globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2015JD024447
Title:
An idealized stratospheric model useful for understanding differences between long-lived trace gas measurements and global chemistry-climate model output
Author: Ray E.A.; Moore F.L.; Rosenlof K.H.; Plummer D.A.; Kolonjari F.; Walker K.A.
Source Publication: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
Publishing Year: 2016
Language: 英语
Keyword: Modeling ; Stratosphere ; Tracers ; Transport
English Abstract: We use a modified version of the tropical leaky pipe (TLP) model of the stratosphere to explore how well an idealized model can (1) reproduce global chemistry-climate model (CCM) output and (2) constrain transport characteristics necessary to replicate measurements of long-lived trace gases. The version of the TLP model we use includes the simulation of long-lived trace gases, such as SF6 and CO2, as well as photochemically active trace gases such as CFC-11, CFC-12, and N2O. The TLP model was found to accurately replicate trace gas output from the Canadian Middle Atmosphere Model (CMAM) for time-averaged profiles in the tropics and each extratropical region. Given confidence that the TLP model represents the basic transport features in CMAM we then used the TLP model to interpret differences between CMAM output and measurements from the Atmospheric Chemistry Experiment and balloons. The TLP model is shown to uniquely determine residual mean circulation and recirculation (mixing between the extratropics and tropics) changes necessary for CMAM to more accurately simulate the measurements. Such guidance on these transport parameters is novel due to the relatively high precision and the simultaneous derivation of important parameters, as compared to previous studies. The TLP model can ideally be used as a bridge between measurements and CCMs to potentially allow more targeted modification of the CCMs than would otherwise be possible. ©2016. American Geophysical Union.
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/62946
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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Affiliation: Chemical Sciences Division NOAA Earth System Research Laboratory Boulder Colorado USA; Global Monitoring Division NOAA Earth System Research Laboratory Boulder, Colorado USA; Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder, Colorado USA; Canadian Centre for Climate Modeling and Analysis Environment Canada Montreal, Quebec Canada; Department of Physics University of Toronto Toronto, Ontario Canada

Recommended Citation:
Ray E.A.,Moore F.L.,Rosenlof K.H.,et al. An idealized stratospheric model useful for understanding differences between long-lived trace gas measurements and global chemistry-climate model output[J]. Journal of Geophysical Research: Atmospheres,2016-01-01
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