DOI: 10.1002/jgrd.50518
论文题名: QBO-dependent relation between electron precipitation and wintertime surface temperature
作者: Maliniemi V. ; Asikainen T. ; Mursula K. ; Seppälä A.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 12 起始页码: 6302
结束页码: 6310
语种: 英语
英文关键词: electron precipitation
; MEPED instrument
; NAO
; QBO
; surface temperature
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Electron scattering
; Geomagnetism
; NASA
; Ozone layer
; Surface properties
; Electron precipitation
; Energetic electron precipitation
; NAO
; National Oceanic and Atmospheric Administration
; North Atlantic oscillations
; QBO
; Quasi-biennial oscillation
; Surface temperatures
; Magnetosphere
; concentration (composition)
; electron
; EOS
; geomagnetic field
; ion
; mesosphere
; nitrogen oxides
; NOAA satellite
; North Atlantic Oscillation
; particle settling
; POES
; quasi-biennial oscillation
; stratosphere
; surface temperature
; upper atmosphere
; winter
; Arctic
; Arctic Ocean
; Barents Sea
; Canada
; Greenland
; Siberia
英文摘要: Recent research has shown that energetic particle precipitation into the upper atmosphere can change ion and neutral chemistry, e.g., by enhancing NOx concentration in the mesosphere, which, in turn, can affect stratospheric ozone balance under appropriate conditions. It has been suggested that this may affect the surface temperatures at high latitudes by modulating tropospheric circulation. Motivated by such results, we compare here the wintertime energetic electron precipitation (EEP) with North Atlantic Oscillation (NAO) and surface air temperature (SAT) in the Northern Hemisphere. We use the recently recalibrated energetic electron data from the Medium Energy Proton and Electron Detector instrument of the National Oceanic and Atmospheric Administration (NOAA)/Polar Orbiting Environment Satellites in two energy ranges (30-100 keV and 100-300 keV), the NAO index from NOAA, and the NASA Goddard Institute for Space Studies surface temperature analysis for years 1980-2010. We find a statistically significant correlation between EEP and the NAO index and also between EEP and SAT in certain geographic regions. The strongest negative correlation is found in Northeast Canada/Greenland, while the strongest positive correlation is found in North Siberia/Barents Sea, in agreement with similar studies using global geomagnetic activity as a proxy for particle precipitation. We find higher correlation when the two winters (1984/1985 and 2003/2004) of unprecedentedly strong sudden stratospheric warmings are excluded. We also find that the different phases of quasi-biennial oscillation (QBO; observed at 30 hPa) lead to dramatically different correlation patterns, with easterly QBO producing considerably stronger and spatially wider correlation and larger temperature response than westerly QBO. Key Points We use corrected MEPED data to obtain long time series of electron precipitation Electron precipitation can modulate surface temperature and NAO during winter Effect is notably larger during eastern QBO and almost disappears in western QBO © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63646
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Physics, Centre of Excellence in Research, University of Oulu, PO Box 3000, FI-90014 Oulu, Finland; Earth Observation, Finnish Meteorological Institute, Helsinki, Finland
Recommended Citation:
Maliniemi V.,Asikainen T.,Mursula K.,et al. QBO-dependent relation between electron precipitation and wintertime surface temperature[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(12)