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Atmosphere 2016, 7(10), 128; doi:10.3390/atmos7100128

Satellite Assessments of Tropopause Dry Intrusions Correlated to Mid-Latitude Storms

1
Key laboratory of radiometric calibration and validation for environmental satellites, National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China
2
Department of Atmosphere, Nanjing University of Information Science & Technology, Nanjing 210044, China
*
Author to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 2 August 2016 / Revised: 19 September 2016 / Accepted: 1 October 2016 / Published: 11 October 2016
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Abstract

Dry intrusion is an important mid-latitude atmosphere phenomenon within the upper troposphere and lower stratosphere. It is often found to be related to the cyclogenesis, rainstorm, as well as convection generation and precipitation enhancement. Since the atmosphere environment for any of these above-mentioned weather is terribly complicated, those preexisting popular schemes which takes no account of water vapor may not suitable for detecting the dry intrusion related to such weather events. With regard to the merits and demerits of the current preexisting schemes, a new scheme based on Fengyun-2E geo-stationary satellite data is presented in this study to detect the tropopause dry intrusion. The scheme is set up based on the statistical relationship between water vapor at high level troposphere, the general moist potential vorticity, ozone concentration and upper-level jets. Validations are made by using Fengyun-3B observed ozone profiles and NCEP FNL analysis data. Two mid-latitude storm episodes occurred in China in 2012 and 2014 are selected as demonstration to show the applicability of the method we developed in this study. Good application effects in both cases suggest that the new method for detecting dry intrusion is applicable and can be helpful in middle-latitude disastrous weather monitoring and forecasting. View Full-Text
Keywords: dry intrusion; stratosphere-troposphere exchange; mid-latitude; satellite dry intrusion; stratosphere-troposphere exchange; mid-latitude; satellite
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Shou, Y.-X.; Lu, F.; Shou, S. Satellite Assessments of Tropopause Dry Intrusions Correlated to Mid-Latitude Storms. Atmosphere 2016, 7, 128.

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