Estimating the Loss of Himalayan Glaciers under Global Warming Using the δ18O–Salinity Relation in the Bay of Bengal | Zendy

Arvind Singh | Zendy; A. Mohiuddin | Zendy; R. Ramesh | Zendy; Sanjeev Raghav | Zendy

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Estimating the Loss of Himalayan Glaciers under Global Warming Using the δ¹⁸O–Salinity Relation in the Bay of Bengal

Author(s) -

Arvind Singh,

A. Mohiuddin,

R. Ramesh,

Sanjeev Raghav

Publication year - 2014

Publication title -

environmental science and technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.497

H-Index - 58

ISSN - 2328-8930

DOI - 10.1021/ez500076z

Subject(s) - bay , glacier , bengal , salinity , δ18o , structural basin , period (music) , global warming , geology , oceanography , climate change , climatology , physical geography , sea level , environmental science , hydrology (agriculture) , stable isotope ratio , geography , geomorphology , physics , geotechnical engineering , quantum mechanics , acoustics

Quantifying the water loss of Himalayan glaciers due to global warming from direct measurement is difficult, as some glaciers are advancing or stable in spite of an overall retreat. We use a novel approach to provide an alternative estimate of the amount of Himalayan ice melt. Because a major part of this melted ice debouches into the Bay of Bengal through the Ganga–Brahmaputra basin, it causes significant variations in the oxygen isotopic composition (δ18O) and salinity (S) of the sea surface water and their mutual linear relationship. We document the temporal change in the δ18O–S relation for the bay at three different times during the period from 1994 to 2006, and using a model, we infer that 2.4 × 1011 m3 water was lost by melting from the Ganga–Brahmaputra basin during this period

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