Global Snow Cover Monitoring: An Update
Accurate monitoring of the large-scale dimensions of global snow cover is essential for understanding details of climate dynamics and climate change. Presently, such information is gathered individually from ground station networks and satellite platforms. Efforts are in progress to consolidate and...
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ftunivnebraskali:oai:digitalcommons.unl.edu:usdeptcommercepub-1023 2023-11-12T04:13:58+01:00 Global Snow Cover Monitoring: An Update Robinson, David A. Dewey, Kenneth F. Heim, Jr., Richard R. 1993-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/usdeptcommercepub/40 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1023/viewcontent/Dewet_BAMS_1993_Global_snow_cover_NOAA.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usdeptcommercepub/40 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1023/viewcontent/Dewet_BAMS_1993_Global_snow_cover_NOAA.pdf Publications, Agencies and Staff of the U.S. Department of Commerce Environmental Sciences text 1993 ftunivnebraskali 2023-10-30T09:39:10Z Accurate monitoring of the large-scale dimensions of global snow cover is essential for understanding details of climate dynamics and climate change. Presently, such information is gathered individually from ground station networks and satellite platforms. Efforts are in progress to consolidate and analyze long-term station records from a number of countries. To gain truly global coverage, however, satellite-based monitoring techniques must be employed. A 27-year record of Northern Hemisphere continental snow cover produced by the National Oceanic and Atmospheric Administration (NOAA) is the longest such environmental record available. Records of Southern Hemisphere continental cover and snow on top of Arctic sea ice have been produced by similar means for a portion of this interval. The visible imagery charting technique used to generate these data provides information on snow extent but not on snow volume. Satellite microwave analyses over Northern Hemisphere lands show some promise in this regard, however, large-scale monitoring of snow extent with microwave data remains less accurate than visible charting. This paper updates the status of global snow cover monitoring, concentrating on the weekly snow charts prepared by NOAA and discussing a new and consistent record of monthly snow cover generated from these weekly charts. The NOAA charts show a reduction of hemispheric snow cover over the past five years, particularly in spring. Snow areas from the NOAA product are then compared with values derived using passive microwave data. The latter consistently reports less snow cover than the more accurate visible product. Finally, future snow monitoring initiatives are recommended. These include continuing the consistent NOAA product until an all-weather all-surface product is developed. The latter would use multiple data sources and geographic information systems techniques. Such an integrative product would need extensive comparisons with the NOAA product to ensure the continued utility of the lengthy NOAA ... Text Arctic Climate change Sea ice University of Nebraska-Lincoln: DigitalCommons@UNL Arctic |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
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Environmental Sciences |
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Environmental Sciences Robinson, David A. Dewey, Kenneth F. Heim, Jr., Richard R. Global Snow Cover Monitoring: An Update |
topic_facet |
Environmental Sciences |
description |
Accurate monitoring of the large-scale dimensions of global snow cover is essential for understanding details of climate dynamics and climate change. Presently, such information is gathered individually from ground station networks and satellite platforms. Efforts are in progress to consolidate and analyze long-term station records from a number of countries. To gain truly global coverage, however, satellite-based monitoring techniques must be employed. A 27-year record of Northern Hemisphere continental snow cover produced by the National Oceanic and Atmospheric Administration (NOAA) is the longest such environmental record available. Records of Southern Hemisphere continental cover and snow on top of Arctic sea ice have been produced by similar means for a portion of this interval. The visible imagery charting technique used to generate these data provides information on snow extent but not on snow volume. Satellite microwave analyses over Northern Hemisphere lands show some promise in this regard, however, large-scale monitoring of snow extent with microwave data remains less accurate than visible charting. This paper updates the status of global snow cover monitoring, concentrating on the weekly snow charts prepared by NOAA and discussing a new and consistent record of monthly snow cover generated from these weekly charts. The NOAA charts show a reduction of hemispheric snow cover over the past five years, particularly in spring. Snow areas from the NOAA product are then compared with values derived using passive microwave data. The latter consistently reports less snow cover than the more accurate visible product. Finally, future snow monitoring initiatives are recommended. These include continuing the consistent NOAA product until an all-weather all-surface product is developed. The latter would use multiple data sources and geographic information systems techniques. Such an integrative product would need extensive comparisons with the NOAA product to ensure the continued utility of the lengthy NOAA ... |
format |
Text |
author |
Robinson, David A. Dewey, Kenneth F. Heim, Jr., Richard R. |
author_facet |
Robinson, David A. Dewey, Kenneth F. Heim, Jr., Richard R. |
author_sort |
Robinson, David A. |
title |
Global Snow Cover Monitoring: An Update |
title_short |
Global Snow Cover Monitoring: An Update |
title_full |
Global Snow Cover Monitoring: An Update |
title_fullStr |
Global Snow Cover Monitoring: An Update |
title_full_unstemmed |
Global Snow Cover Monitoring: An Update |
title_sort |
global snow cover monitoring: an update |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
1993 |
url |
https://digitalcommons.unl.edu/usdeptcommercepub/40 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1023/viewcontent/Dewet_BAMS_1993_Global_snow_cover_NOAA.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Sea ice |
genre_facet |
Arctic Climate change Sea ice |
op_source |
Publications, Agencies and Staff of the U.S. Department of Commerce |
op_relation |
https://digitalcommons.unl.edu/usdeptcommercepub/40 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1023/viewcontent/Dewet_BAMS_1993_Global_snow_cover_NOAA.pdf |
_version_ |
1782331736777031680 |