NDLI: Gravity Recovery and Climate Experiment (GRACE) Derived Water Equivalent Changes of the Arctic Watersheds

Please wait, while we are loading the content...

Gravity Recovery and Climate Experiment (GRACE) Derived Water Equivalent Changes of the Arctic Watersheds

Content Provider	Semantic Scholar
Author	Muskett, Reginald R. Romanovsky, Vladimir E.
Copyright Year	2010
Abstract	The Arctic permafrost regions compose the largest component of the cryosphere. Observations from the Gravity Recovery and Climate Experiment (GRACE) mission offer to provide a greater understanding of changes in water mass within these regions. We investigate GRACE monthly time series, snow water equivalent from the Special Scanning Microwave Imager (SSM/I), and discharge from the Lena, Yenisei, Ob', Mackenzie and Yukon River watersheds. GRACE water equivalent mass change respond to mass loading by snow accumulation in winter and mass unloading by runoff in spring. Comparison of secular trends from GRACE to runoff indicates groundwater storage is increasing in the Lena and Yenisei watersheds, decreasing in the Mackenzie and Yukon watersheds, and is steady in the Ob' watershed. We also note that groundwater storage is increasing in the Alaska Arctic coastal plain. We hypothesize that the groundwater storage changes are linked to the development of closed talik (unfrozen material acting as aquifers) in the continuous permafrost zone and decrease of permafrost lateral extent and new open talik formation in the discontinuous permafrost zone of the watersheds. The increase in talik may be linked to increase in surface and sub-surface water associated with thaw bogs, ponds, lakes and river-beds in the continuous permafrost zone and decrease in surface and sub-surface water associated with draining of thaw bogs, ponds and lakes in the discontinuous permafrost zone. ABSTRACT GRACE Water Equivalent Mass Changes
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://research.iarc.uaf.edu/IRG/GRACE/posters/Poster_C51C-0493_agu_09.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in