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Chem2D-opp: a New Linearized Gas-phase Ozone Photochemistry Parameterization for High-altitude Nwp and Climate Models : Volume 6, Issue 4 (17/07/2006)

By McCormack, J. P.

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Book Id: WPLBN0003988738
Format Type: PDF Article :
File Size: Pages 68
Reproduction Date: 2015

Title: Chem2D-opp: a New Linearized Gas-phase Ozone Photochemistry Parameterization for High-altitude Nwp and Climate Models : Volume 6, Issue 4 (17/07/2006)  
Author: McCormack, J. P.
Volume: Vol. 6, Issue 4
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2006
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Siskind, D. E., Eckermann, S. D., Mcgee, T. J., & Mccormack, J. P. (2006). Chem2D-opp: a New Linearized Gas-phase Ozone Photochemistry Parameterization for High-altitude Nwp and Climate Models : Volume 6, Issue 4 (17/07/2006). Retrieved from http://www.ebooklibrary.org/


Description
Description: E. O. Hulburt Center for Space Research, Naval Research Laboratory (NRL), Washington DC, USA. The new CHEM2D-Ozone Photochemistry Parameterization (CHEM2D-OPP) for high-altitude numerical weather prediction (NWP) systems and climate models specifies the net ozone photochemical tendency and its sensitivity to changes in ozone mixing ratio, temperature and overhead ozone column based on calculations from the CHEM2D interactive middle atmospheric photochemical transport model. We evaluate CHEM2D-OPP performance using both short-term (6-day) and long-term (1-year) stratospheric ozone simulations with the prototype high-altitude NOGAPS-ALPHA forecast model. An inter-comparison of NOGAPS-ALPHA 6-day ozone hindcasts for 7 February 2005 with ozone photochemistry parameterizations currently used in operational NWP systems shows that CHEM2D-OPP yields the best overall agreement with Aura Microwave Limb Sounder ozone profile measurements. A 1-year free-running NOGAPS-ALPHA simulation using CHEM2D-OPP produces a realistic seasonal cycle in zonal mean ozone throughout the stratosphere. We find that the combination of a model cold temperature bias at high latitudes in winter and a warm bias in the CHEM2D-OPP temperature climatology can degrade the performance of the linearized ozone photochemistry parameterization over seasonal time scales despite the fact that the parameterized temperature dependence is weak in these regions.

Summary
CHEM2D-OPP: A new linearized gas-phase ozone photochemistry parameterization for high-altitude NWP and climate models

 

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