Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0720.1 |
Assessment of MERRA-2 Land Surface Hydrology Estimates | |
Reichle, Rolf H.1; Draper, Clara S.1,2; Liu, Q.1,3; Girotto, Manuela1,2; Mahanama, Sarith P. P.1,3; Koster, Randal D.1; De Lannoy, Gabrielle J. M.4 | |
2017-04-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Belgium |
英文摘要 | The MERRA-2 atmospheric reanalysis product provides global, 1-hourly estimates of land surface conditions for 1980-present at similar to 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-L and 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). |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399679900013 |
WOS关键词 | CLIMATE REFERENCE NETWORK ; SOIL-MOISTURE ; REANALYSIS DATA ; UNITED-STATES ; MODEL ; SATELLITE ; PRECIPITATION ; PERFORMANCE ; GAUGE ; SNOW |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21107 |
专题 | 气候变化 |
作者单位 | 1.NASA, Global Modeling & Assimilat Off, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; 2.Univ Space Res Assoc, GESTAR, Columbia, MD USA; 3.Sci Syst & Applicat, Lanham, MD USA; 4.Katholieke Univ Leuven, Dept Earth & Environm Sci, Heverlee, Belgium |
推荐引用方式 GB/T 7714 | Reichle, Rolf H.,Draper, Clara S.,Liu, Q.,et al. Assessment of MERRA-2 Land Surface Hydrology Estimates[J]. JOURNAL OF CLIMATE,2017,30(8). |
APA | Reichle, Rolf H..,Draper, Clara S..,Liu, Q..,Girotto, Manuela.,Mahanama, Sarith P. P..,...&De Lannoy, Gabrielle J. M..(2017).Assessment of MERRA-2 Land Surface Hydrology Estimates.JOURNAL OF CLIMATE,30(8). |
MLA | Reichle, Rolf H.,et al."Assessment of MERRA-2 Land Surface Hydrology Estimates".JOURNAL OF CLIMATE 30.8(2017). |
条目包含的文件 | 条目无相关文件。 |
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