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Title: Diagnostics for Stationary Planetary-scale Waves

Abstract

The largest waves in Earth’s atmosphere are nearly stationary and thus appear in monthly means of pressure and temperature. But they evolve slowly with time, forming a link between weather and climate. For example, droughts in California are associated with persistent high pressure off the west coast of North America that directs storms poleward; the high pressure areas, in turn, are often linked to climate shifts in the western tropical Pacific (e.g. Trenberth 1988, Molteni et al. 2015, Scaife et al. 2017). With numerical models of weather and climate, a necessary condition for believing predictions of the future is that the models accurately simulate a background unperturbed climatology. Therefore the PCMDI is establishing a standard set of performance metrics for climate models that compares observations with simulations of key space-time fields (Gleckler et al. 2016). This technical report proposes an additional metric involving quasi-stationary, planetary-scale waves in atmospheric geopotential Φ.

Authors:
 [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1480410
Report Number(s):
LLNL-TR-759987
948510
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES

Citation Formats

Covey, Curt, and Lindzen, Richard S. Diagnostics for Stationary Planetary-scale Waves. United States: N. p., 2018. Web. doi:10.2172/1480410.
Covey, Curt, & Lindzen, Richard S. Diagnostics for Stationary Planetary-scale Waves. United States. doi:10.2172/1480410.
Covey, Curt, and Lindzen, Richard S. Mon . "Diagnostics for Stationary Planetary-scale Waves". United States. doi:10.2172/1480410. https://www.osti.gov/servlets/purl/1480410.
@article{osti_1480410,
title = {Diagnostics for Stationary Planetary-scale Waves},
author = {Covey, Curt and Lindzen, Richard S.},
abstractNote = {The largest waves in Earth’s atmosphere are nearly stationary and thus appear in monthly means of pressure and temperature. But they evolve slowly with time, forming a link between weather and climate. For example, droughts in California are associated with persistent high pressure off the west coast of North America that directs storms poleward; the high pressure areas, in turn, are often linked to climate shifts in the western tropical Pacific (e.g. Trenberth 1988, Molteni et al. 2015, Scaife et al. 2017). With numerical models of weather and climate, a necessary condition for believing predictions of the future is that the models accurately simulate a background unperturbed climatology. Therefore the PCMDI is establishing a standard set of performance metrics for climate models that compares observations with simulations of key space-time fields (Gleckler et al. 2016). This technical report proposes an additional metric involving quasi-stationary, planetary-scale waves in atmospheric geopotential Φ.},
doi = {10.2172/1480410},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}