-01021,22-26 April 2002 [CDROM]. Technical Abstract: Excellent ASTER scenes over our Jornada New Mexico test site were aquired on May 9, 2000, February 12, May 12, July 22, September 17, October 19 and November 11, 2001. There were simultaneous field campaigns for the 5/09/00, 5/12/01 and 9/17/01 scenes. Also, MASTER coverage was obtained for the 5/12/01 scene. The White Sands National Monument was also within several of the scenes. Emissivity values from the ASTER data from the 5/09/00 and 5/12/01 scenes for the gypsum sand at White Sands were in good agreement with values calculated from the lab spectra for gypsum and with each other. At the Jornada grass site the agreement between the ASTER results and those calculated from the lab spectra is very good. This is little surprising because there is generally a mix of bare soil and sensecent vegetation at this site so that we would have exptected to see a flatter spectral response due to the vegetation. The results for the Jornada mesquite site show a larger difference between the lab results and the ASTER results, e.g. 0.05 for the 8.29 micron channel. These results indicate ASTER and TES are working very well. The surface brightness temperatures from ASTER were in reasonable agreement with measurements made on the ground during the field campaigns.