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Wednesday, September 30, 2009

V.M. Tiwari, J. Wahr, S. Swensen, GRL 2009: Dwindling groundwater resources in northern India, from satellite gravity observations

Geophysical Research Letters, 36 (2009) L18401; doi: 10.1029/2009GL039401.

Dwindling groundwater resources in northern India, from satellite gravity observations

V. M. Tiwari (National Geophysical Research Institute, CSIR, Hyderabad, India; Department of Physics, University of Colorado, Boulder, CO, U.S.A.), J. Wahr (Department of Physics and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, U.S.A.), and S. Swenson (Advanced Study Program, National Center for Atmospheric Research, Boulder, CO, U.S.A.)

Received 2 June 2009; accepted 28 July 2009; published 17 September 2009

Abstract

Northern India and its surroundings, home to roughly 600 million people, is probably the most heavily irrigated region in the world. Temporal changes in Earth's gravity field in this region as recorded by the GRACE satellite mission, reveal a steady, large-scale mass loss that we attribute to excessive extraction of groundwater. Combining the GRACE data with hydrological models to remove natural variability, we conclude the region lost groundwater at a rate of 54 ± 9 km3/yr between April, 2002 (the start of the GRACE mission) and June, 2008. This is probably the largest rate of groundwater loss in any comparable-sized region on Earth. Its likely contribution to sea level rise is roughly equivalent to that from melting Alaskan glaciers. This trend, if sustained, will lead to a major water crisis in this region when this non-renewable resource is exhausted.

Tiwari, V. M., J. Wahr, & S. Swenson (2009), Dwindling groundwater resources in northern India, from satellite gravity observations, Geophys. Res. Lett., 36, L18401; doi: 10.1029/2009GL039401.

5 comments:

Satyasiba said...

Please I Need a copy of this article. I am a researcher from India working on Climate change, Agriculture and Livelihood

email:
bedamatta@gmail.com

Tenney Naumer said...

The webpage of the abstract does not show the corresponding author or address.

Perhaps it would be best to try to locate the author from India, via a google search:

V. M. Tiwari (National Geophysical Research Institute, CSIR, Hyderabad, India)

I am very sorry that I cannot be of more assistance.

Good luck!

Tenney

Satyasiba said...

Thanks Tenney.....great-full to you for the information

Thanking you

Tenney Naumer said...

You are most welcome!

Please let me know when you have work published -- I might like to post it here.

With kind regards,

Tenney

Satyasiba said...

Oh yes.... But I have some publication on Ecology-Economics-institutions and livelihood interface. am very happy that this year Nobel Prize in economics gone to Ostrom (who has been working the same research issues).
Apart from this I have some publication on Factor determining the sustainability of Village level Institutions promoted by NGO. Here I took social forestry as an issues

my mail ID is
bedamatta@gmail.com