Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015
A new automated method enabling consistent satellite assessment of seasonal lake ice phenology at 5 km resolution was developed for all lake pixels (water coverage ≥ 90 %) in the Northern Hemisphere using 36.5 GHz H-polarized brightness temperature ( T b ) observations from the Advanced Microwave Sc...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2017
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-11-47-2017 https://doaj.org/article/3ea491b00eec4541b133a0b85619975f |
id |
ftdoajarticles:oai:doaj.org/article:3ea491b00eec4541b133a0b85619975f |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3ea491b00eec4541b133a0b85619975f 2023-05-15T18:32:31+02:00 Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 J. Du J. S. Kimball C. Duguay Y. Kim J. D. Watts 2017-01-01T00:00:00Z https://doi.org/10.5194/tc-11-47-2017 https://doaj.org/article/3ea491b00eec4541b133a0b85619975f EN eng Copernicus Publications http://www.the-cryosphere.net/11/47/2017/tc-11-47-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-11-47-2017 https://doaj.org/article/3ea491b00eec4541b133a0b85619975f The Cryosphere, Vol 11, Iss 1, Pp 47-63 (2017) Environmental sciences GE1-350 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/tc-11-47-2017 2022-12-31T03:11:06Z A new automated method enabling consistent satellite assessment of seasonal lake ice phenology at 5 km resolution was developed for all lake pixels (water coverage ≥ 90 %) in the Northern Hemisphere using 36.5 GHz H-polarized brightness temperature ( T b ) observations from the Advanced Microwave Scanning Radiometer for EOS and Advanced Microwave Scanning Radiometer 2 (AMSR-E/2) sensors. The lake phenology metrics include seasonal timing and duration of annual ice cover. A moving t test (MTT) algorithm allows for automated lake ice retrievals with daily temporal fidelity and 5 km resolution gridding. The resulting ice phenology record shows strong agreement with available ground-based observations from the Global Lake and River Ice Phenology Database (95.4 % temporal agreement) and favorable correlations ( R ) with alternative ice phenology records from the Interactive Multisensor Snow and Ice Mapping System ( R = 0.84 for water clear of ice (WCI) dates; R = 0.41 for complete freeze over (CFO) dates) and Canadian Ice Service ( R = 0.86 for WCI dates; R = 0.69 for CFO dates). Analysis of the resulting 12-year (2002–2015) AMSR-E/2 ice record indicates increasingly shorter ice cover duration for 43 out of 71 (60.6 %) Northern Hemisphere lakes examined, with significant ( p < 0.05) regional trends toward earlier ice melting for only five lakes. Higher-latitude lakes reveal more widespread and larger trends toward shorter ice cover duration than lower-latitude lakes, consistent with enhanced polar warming. This study documents a new satellite-based approach for rapid assessment and regional monitoring of seasonal ice cover changes over large lakes, with resulting accuracy suitable for global change studies. Article in Journal/Newspaper The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 11 1 47 63 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 J. Du J. S. Kimball C. Duguay Y. Kim J. D. Watts Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
A new automated method enabling consistent satellite assessment of seasonal lake ice phenology at 5 km resolution was developed for all lake pixels (water coverage ≥ 90 %) in the Northern Hemisphere using 36.5 GHz H-polarized brightness temperature ( T b ) observations from the Advanced Microwave Scanning Radiometer for EOS and Advanced Microwave Scanning Radiometer 2 (AMSR-E/2) sensors. The lake phenology metrics include seasonal timing and duration of annual ice cover. A moving t test (MTT) algorithm allows for automated lake ice retrievals with daily temporal fidelity and 5 km resolution gridding. The resulting ice phenology record shows strong agreement with available ground-based observations from the Global Lake and River Ice Phenology Database (95.4 % temporal agreement) and favorable correlations ( R ) with alternative ice phenology records from the Interactive Multisensor Snow and Ice Mapping System ( R = 0.84 for water clear of ice (WCI) dates; R = 0.41 for complete freeze over (CFO) dates) and Canadian Ice Service ( R = 0.86 for WCI dates; R = 0.69 for CFO dates). Analysis of the resulting 12-year (2002–2015) AMSR-E/2 ice record indicates increasingly shorter ice cover duration for 43 out of 71 (60.6 %) Northern Hemisphere lakes examined, with significant ( p < 0.05) regional trends toward earlier ice melting for only five lakes. Higher-latitude lakes reveal more widespread and larger trends toward shorter ice cover duration than lower-latitude lakes, consistent with enhanced polar warming. This study documents a new satellite-based approach for rapid assessment and regional monitoring of seasonal ice cover changes over large lakes, with resulting accuracy suitable for global change studies. |
format |
Article in Journal/Newspaper |
author |
J. Du J. S. Kimball C. Duguay Y. Kim J. D. Watts |
author_facet |
J. Du J. S. Kimball C. Duguay Y. Kim J. D. Watts |
author_sort |
J. Du |
title |
Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 |
title_short |
Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 |
title_full |
Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 |
title_fullStr |
Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 |
title_full_unstemmed |
Satellite microwave assessment of Northern Hemisphere lake ice phenology from 2002 to 2015 |
title_sort |
satellite microwave assessment of northern hemisphere lake ice phenology from 2002 to 2015 |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-47-2017 https://doaj.org/article/3ea491b00eec4541b133a0b85619975f |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 11, Iss 1, Pp 47-63 (2017) |
op_relation |
http://www.the-cryosphere.net/11/47/2017/tc-11-47-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-11-47-2017 https://doaj.org/article/3ea491b00eec4541b133a0b85619975f |
op_doi |
https://doi.org/10.5194/tc-11-47-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
1 |
container_start_page |
47 |
op_container_end_page |
63 |
_version_ |
1766216634439041024 |