Evaluation of ERA-40, NCEP-1, and NCEP-2 reanalysis air temperatures with ground-based measurements in China
文献类型：期刊论文
| 作者 | Ma, Lijuan1; Zhang, Tingjun2; Li, Qingxiang3; Frauenfeld, Oliver W.2; Qin, Dahe4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2008-08-08 |
| 卷号 | 113期号:D15页码:15 |
| ISSN号 | 2169-897X |
| DOI | 10.1029/2007JD009549 |
| 通讯作者 | Ma, Lijuan() |
| 英文摘要 | We assess the correspondence of reanalysis air temperatures from ERA-40, NCEP-1, and NCEP-2 with homogenized observational data from China for 1979-2001 and 1979 2001. Results indicate that climatologies for annual ERA-40, NCEP-1, and NCEP-2 air temperatures are lower than observations by -0.93 degrees C, -2.78 degrees C, and -2.27 degrees C, respectively. Large negative differences for most of western China primarily contribute to this cool bias. Error analysis indicates that the internal coherence of ERA-40 data is better than NCEP-1 or NCEP-2. Although NCEP-2 air temperatures represent an improvement over NCEP-1, biases of NCEP-1 and NCEP-2 data relative to observations are still much larger than for ERA-40. Areas with positive/negative air temperature differences (dT) between reanalysis and observational data correspond to negative/positive elevation differences (dH). The high correlation coefficients of -0.94, -0.88, and -0.85 between d T and dH for ERA-40, NCEP-1, NCEP-2, and observations, respectively, illustrate that the air temperature differences between reanalysis data and observations are primarily related to elevation differences. Furthermore, a spatial and temporal comparison of trends also indicates that ERA-40 temperature changes correspond most closely to observed trends in China. In general, our comprehensive analysis of the three global reanalysis products indicates that, both on a seasonal and annual basis, ERA-40 temperatures correspond most closely to observations, and biases are due mainly to the elevation differences. |
| 收录类别 | SCI |
| WOS关键词 | TIBETAN PLATEAU ; CLIMATE-CHANGE ; TRENDS ; NCAR ; PRECIPITATION ; DOE |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000258339100003 |
| 出版者 | AMER GEOPHYSICAL UNION |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556088 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ma, Lijuan |
| 作者单位 | 1.Chinese Acad Meteorol Sci, Inst Climate & Environm, Beijing 100081, Peoples R China 2.Univ Colorado, Cooperat Inst Res Environm Sci, Natl Snow & Ice Data Ctr, Boulder, CO 80309 USA 3.China Meteorol Adm, Natl Meteorol Informat Ctr, Beijing 100081, Peoples R China 4.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Regions Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Lijuan,Zhang, Tingjun,Li, Qingxiang,et al. Evaluation of ERA-40, NCEP-1, and NCEP-2 reanalysis air temperatures with ground-based measurements in China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2008,113(D15):15. |
| APA | Ma, Lijuan,Zhang, Tingjun,Li, Qingxiang,Frauenfeld, Oliver W.,&Qin, Dahe.(2008).Evaluation of ERA-40, NCEP-1, and NCEP-2 reanalysis air temperatures with ground-based measurements in China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,113(D15),15. |
| MLA | Ma, Lijuan,et al."Evaluation of ERA-40, NCEP-1, and NCEP-2 reanalysis air temperatures with ground-based measurements in China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 113.D15(2008):15. |
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来源：寒区旱区环境与工程研究所
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