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Title: Large-scale Meteorological Organization of Extreme Weather Events: Final Technical Report

Abstract

Although the occurrence of regional extreme weather events (EWEs) such as cold air outbreaks, heat waves, droughts and floods are known to be related to planetary climate modes (PCMs) such as the El-Nino Southern Oscillation or North Atlantic Oscillation, intermediate meteorological patterns (IMPs) such as jet stream blocking, cyclones, and high pressure systems are required to connect PCMs to EWEs. Our project has revealed a physical pathway for the interplay among EWEs, IMPs and PCMs. Under support of this award, we have characterized the behavior of IMPs that cause winter cold air outbreaks, extreme floods and warm season dry spells in the US. This includes formulating meteorological “fingerprints” for easily identifying IMPs. The research performed includes a parallel analysis of how well modern climate models are able to simulate IMP behavior. We have also developed a novel approach for characterizing PCM structures and identifying EWE-LMP-PCM linkages. We discovered that dry spells occurring during spring and summer over the US are affected by changes in the North Pacific Ocean temperature. We further revealed the physical origin of a critical jet stream pattern occurring over the North Pacific Ocean that provides a “bridge” between the water cycles of East Asia and Northmore » America, respectively. We developed an advanced diagnostic technique (called piecewise tendency diagnosis or PTD) to understand the physical causes for the IMP formation and EWE-LMP-PCM linkages.« less

Authors:
ORCiD logo [1];  [1];  [1];  [1]
  1. Georgia Tech Research Corp., Atlanta, GA (United States)
Publication Date:
Research Org.:
Georgia Tech Research Corp., Atlanta, GA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23). Climate and Environmental Sciences Division
OSTI Identifier:
1481773
Report Number(s):
DOE-GT-12554
DOE Contract Number:  
SC0012554
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES

Citation Formats

Black, Robert X., Deng, Yi, Zhao, Siyu, and Xie, Zuowei. Large-scale Meteorological Organization of Extreme Weather Events: Final Technical Report. United States: N. p., 2018. Web. doi:10.2172/1481773.
Black, Robert X., Deng, Yi, Zhao, Siyu, & Xie, Zuowei. Large-scale Meteorological Organization of Extreme Weather Events: Final Technical Report. United States. doi:10.2172/1481773.
Black, Robert X., Deng, Yi, Zhao, Siyu, and Xie, Zuowei. Mon . "Large-scale Meteorological Organization of Extreme Weather Events: Final Technical Report". United States. doi:10.2172/1481773. https://www.osti.gov/servlets/purl/1481773.
@article{osti_1481773,
title = {Large-scale Meteorological Organization of Extreme Weather Events: Final Technical Report},
author = {Black, Robert X. and Deng, Yi and Zhao, Siyu and Xie, Zuowei},
abstractNote = {Although the occurrence of regional extreme weather events (EWEs) such as cold air outbreaks, heat waves, droughts and floods are known to be related to planetary climate modes (PCMs) such as the El-Nino Southern Oscillation or North Atlantic Oscillation, intermediate meteorological patterns (IMPs) such as jet stream blocking, cyclones, and high pressure systems are required to connect PCMs to EWEs. Our project has revealed a physical pathway for the interplay among EWEs, IMPs and PCMs. Under support of this award, we have characterized the behavior of IMPs that cause winter cold air outbreaks, extreme floods and warm season dry spells in the US. This includes formulating meteorological “fingerprints” for easily identifying IMPs. The research performed includes a parallel analysis of how well modern climate models are able to simulate IMP behavior. We have also developed a novel approach for characterizing PCM structures and identifying EWE-LMP-PCM linkages. We discovered that dry spells occurring during spring and summer over the US are affected by changes in the North Pacific Ocean temperature. We further revealed the physical origin of a critical jet stream pattern occurring over the North Pacific Ocean that provides a “bridge” between the water cycles of East Asia and North America, respectively. We developed an advanced diagnostic technique (called piecewise tendency diagnosis or PTD) to understand the physical causes for the IMP formation and EWE-LMP-PCM linkages.},
doi = {10.2172/1481773},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}