Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China
The Gravity Recovery and Climate Experiment (GRACE) satellite mission provides measurements of Earth’s static and time-variable gravity fields with monthly resolution. In this study, changes of water storage in northwestern China were determined by GRACE monthly gravity field data obtained from 2003...
Published in: | Advances in Meteorology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Advances in Meteorology
2015
|
Subjects: | |
Online Access: | https://doi.org/10.1155/2015/681634 |
id |
fthindawi:oai:hindawi.com:10.1155/2015/681634 |
---|---|
record_format |
openpolar |
spelling |
fthindawi:oai:hindawi.com:10.1155/2015/681634 2023-05-15T17:57:46+02:00 Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China Min Xu Shichang Kang Jiazhen Li 2015 https://doi.org/10.1155/2015/681634 en eng Advances in Meteorology https://doi.org/10.1155/2015/681634 Copyright © 2015 Min Xu et al. Research Article 2015 fthindawi https://doi.org/10.1155/2015/681634 2019-05-26T07:09:33Z The Gravity Recovery and Climate Experiment (GRACE) satellite mission provides measurements of Earth’s static and time-variable gravity fields with monthly resolution. In this study, changes of water storage in northwestern China were determined by GRACE monthly gravity field data obtained from 2003 to 2010. Comparisons of water storage change (WSC) simulated by a four-dimensional assimilation model (Noah) and observed by GRACE revealed similar patterns of change and a correlation coefficient of 0.71 (P<0.05). Trend analysis indicated significant changes in the spatiotemporal variation of WSC in northwestern China during the 8-year study period, which were stronger in the east than in the west and more pronounced in the south than in the north. The most pronounced increase in water storage occurred in Gansu and Qinghai provinces, but, overall, water storage increased by 0.61 mm/a over northwestern China during the study period. Clear seasonal variations of WSC and precipitation were found, because glacial meltwater and precipitation are the main sources of water in the hydrosphere; meanwhile, the distributions of glaciers and permafrost also affect the spatial distribution of WSC. Article in Journal/Newspaper permafrost Hindawi Publishing Corporation Advances in Meteorology 2015 1 12 |
institution |
Open Polar |
collection |
Hindawi Publishing Corporation |
op_collection_id |
fthindawi |
language |
English |
description |
The Gravity Recovery and Climate Experiment (GRACE) satellite mission provides measurements of Earth’s static and time-variable gravity fields with monthly resolution. In this study, changes of water storage in northwestern China were determined by GRACE monthly gravity field data obtained from 2003 to 2010. Comparisons of water storage change (WSC) simulated by a four-dimensional assimilation model (Noah) and observed by GRACE revealed similar patterns of change and a correlation coefficient of 0.71 (P<0.05). Trend analysis indicated significant changes in the spatiotemporal variation of WSC in northwestern China during the 8-year study period, which were stronger in the east than in the west and more pronounced in the south than in the north. The most pronounced increase in water storage occurred in Gansu and Qinghai provinces, but, overall, water storage increased by 0.61 mm/a over northwestern China during the study period. Clear seasonal variations of WSC and precipitation were found, because glacial meltwater and precipitation are the main sources of water in the hydrosphere; meanwhile, the distributions of glaciers and permafrost also affect the spatial distribution of WSC. |
format |
Article in Journal/Newspaper |
author |
Min Xu Shichang Kang Jiazhen Li |
spellingShingle |
Min Xu Shichang Kang Jiazhen Li Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China |
author_facet |
Min Xu Shichang Kang Jiazhen Li |
author_sort |
Min Xu |
title |
Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China |
title_short |
Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China |
title_full |
Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China |
title_fullStr |
Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China |
title_full_unstemmed |
Evaluation of Water Storage Change of Inland Cryosphere in Northwestern China |
title_sort |
evaluation of water storage change of inland cryosphere in northwestern china |
publisher |
Advances in Meteorology |
publishDate |
2015 |
url |
https://doi.org/10.1155/2015/681634 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://doi.org/10.1155/2015/681634 |
op_rights |
Copyright © 2015 Min Xu et al. |
op_doi |
https://doi.org/10.1155/2015/681634 |
container_title |
Advances in Meteorology |
container_volume |
2015 |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1766166270469734400 |