| DOI: | 10.1002/jgrd.50560
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| 论文题名: | The radar tropopause at 78°N, 16°E: Characteristics of diurnal variation |
| 作者: | Hall C.M.
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| 刊名: | Journal of Geophysical Research Atmospheres
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| ISSN: | 21698996
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| 出版年: | 2013
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| 卷: | 118, 期:12 | | 起始页码: | 6354
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| 结束页码: | 6359
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| 语种: | 英语
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| 英文关键词: | Arctic
; diurnal variation
; tropopause
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| Scopus关键词: | Altitude control
; Atmospheric temperature
; Radar
; Temperature measurement
; Troposphere
; Altitude variation
; Arctic
; Diurnal variation
; Radar observations
; Radiosonde observations
; Surface air temperatures
; Time resolution
; tropopause
; Clouds
; adiabatic lapse rate
; air temperature
; altitude
; arctic environment
; diurnal variation
; latitude
; radar
; radiosonde
; stratosphere
; time series
; timescale
; tropopause
; troposphere
; Arctic
; Svalbard
; Svalbard and Jan Mayen
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| 英文摘要: | A continuous 5 year time series of tropopause altitude made by the SOUSY VHF radar on Svalbard (78°N, 16°E) is examined for diurnal variation. The data have a nominal time resolution of 1 h, allowing for investigation of intraday timescales not normally possible using radiosonde observations. Periodicities identified in tropopause altitude are found to vary with season. Surface air temperature measurements naturally exhibit diurnal variations which depend on season: however, it is demonstrated that, using a simple scenario of constant adiabatic lapse rate in the troposphere, the tropopause altitude variation that might be anticipated from that of the surface air temperature is not in agreement with the radar observation. Of several mechanisms that could be postulated for this discrepancy, it is demonstrated that a likely candidate is intraday top-down forcing from the stratosphere. Key Points Seasonal Intra-day variability of arctic tropopause altitude is presented Both troposphere and stratosphere forcing control tropopause diurnal timescales These results are unique for such high latitude. © 2013. American Geophysical Union. All Rights Reserved. |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/63647
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| 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: | Tromsø Geophysical Observatory, University of Tromsø, Tromsø NO-9037, Norway
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| Recommended Citation: | |
Hall C.M.. The radar tropopause at 78°N, 16°E: Characteristics of diurnal variation[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(12)
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