English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Radiative signature of absorbing aerosol over the eastern Mediterranean basin

Mishra, A. K., Klingmueller, K., Fredj, E., Lelieveld, J., Rudich, Y., & Koren, I. (2014). Radiative signature of absorbing aerosol over the eastern Mediterranean basin. Atmospheric Chemistry and Physics, 14(14), 7213-7231. doi:10.5194/acp-14-7213-2014.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Mishra, A. K.1, Author
Klingmueller, K.1, Author
Fredj, E.1, Author
Lelieveld, J.2, Author           
Rudich, Y.1, Author
Koren, I.1, Author
Affiliations:
1external, ou_persistent22              
2Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              

Content

show
hide
Free keywords: -
 Abstract: The effects of absorbing aerosols on the atmospheric radiation budget and dynamics over the eastern Mediterranean region are studied using satellites and ground-based observations, and radiative transfer model calculations, under summer conditions. Climatology of aerosol optical depth (AOD), single scattering albedo (SSA) and size parameters were analyzed using multiyear (1999-2012) observations from Moderate Resolution Imaging Spectroradiometer (MODIS), Multi-angle Imaging SpectroRadiometer (MISR) and AErosol RObotic NET-work (AERONET). Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP)-derived aerosol vertical distributions and their classifications are used to calculate the AOD of four dominant aerosol types: dust, polluted dust, polluted continental, and marine aerosol over the region. The seasonal mean (June-August 2010) AODs are 0.22 +/- 0.02, 0.11 +/- 0.04, 0.10 +/- 0.04 and 0.06 +/- 0.01 for polluted dust, polluted continental, dust and marine aerosol, respectively. Changes in the atmospheric temperature profile as a function of absorbing aerosol loading were derived for the same period using observations from the AIRS satellite. We inferred heating rates in the aerosol layer of similar to 1.7 +/- 0.8 K day(-1) between 925 and 850 hPa, which is attributed to aerosol absorption of incoming solar radiation. Radiative transfer model (RTM) calculations show significant atmospheric warming for dominant absorbing aerosol over the region. A maximum atmospheric forcing of +16.7 +/- 7.9 W m(-2) is calculated in the case of polluted dust, followed by dust (+9.4 +/- 4.9 W m(-2)) and polluted continental (+6.4 +/- 4.5 W m(-2)). RTM-derived heating rate profiles for dominant absorbing aerosol show warming of 0.1-0.9 K day(-1) in the aerosol layer (<3.0 km altitudes), which primarily depend on AODs of the different aerosol types. Diabatic heating due to absorbing aerosol stabilizes the lower atmosphere, which could significantly reduce the atmospheric ventilation. These conditions can enhance the "pollution pool" over the eastern Mediterranean.

Details

show
hide
Language(s):
 Dates: 2014
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000339934900007
DOI: 10.5194/acp-14-7213-2014
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Atmospheric Chemistry and Physics
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Katlenburg-Lindau, Germany : European Geosciences Union
Pages: - Volume / Issue: 14 (14) Sequence Number: - Start / End Page: 7213 - 7231 Identifier: ISSN: 1680-7316
CoNE: https://pure.mpg.de/cone/journals/resource/111030403014016