Thu Aug 14, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Reichle, Rolf H., Draper, Clara S., Liu, Q., Girotto, Manuela, Mahanama, Sarith P. P., Koster, Randal D., and De Lannoy, Gabrielle J. M., 2017. Assessment of MERRA-2 Land Surface Hydrology Estimates. Journal of Climate, 30(8):2937–2960, doi:10.1175/JCLI-D-16-0720.1.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2017JCli...30.2937R,
author = {{Reichle}, Rolf H. and {Draper}, Clara S. and {Liu}, Q. and {Girotto}, Manuela and {Mahanama}, Sarith P.~P. and {Koster}, Randal D. and {De Lannoy}, Gabrielle J.~M.},
title = "{Assessment of MERRA-2 Land Surface Hydrology Estimates}",
journal = {Journal of Climate},
year = 2017,
month = apr,
volume = {30},
number = {8},
pages = {2937-2960},
abstract = "{The MERRA-2 atmospheric reanalysis product provides global, 1-hourly
estimates of land surface conditions for 1980-present at 50-km
resolution. MERRA-2 uses observations-based precipitation to
force the land (unlike its predecessor, MERRA). This paper
evaluates MERRA-2 and MERRA land hydrology estimates, along with
those of the land-only MERRA-Land and ERA-Interim/Land products,
which also use observations-based precipitation. Overall,
MERRA-2 land hydrology estimates are better than those of MERRA-
Land and MERRA. A comparison against GRACE satellite
observations of terrestrial water storage demonstrates clear
improvements in MERRA-2 over MERRA in South America and Africa
but also reflects known errors in the observations used to
correct the MERRA-2 precipitation. Validation against in situ
measurements from 220-320 stations in North America, Europe, and
Australia shows that MERRA-2 and MERRA-Land have the highest
surface and root zone soil moisture skill, slightly higher than
that of ERA-Interim/Land and higher than that of MERRA
(significantly for surface soil moisture). Snow amounts from
MERRA-2 have lower bias and correlate better against reference
data from the Canadian Meteorological Centre than do those of
MERRA-Land and MERRA, with MERRA-2 skill roughly matching that
of ERA-Interim/Land. Validation with MODIS satellite
observations shows that MERRA-2 has a lower snow cover
probability of detection and probability of false detection than
MERRA, owing partly to MERRA-2's lower midwinter, midlatitude
snow amounts and partly to MERRA-2's revised snow depletion
curve parameter compared to MERRA. Finally, seasonal anomaly R
values against naturalized streamflow measurements in the United
States are, on balance, highest for MERRA-2 and ERA-
Interim/Land, somewhat lower for MERRA-Land, and lower still for
MERRA (significantly in four basins).}",
doi = {10.1175/JCLI-D-16-0720.1},
adsurl = {https://ui.adsabs.harvard.edu/abs/2017JCli...30.2937R},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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