F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys
Abstract. The melt extent, duration and melt season on the Greenland ice sheet were estimated using an edge detection technique on passive microwave data from the SSM/I and SMMR instruments (18/19V GHz channel) for the period 1979 to 1997. The annual brightness temperature (Tb) time series at a pixe...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.4970 http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.1046.4970 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.1046.4970 2023-05-15T16:27:26+02:00 F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys Maneesha Joshi Carolyn J Merry Kenneth C Jezek John F Bolzan The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.4970 http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.4970 http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf text ftciteseerx 2020-04-05T00:19:38Z Abstract. The melt extent, duration and melt season on the Greenland ice sheet were estimated using an edge detection technique on passive microwave data from the SSM/I and SMMR instruments (18/19V GHz channel) for the period 1979 to 1997. The annual brightness temperature (Tb) time series at a pixel location that experiences summer melt has a steep rise and drop in Tb with the onset and end of melt, respectively. A derivative-of-Gaussian edge detector is used to detect edges corresponding to the onset and end of melt. The time lapsed between the first upward and last downward edge on the annual Tb time series gives an estimate of the melt season and the time lapsed between successive upward and downward edges gives the duration of melt. While the maximum melt extent increased by 18%, the total duration of melt increased by 3.7% and the total melt season decreased by 3.8% during the period 1979-1997. Text Greenland Ice Sheet Unknown Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract. The melt extent, duration and melt season on the Greenland ice sheet were estimated using an edge detection technique on passive microwave data from the SSM/I and SMMR instruments (18/19V GHz channel) for the period 1979 to 1997. The annual brightness temperature (Tb) time series at a pixel location that experiences summer melt has a steep rise and drop in Tb with the onset and end of melt, respectively. A derivative-of-Gaussian edge detector is used to detect edges corresponding to the onset and end of melt. The time lapsed between the first upward and last downward edge on the annual Tb time series gives an estimate of the melt season and the time lapsed between successive upward and downward edges gives the duration of melt. While the maximum melt extent increased by 18%, the total duration of melt increased by 3.7% and the total melt season decreased by 3.8% during the period 1979-1997. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Maneesha Joshi Carolyn J Merry Kenneth C Jezek John F Bolzan |
spellingShingle |
Maneesha Joshi Carolyn J Merry Kenneth C Jezek John F Bolzan F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys |
author_facet |
Maneesha Joshi Carolyn J Merry Kenneth C Jezek John F Bolzan |
author_sort |
Maneesha Joshi |
title |
F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys |
title_short |
F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys |
title_full |
F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys |
title_fullStr |
F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys |
title_full_unstemmed |
F.: An edge detection technique to estimate melt duration, season and melt extent on the Greenland ice sheet using passive microwave data, Geophys |
title_sort |
f.: an edge detection technique to estimate melt duration, season and melt extent on the greenland ice sheet using passive microwave data, geophys |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.4970 http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.4970 http://research.bpcrc.osu.edu/rsl/greenland_data/melt_data/published/Joshi_Merry_Jezek_Bolzan_2001.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766016610793947136 |