DOI: 10.1007/s00382-012-1338-8
Scopus记录号: 2-s2.0-84871925166
论文题名: Spurious shifts in the pattern of diurnal variation of sea level pressure of reanalysis datasets
作者: Sugahara S. ; da Rocha R.P. ; Ynoue R.Y. ; da Silveira R.B.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 40, 期: 2017-01-02 起始页码: 175
结束页码: 186
语种: 英语
英文关键词: Diurnal variation of sea level pressure
; ECMWF ERA-40
; NCEP/DOE reanalysis 2
; NCEP/NCAR reanalysis 1
; Observation systems
; Spurious shifts
英文摘要: The main purpose of this work is to report the presence of spurious discontinuities in the pattern of diurnal variation of sea level pressure of the three reanalysis datasets from: the National Centers for Environmental Prediction (NCEP) and National Center for Atmospheric Science (R1), the NCEP and Department of Energy (R2), and the European Centre for Medium Range Weather Forecasting (ERA-40). Such discontinuities can be connected to the major changes in the global observing system that have occurred throughout reanalyses years. In the R1, the richest period in discontinuities is 1956-1958, coinciding with the start of modern radiosonde observation network. Rapid increase in the density of surface-based observations from 1967 also had an important impact on both R1 and ERA-40, with larger impact on R1. The reanalyses show discontinuities in the 1970s related to the assimilation of radiances measured by the Vertical Temperature Profile Radiometer and TIROS-N Operational Vertical Sounders onboard satellites. In the ERA-40, which additionally assimilated Special Sensor Microwave/Imager data, there are discontinuities in 1987-1989. The R1 also presents further discontinuities, in 1988-1993 likely connected to replacement/introduction of NOAA-series satellites with different biases, and to the volcanic eruption of Mount Pinatubo in June 1991, which is known to have severely affected measurements of infrared radiances for several years. The discontinuities in 1996-1998 might be partially connected to change in the type of radiosonde, from VIZ-B to VIZ-B2. The R2, which covers only satellite era (1979-on), shows discontinuities mainly in 1992, 1996-1997, and 2001. The discontinuities in 1992 and 2001 might have been caused by change in the satellite measurements and those in 1996-1997 by some changes in land-based observations network. © 2012 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55067
Appears in Collections: 过去全球变化的重建
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作者单位: Instituto de Pesquisas Meteorológicas, UNESP, Avenida Luis Edmundo Coube 14-01, Bauru, SP, 17033-360, Brazil; Departamento de Ciências Atmosféricas, Universidade de São Paulo, Rua do Matão, 1226, Cid. Universitária, São Paulo, SP, 05508-090, Brazil; Instituto Tecnológico SIMEPAR, Centro Politécnico da UFPR, Jardim das Américas, Curitiba, PR, 81531-980, Brazil
Recommended Citation:
Sugahara S.,da Rocha R.P.,Ynoue R.Y.,et al. Spurious shifts in the pattern of diurnal variation of sea level pressure of reanalysis datasets[J]. Climate Dynamics,2013-01-01,40(2017-01-02)