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Use of Atmospheric Budget to Reduce Uncertainty in Estimated Water Availability over South Asia from Different Reanalyses

Sebastian, Dawn Emil, Pathak, Amey, and Ghosh, Subimal, 2016. Use of Atmospheric Budget to Reduce Uncertainty in Estimated Water Availability over South Asia from Different Reanalyses. Scientific Reports, 6:29664, doi:10.1038/srep29664.

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@ARTICLE{2016NatSR...629664S,
       author = {{Sebastian}, Dawn Emil and {Pathak}, Amey and {Ghosh}, Subimal},
        title = "{Use of Atmospheric Budget to Reduce Uncertainty in Estimated Water Availability over South Asia from Different Reanalyses}",
      journal = {Scientific Reports},
         year = 2016,
        month = jul,
       volume = {6},
          eid = {29664},
        pages = {29664},
     abstract = "{Disagreements across different reanalyses over South Asia result into
        uncertainty in assessment of water availability, which is
        computed as the difference between Precipitation and
        Evapotranspiration (P-E). Here, we compute P-E directly from
        atmospheric budget with divergence of moisture flux for
        different reanalyses and find improved correlation with observed
        values of P-E, acquired from station and satellite data. We also
        find reduced closure terms for water cycle computed with
        atmospheric budget, analysed over South Asian landmass, when
        compared to that obtained with individual values of P and E. The
        P-E value derived with atmospheric budget is more consistent
        with energy budget, when we use top-of-atmosphere radiation for
        the same. For analysing water cycle, we use runoff from Global
        Land Data Assimilation System, and water storage from Gravity
        Recovery and Climate Experiment. We find improvements in
        agreements across different reanalyses, in terms of inter-annual
        cross correlation when atmospheric budget is used to estimate
        P-E and hence, emphasize to use the same for estimations of
        water availability in South Asia to reduce uncertainty. Our
        results on water availability with reduced uncertainty over
        highly populated monsoon driven South Asia will be useful for
        water management and agricultural decision making.}",
          doi = {10.1038/srep29664},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016NatSR...629664S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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