DOI: 10.1175/JCLI-D-14-00680.1
Scopus记录号: 2-s2.0-84942843891
论文题名: Quantifying the land-atmosphere coupling behavior in modern reanalysis products over the U.S. southern great plains
作者: Santanello J.A. ; Jr. ; Roundy J. ; Dirmeyer P.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 14 起始页码: 5813
结束页码: 5829
语种: 英语
Scopus关键词: Boundary layers
; Drought
; Evaporation
; Moisture
; Precipitation (meteorology)
; Soil moisture
; Atmosphere-land interactions
; Hydrometeorology
; Interannual variability
; Land-atmosphere couplings
; Planetary boundary layers
; Reanalysis
; Research and application
; Retrospective analysis
; Landforms
; annual variation
; boundary layer
; climate prediction
; drought
; evaporation
; hydrometeorology
; soil moisture
; Great Plains
英文摘要: The coupling of the land with the planetary boundary layer (PBL) on diurnal time scales is critical to regulating the strength of the connection between soil moisture and precipitation. To improve understanding of land-atmosphere (L-A) interactions, recent studies have focused on the development of diagnostics to quantify the strength and accuracy of the land-PBL coupling at the process level. In this paper, the authors apply a suite of local land-atmosphere coupling (LoCo) metrics to modern reanalysis (RA) products and observations during a 17-yr period over the U.S. southern Great Plains. Specifically, a range of diagnostics exploring the links between soil moisture, evaporation, PBL height, temperature, humidity, and precipitation is applied to the summertime monthlymean diurnal cycles of the NorthAmerican Regional Reanalysis (NARR),Modern-Era Retrospective Analysis for Research and Applications (MERRA), and Climate Forecast System Reanalysis (CFSR). Results showthatCFSRis the driest andMERRAthewettest of the threeRAs in terms of overall surface-PBLcoupling. When compared against observations, CFSR has a significant dry bias that impacts all components of the land-PBL system. CFSR and NARR are more similar in terms of PBL dynamics and response to dry and wet extremes, while MERRA is more constrained in terms of evaporation and PBL variability. Each RA has a unique land-PBL coupling that has implications for downstream impacts on the diurnal cycle of PBL evolution, clouds, convection, and precipitation as well as representation of extremes and drought. As a result, caution should be used when treating RAs as truth in terms of their water and energy cycle processes. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50437
Appears in Collections: 气候变化事实与影响
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作者单位: Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Atmospheric, Oceanic and Earth Sciences, George Mason University, Fairfax, VA, United States
Recommended Citation:
Santanello J.A.,Jr.,Roundy J.,et al. Quantifying the land-atmosphere coupling behavior in modern reanalysis products over the U.S. southern great plains[J]. Journal of Climate,2015-01-01,28(14)