DOI: 10.1002/grl.50207
论文题名: The impact of radiosonde data over the ice-free Arctic Ocean on the atmospheric circulation in the Northern Hemisphere
作者: Inoue J. ; Enomoto T. ; Hori M.E.
刊名: Geophysical Research Letters
ISSN: 0094-9270
EISSN: 1944-9001
出版年: 2013
卷: 40, 期: 5 起始页码: 864
结束页码: 869
语种: 英语
英文关键词: data assimilation
; ice-free Arctic
; radiosonde
Scopus关键词: Atmospheric circulation
; Data assimilation
; ice-free Arctic
; Lower stratosphere
; Marginal Ice Zone
; Northern Hemispheres
; Numerical weather prediction
; Radiosonde observations
; Atmospheric temperature
; Climatology
; Clouds
; Data processing
; Oceanography
; Radiosondes
; Upper atmosphere
; Ice
; air temperature
; atmospheric circulation
; comparative study
; cyclogenesis
; data set
; Northern Hemisphere
; radiosonde
; troposphere
; weather forecasting
; Arctic Ocean
; Japan
英文摘要: We investigated the impact of radiosonde data from the ice-free Arctic Ocean obtained by the Japanese R/V Mirai during a cruise in the fall of 2010 on the AFES-LETKF experimental ensemble reanalysis version 2 (ALERA2) data set. The reanalysis used radiosonde data over the ice-free region. Compared with observations, it captured Arctic cyclogenesis along the marginal ice zone, including a tropopause fold, very well. Without the observations, a 5 K cold bias in air temperature was found, suggesting that radiosondes over the Arctic Ocean are vital for reproducing the change in tropopause variability. As a consequence of including the Arctic radiosondes, a tropopause height difference formed and persisted after cyclogenesis, increasing the subpolar jet in ALERA2 by 3% at 65-70°N. The air temperature in the whole troposphere north of 70°N showed a cooling in the 2 weeks after cyclogenesis, whereas a warming was observed in the lower stratosphere, reflecting the regional impact of the intensive radiosonde observations. A remote response of the radiosondes over the Arctic Ocean to the midlatitudes was discussed by focusing on the density of observing network and seasonal march of atmospheric circulations. Our results demonstrated that the high-temporal radiosonde observations over the Arctic Ocean can help reduce uncertainty in reanalyses and numerical weather predictions throughout the northern half of the Northern Hemisphere for weeks afterwards. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876815596&doi=10.1002%2fgrl.50207&partnerID=40&md5=2535551a55e49698e29c6dafd993448d
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6534
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Earth Simulator Center, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
Recommended Citation:
Inoue J.,Enomoto T.,Hori M.E.. The impact of radiosonde data over the ice-free Arctic Ocean on the atmospheric circulation in the Northern Hemisphere[J]. Geophysical Research Letters,2013-01-01,40(5).