i
Benefits and pitfalls of GRACE data assimilation: A case study of terrestrial water storage depletion in India
-
2017
Source: Geophysical Research Letters 44(9), 4107-4115, 2017
[PDF-3.61 MB]
Details:
-
Journal Title:Geophysical Research Letters
-
Personal Author:
-
NOAA Program & Office:
-
Description:This study investigates some of the benefits and drawbacks of assimilating terrestrial water storage (TWS) observations from the Gravity Recovery and Climate Experiment (GRACE) into a land surface model over India. GRACE observes TWS depletion associated with anthropogenic groundwater extraction in northwest India. The model, however, does not represent anthropogenic groundwater withdrawals and is not skillful in reproducing the interannual variability of groundwater. Assimilation of GRACE TWS introduces long-term trends and improves the interannual variability in groundwater. But the assimilation also introduces a negative trend in simulated evapotranspiration, whereas in reality evapotranspiration is likely enhanced by irrigation, which is also unmodeled. Moreover, in situ measurements of shallow groundwater show no trend, suggesting that the trends are erroneously introduced by the assimilation into the modeled shallow groundwater, when in reality the groundwater is depleted in deeper aquifers. The results emphasize the importance of representing anthropogenic processes in land surface modeling and data assimilation systems.
-
Keywords:
-
Source:Geophysical Research Letters 44(9), 4107-4115, 2017
-
Pubmed Central ID:PMC5889943
-
Document Type:
-
Place as Subject:
-
Rights Information:Other
-
Compliance:PMC
-
Main Document Checksum:urn:sha256:a5af549d589434587d6146f8045ff5dc38e634e0bcb68b3d65b913258d488372
-
File Type:
Supporting Files
-
No Additional Files
More +
Related Documents
-
2019 | Journal of Advances in Modeling Earth Systems 11(6), 1803-1829, 2019Description:Strongly coupled data assimilation (SCDA) views the Earth as one unified system. This allows observations to have an instantaneous impact across bound...Personal Author:Li, Dan ;Malyshev, Sergey...2016 | Journal of Advances in Modeling Earth Systems 8(2), 917-935, 2016Description:A number of recent studies investigated impacts of Land-Use and Land-Cover Changes (LULCC) on climate with global Earth System Models (ESMs). Yet many...Vertically resolved weak temperature gradient analysis of the Madden-Julian Oscillation in SP-CESMCitePersonal Author:Wolding, Brandon O. ;Maloney, Eric D....2016 | Journal of Advances in Modeling Earth Systems 8(4), 1586-1619, 2016Description:The collective effects of convection can influence large-scale circulations that, in turn, act to organize convective activity. Such scale interaction...2019 | Journal of Advances in Modeling Earth Systems 11(7), 2352-2374, 2019Description:Precipitation amount (A), frequency (F), intensity (I), and duration (D) are important properties of precipitation, but their estimates are sensitive ...2019 | Journal of Advances in Modeling Earth Systems 11(7), 1917-1939, 2019Description:Mesoscale eddies stir along the neutral plane, and the resulting neutral diffusion is a fundamental aspect of subgrid-scale tracer transport in ocean ...2017 | Journal of Advances in Modeling Earth Systems 9(1), 307-331, 2017Description:WTG balance is used to examine how changes in the moist thermodynamic structure of the tropics affect the MJO in two simulations of the Superparameter...2017 | Journal of Advances in Modeling Earth Systems 9(8), 2946-2967, 2017Description:The processes that lead to changes in the propagation and maintenance of the Madden‐Julian Oscillation (MJO) as a response to increasing CO2 are exa...2017 | Journal of Advances in Modeling Earth Systems 9(2), 932-948, 2017Description:This paper describes a new intermediate global atmosphere model in which synoptic and planetary dynamics including the advection of water vapor are ex...2017 | Journal of Advances in Modeling Earth Systems 9(2), 1251-1268, 2017Description:Changes in the Madden-Julian Oscillation (MJO) with increasing CO2 concentrations are examined using the Goddard Institute for Space Studies Global Cl...Personal Author:Li, Dan ;Malyshev, Sergey...2016 | Journal of Advances in Modeling Earth Systems 8(2), 936-953, 2016Description:Using a newly developed urban canopy model (UCM) coupled to the Geophysical Fluid Dynamics Laboratory (GFDL) land model LM3 (LM3-UCM), this study exam...2017 | Journal of Advances in Modeling Earth Systems 9(2), 781-789, 2017Description:The current NCEP operational four-dimensional ensemble-variational data assimilation system uses a control forecast at T1534 resolution coupled with a...2017 | Journal of Geophysical Research: Space Physics 122(8), 9056-9067, 2017Description:Since the mid-1970s, the Defense Meteorological Satellite Program (DMSP) spacecraft have operated instruments for monitoring the space environment fro...2017 | Journal of Advances in Modeling Earth Systems 9(8), 3045-3068, 2017Description:The quasi-geostrophic omega equation has been used extensively to examine the large-scale vertical velocity patterns of atmospheric systems. It is der...2017 | Journal of Geophysical Research: Space Physics 122(8), 9068-9079, 2017Description:We have developed a method for reprocessing the multidecadal, multispacecraft Defense Meteorological Satellite Program Special Sensor Magnetometer (DM...2016 | Journal of Advances in Modeling Earth Systems 8(4), 1969-1985, 2016Description:In this study, a one-dimensional (1-D) thermal diffusion lake model within the Weather Research and Forecasting (WRF) model was investigated for the L...Personal Author:Lei, Lili ;Anderson, Jeffrey L....2016 | Journal of Advances in Modeling Earth Systems 8(2), 719-734, 2016Description:Assimilation of satellite radiances has been proven to have positive impacts on the forecast skill, especially for regions with sparse conventional ob...2018 | Journal of Advances in Modeling Systems 10(2), 421-447, 2018Description:Detailed, regional climate projections, particularly for precipitation, are critical for many applications. Accurate precipitation downscaling in the ...2017 | Earth and Space Science 4(5), 314-334, 2017Description:While global climate models (GCMs) provide useful projections of near‐surface wind vectors into the 21st century, resolution is not sufficient enoug...2017 | GeoHealth 1(1), 37-50, 2017Description:Estuarine environments are continuously being shaped by both natural and anthropogenic sources which directly/indirectly influence the organisms that ...2017 | Journal of Advances in Modeling Earth Systems 9(2), 870-892, 2017Description:Previous modeling work showed that aerosol can affect the position of the tropical rain belt, i.e., the intertropical convergence zone (ITCZ). Yet it ...
More +
You May Also Like
Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii
Cite
2017 | Journal of Hydrology: Regional Studies 11 (147-165), 2017
Description:
Study regionThe study region encompasses the nearshore, coastal waters off west Maui, Hawaii. Here abundant groundwater—that carries with it a stron...
2020 | Hydrology 2020, 7(2), 21
Description:
With predicted alterations in climate and land use, managing water resources is of the utmost importance, especially in areas such as the United State...
Checkout today's featured content at repository.library.noaa.gov