Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet
Regional "clear sky" surface temperature increases since the early 1980s in the Arctic, measured using Advanced Very High Resolution Radiometer (AVHRR) infrared data, range from 0.57+/-0.02 deg C to 72+/-0.10 deg C per decade. Arctic warming has important implications for ice-sheet mass ba...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20110008399 2023-05-15T14:59:52+02:00 Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet DiGirolamo, Nicolo E. Stock, Larry V. Hall, Dorthy K. Comiso, Josefino C. Shuman, Christopher A. Unclassified, Unlimited, Publicly available April 17, 2010 application/pdf http://hdl.handle.net/2060/20110008399 unknown Document ID: 20110008399 http://hdl.handle.net/2060/20110008399 Copyright, Distribution as joint owner in the copyright CASI Meteorology and Climatology Association of American Geographer''s Annual Meeting; 17 Apr. 2010; Washington, DC; United States 2010 ftnasantrs 2019-07-21T01:05:30Z Regional "clear sky" surface temperature increases since the early 1980s in the Arctic, measured using Advanced Very High Resolution Radiometer (AVHRR) infrared data, range from 0.57+/-0.02 deg C to 72+/-0.10 deg C per decade. Arctic warming has important implications for ice-sheet mass balance because much of the periphery of the Greenland Ice Sheet is already near 0 deg C during the melt season, and is thus vulnerable to rapid melting if temperatures continue to increase. An increase in melting of the ice sheet would accelerate sea-level rise, an issue affecting potentially billions of people worldwide. To quantify the ice-surface temperature (IST) of the Greenland Ice Sheet, and to provide an IST dataset of Greenland for modelers that provides uncertainties, we are developing a climate-data record (CDR) of daily "clear-sky" IST of the Greenland Ice Sheet, from 1982 to the present using AVHRR (1982 - present) and Moderate-Resolution Imaging Spectroradiometer (MODIS) data (2000 - present) at a resolution of approximately 5 km. Known issues being addressed in the production of the CDR are: time-series bias caused by cloud cover (surface temperatures can be different under clouds vs. clear areas) and cross-calibration in the overlap period between AVHRR instruments, and between AVHRR and MODIS instruments. Because of uncertainties, mainly due to clouds, time-series of satellite IST do not necessarily correspond with actual surface temperatures. The CDR will be validated by comparing results with automatic-weather station data and with satellite-derived surface-temperature products and biases will be calculated. Other/Unknown Material Arctic Greenland Ice Sheet NASA Technical Reports Server (NTRS) Arctic Greenland |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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Meteorology and Climatology |
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Meteorology and Climatology DiGirolamo, Nicolo E. Stock, Larry V. Hall, Dorthy K. Comiso, Josefino C. Shuman, Christopher A. Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet |
topic_facet |
Meteorology and Climatology |
description |
Regional "clear sky" surface temperature increases since the early 1980s in the Arctic, measured using Advanced Very High Resolution Radiometer (AVHRR) infrared data, range from 0.57+/-0.02 deg C to 72+/-0.10 deg C per decade. Arctic warming has important implications for ice-sheet mass balance because much of the periphery of the Greenland Ice Sheet is already near 0 deg C during the melt season, and is thus vulnerable to rapid melting if temperatures continue to increase. An increase in melting of the ice sheet would accelerate sea-level rise, an issue affecting potentially billions of people worldwide. To quantify the ice-surface temperature (IST) of the Greenland Ice Sheet, and to provide an IST dataset of Greenland for modelers that provides uncertainties, we are developing a climate-data record (CDR) of daily "clear-sky" IST of the Greenland Ice Sheet, from 1982 to the present using AVHRR (1982 - present) and Moderate-Resolution Imaging Spectroradiometer (MODIS) data (2000 - present) at a resolution of approximately 5 km. Known issues being addressed in the production of the CDR are: time-series bias caused by cloud cover (surface temperatures can be different under clouds vs. clear areas) and cross-calibration in the overlap period between AVHRR instruments, and between AVHRR and MODIS instruments. Because of uncertainties, mainly due to clouds, time-series of satellite IST do not necessarily correspond with actual surface temperatures. The CDR will be validated by comparing results with automatic-weather station data and with satellite-derived surface-temperature products and biases will be calculated. |
format |
Other/Unknown Material |
author |
DiGirolamo, Nicolo E. Stock, Larry V. Hall, Dorthy K. Comiso, Josefino C. Shuman, Christopher A. |
author_facet |
DiGirolamo, Nicolo E. Stock, Larry V. Hall, Dorthy K. Comiso, Josefino C. Shuman, Christopher A. |
author_sort |
DiGirolamo, Nicolo E. |
title |
Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet |
title_short |
Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet |
title_full |
Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet |
title_fullStr |
Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet |
title_full_unstemmed |
Development of a Climate-Data Record (CDR) of the Surface Temperature of the Greenland Ice Sheet |
title_sort |
development of a climate-data record (cdr) of the surface temperature of the greenland ice sheet |
publishDate |
2010 |
url |
http://hdl.handle.net/2060/20110008399 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet |
genre_facet |
Arctic Greenland Ice Sheet |
op_source |
CASI |
op_relation |
Document ID: 20110008399 http://hdl.handle.net/2060/20110008399 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766331982123368448 |