Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements
Recent studies have indicated that Antarctic snowmelt is increasing at a staggering rate, contributing to dramatic sea-level rise, upwards of 60m, if current trends continue indefinitely. Unfortunately, we are not able to quantify snowmelt accurately from ground-based methods because there is sparse...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.596.1737 2023-05-15T13:58:49+02:00 Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements C. C. Karmosky D. J. Lampkin The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.1737 http://www.easternsnow.org/proceedings/2008/karmosky_lampkin.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.1737 http://www.easternsnow.org/proceedings/2008/karmosky_lampkin.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.easternsnow.org/proceedings/2008/karmosky_lampkin.pdf Antarctica ice shelves remote sensing snowmelt climatology cryosphere text ftciteseerx 2016-01-08T13:44:37Z Recent studies have indicated that Antarctic snowmelt is increasing at a staggering rate, contributing to dramatic sea-level rise, upwards of 60m, if current trends continue indefinitely. Unfortunately, we are not able to quantify snowmelt accurately from ground-based methods because there is sparse coverage in automatic weather stations. Satellite based assessments of melt from passive microwave systems are limited in that they only provide an indication of melt occurrence. Though this is useful in tracking the duration of melt, melt amount of magnitude is still unknown. Coupled optical/thermal surface measurements from MODIS were calibrated by estimates of liquid water fraction (LWF) in the upper 3cm of the firn using a one-dimensional thermal snowmelt model (SNTHERM). SNTHERM was forced by hourly meteorological data from automatic weather station data at reference sites spanning a range of melt conditions across the Ross Ice Shelf. Melt intensities or LWF were derived for satellite composite periods covering the Antarctic summer months. This empirical retrieval model allows determination of melt magnitude over other Antarctic Ice Shelves, such as Larsen, where surface melt has been well documented in contributing to the disintegration of the ice shelf. Text Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Ross Ice Shelf Unknown Antarctic The Antarctic Ross Ice Shelf |
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English |
topic |
Antarctica ice shelves remote sensing snowmelt climatology cryosphere |
spellingShingle |
Antarctica ice shelves remote sensing snowmelt climatology cryosphere C. C. Karmosky D. J. Lampkin Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements |
topic_facet |
Antarctica ice shelves remote sensing snowmelt climatology cryosphere |
description |
Recent studies have indicated that Antarctic snowmelt is increasing at a staggering rate, contributing to dramatic sea-level rise, upwards of 60m, if current trends continue indefinitely. Unfortunately, we are not able to quantify snowmelt accurately from ground-based methods because there is sparse coverage in automatic weather stations. Satellite based assessments of melt from passive microwave systems are limited in that they only provide an indication of melt occurrence. Though this is useful in tracking the duration of melt, melt amount of magnitude is still unknown. Coupled optical/thermal surface measurements from MODIS were calibrated by estimates of liquid water fraction (LWF) in the upper 3cm of the firn using a one-dimensional thermal snowmelt model (SNTHERM). SNTHERM was forced by hourly meteorological data from automatic weather station data at reference sites spanning a range of melt conditions across the Ross Ice Shelf. Melt intensities or LWF were derived for satellite composite periods covering the Antarctic summer months. This empirical retrieval model allows determination of melt magnitude over other Antarctic Ice Shelves, such as Larsen, where surface melt has been well documented in contributing to the disintegration of the ice shelf. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
C. C. Karmosky D. J. Lampkin |
author_facet |
C. C. Karmosky D. J. Lampkin |
author_sort |
C. C. Karmosky |
title |
Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements |
title_short |
Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements |
title_full |
Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements |
title_fullStr |
Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements |
title_full_unstemmed |
Retrieval of Surface Melt Magnitude over Ross Ice Shelf, Antarctica Using Coupled Optical and Thermal Satellite Measurements |
title_sort |
retrieval of surface melt magnitude over ross ice shelf, antarctica using coupled optical and thermal satellite measurements |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.1737 http://www.easternsnow.org/proceedings/2008/karmosky_lampkin.pdf |
geographic |
Antarctic The Antarctic Ross Ice Shelf |
geographic_facet |
Antarctic The Antarctic Ross Ice Shelf |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
op_source |
http://www.easternsnow.org/proceedings/2008/karmosky_lampkin.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.1737 http://www.easternsnow.org/proceedings/2008/karmosky_lampkin.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766267179114692608 |