CLIMATE-CHANGE
; SUMMER RAINFALL
; ENERGY-BALANCE
; WIND-SPEED
; MODEL
; SATELLITE
; TRENDS
; IMPACT
; WATER
; EVAPOTRANSPIRATION
WOS学科分类:
Meteorology & Atmospheric Sciences
WOS研究方向:
Meteorology & Atmospheric Sciences
英文摘要:
Surface sensible and latent heat fluxes (SH and LE) over the Tibetan Plateau (TP) have been under research since 1950s, especially for recent several years, by mainly using observation, reanalysis, and satellite data. However, the spatiotemporal changes are not consistent among different studies. This paper focuses on the spatiotemporal variation of SH and LE over the TP from 1981 to 2013 using reanalysis data sets (ERA-Interim, JRA-55, and MERRA) and observations. Results show that the spatiotemporal changes from the three reanalysis data sets are significantly different and the probable causes are discussed. Averaged for the whole TP, both SH and LE from MERRA are obviously higher than the other two reanalysis data sets. ERA-Interim shows a significant downward trend for SH and JRA-55 shows a significant increase of LE during the 33 years with other data sets having no obvious changes. By comparing the heat fluxes and some climate factors from the reanalysis with observations, it is found that the differences of heat fluxes among the three reanalysis data sets are closely related to their differences in meteorological conditions as well as the different parameterizations for surface transfer coefficients. In general, the heat fluxes from the three reanalysis have a better representation in the western TP than that in the eastern TP under inter-annual scale. While in terms of monthly variation, ERA-Interim may have better applicability in the eastern TP with dense vegetation conditions, while SH of JRA-55 and LE of MERRA are probably more representative for the middle and western TP with poor vegetation conditions.
1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Pingliang Land Surface Proc & Severe Weather Res, Pingliang 744015, Gansu, Peoples R China 4.Nanjing Univ, Inst Climate & Global Change Res, Sch Atmospher Sci, Nanjing 210093, Jiangsu, Peoples R China 5.Chongqing Meteorol Adm, Chongqing 401147, Peoples R China
Recommended Citation:
Xie, Jin,Yu, Ye,Li, Jiang-lin,et al. Comparison of surface sensible and latent heat fluxes over the Tibetan Plateau from reanalysis and observations[J]. METEOROLOGY AND ATMOSPHERIC PHYSICS,2019-01-01,131(3):567-584