Aerosol Effects on Clear‐Sky Shortwave Heating in the Asian Monsoon Tropopause Layer

Author:

Gao Jie12ORCID,Huang Yi3ORCID,Peng Yiran12ORCID,Wright Jonathon S.12ORCID

Affiliation:

1. Department of Earth System Science Ministry of Education Key Laboratory for Earth System Modeling Tsinghua University Beijing China

2. Institute for Global Change Studies Tsinghua University Beijing China

3. Department of Atmospheric and Oceanic Sciences McGill University Montreal QC Canada

Abstract

AbstractThe Asian tropopause aerosol layer (ATAL) has emerged in recent decades with aerosol accumulation near tropopause above Asian Summer Monsoon region. Although ATAL effects on surface and top‐of‐atmosphere (TOA) radiation budgets are well established, the magnitude and variability of ATAL effects on radiative transfer within the tropopause layer remain poorly constrained. Here, we investigate the impacts of various aerosol types and layer structures on clear‐sky shortwave radiative heating in the Asian monsoon tropopause layer using reanalysis products and offline radiative transfer simulations. ATAL effects on shortwave radiative heating based on the Modern‐Era Retrospective Analysis for Research and Applications, version 2 aerosol reanalysis are on the order of 15% of mean clear‐sky radiative heating within the tropopause layer, although discrepancies among recent reanalysis and forecast products suggest that this ratio could be as small as ∼10% or as large as ∼70%. Uncertainties in surface and TOA flux effects are also large, with values spanning one order of magnitude at the TOA. ATAL effects on radiative heating peak between 150 and 80 hPa (360–400 K potential temperature) along the southern flank of the anticyclone. Clear‐sky and all‐sky shortwave heating are at local minima in this vertical range, which is situated between the positive influences of monsoon‐enhanced water vapor and the negative influence of the “ozone valley” in the monsoon lower stratosphere. ATAL effects also extend further toward the west, where diabatic vertical velocities remain upward despite descent in pressure coordinates.

Funder

Ministry of Science and Technology of the People's Republic of China

National Natural Science Foundation of China

Natural Sciences and Engineering Research Council of Canada

Publisher

American Geophysical Union (AGU)

Subject

Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geophysics

Reference107 articles.

1. Aerosols, Cloud Microphysics, and Fractional Cloudiness

2. Atmospheric Chemistry Observations & Modeling National Center for Atmospheric Research University Corporation for Atmospheric Research. (2020).Whole Atmosphere Community Climate Model (WACCM) Model Output[Dataset].Research Data Archive at the National Center for Atmospheric Research Computational and Information Systems Laboratory. Retrieved fromhttps://rda.ucar.edu/datasets/ds313.6/

3. Boundary layer sources for the Asian anticyclone: Regional contributions to a vertical conduit

4. Transport of Asian surface pollutants to the global stratosphere from the Tibetan Plateau region during the Asian summer monsoon

5. Global modeling studies of composition and decadal trends of the Asian Tropopause Aerosol Layer

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