Accuracy assessment
; Climate data records
; Climate record
; Climate studies
; Cloud masks
; Data assimilation
; Data records
; Data sets
; Greenland
; Greenland Ice Sheet
; Ice sheet
; Mass balance
; Moderate resolution imaging spectroradiometer
; Polar pathfinder
; Satellite observations
; Spatial resolution
; Surface observation
; Surface temperatures
; Visible-infrared imager-radiometer suites
; Atmospheric temperature
; Data processing
; Glaciers
; Metadata
; Radiometers
; Remote sensing
; Satellite imagery
; Surface properties
; Merging
; algorithm
; AVHRR
; data assimilation
; data set
; ice sheet
; MODIS
; remote sensing
; satellite data
; spatial resolution
; surface temperature
; Arctic
; Greenland
; Greenland Ice Sheet
英文摘要:
The authors have developed a climate-quality data record of the clear-sky surface temperature of the Greenland Ice Sheet using the Moderate-Resolution Imaging Spectroradiometer (MODIS) ice-surface temperature (IST) algorithm. Daily and monthly quality-controlled MODIS ISTs of the Greenland Ice Sheet beginning on 1 March 2000 and continuing through 31 December 2010 are presented at 6.25-km spatial resolution on a polar stereographic grid along with metadata to permit detailed accuracy assessment. The ultimate goal is to develop a climate data record (CDR) that starts in 1981 with the Advanced Very High Resolution Radiometer (AVHRR) Polar Pathfinder (APP) dataset and continues with MODIS data from 2000 to the present, and into the Visible Infrared Imager Radiometer Suite (VIIRS) era (the first VIIRS instrument was launched in October 2011). Differences in the APP and MODIS cloud masks have thus far precluded merging the APP and MODIS IST records, though this will be revisited after the APP dataset has been reprocessed with an improved cloud mask. IST of Greenland may be used to study temperature and melt trends and may also be used in data assimilation modeling and to calculate ice sheet mass balance. The MODIS IST climate-quality dataset provides a highly consistent and well-characterized record suitable for merging with earlier and future IST data records for climate studies. The complete MODIS IST daily and monthly data record is available online.
Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; SSAI, Lanham, MD, United States; UMBC-JCET, Baltimore, MD, United States; Center for Satellite Applications and Research, NOAA/NESDIS, Madison, WI, United States; Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Hall D.K.,Comiso J.C.,Digirolamo N.E.,et al. A satellite-derived climate-quality data record of the clear-sky surface temperature of the greenland ice sheet[J]. Journal of Climate,2012-01-01,25(14)