Aerosol Radiative Effects Over India from Direct Radiation Measurements and Model Estimates

2021 ◽  
Author(s):  
Tamanna Subba ◽  
Mukunda M. Gogoi ◽  
K. Krishna Moorthy ◽  
Pradip K. Bhuyan ◽  
Binita Pathak ◽  
...  
Keyword(s):  
Radiative Effects ◽  
Direct Radiation ◽  
Aerosol Radiative Effects ◽  
Radiation Measurements ◽  
Aerosol Radiative

scholarly journals Aerosol radiative effects with MACv2

2019 ◽  
Author(s):  
Stefan Kinne
Keyword(s):  
Anthropogenic Sources ◽  
Transfer Model ◽  
Strong Impact ◽  
Radiative Effects ◽  
Anthropogenic Aerosols ◽  
Anthropogenic Aerosol ◽  
Aerosol Forcing ◽  
Aerosol Radiative Effects ◽  
The Impact ◽  
Aerosol Radiative

Abstract. onthly global maps for aerosol properties of the MACv2 climatology are applied in an off-line radiative transfer model to determine aerosol radiative effects. For details beyond global averages in most cases global maps are presented to visualize regional and seasonal details. Aside from the direct radiative (aerosol presence) effect, including those for aerosol components as extracted from MACv2 aerosol optics, also the major aerosol indirect radiative effect is covered. Hereby, the impact of smaller drops in water clouds due to added anthropogenic aerosol was simulated by applying a satellite retrieval based fit from locally associations between aerosol and drop concentrations over oceans. Present-day anthropogenic aerosols of MACv2 – on a global average basis – reduce the radiative net-fluxes at the top of the atmosphere (TOA) by −1.0 W/m2 and at the surface by −2.1 W/m2. Direct cooling contributions are only about half of indirect contributions (−.35 vs −.65) at TOA, but about twice at the surface (−1.45 vs −.65), as solar absorption of the direct effect warms the atmosphere by +1.1 W/m2. Natural aerosols are on average less absorbing (for a relatively larger solar TOA cooling) and larger in size (now contributing with IR greenhouse warming). Thus, average TOA direct forcing efficiencies for total and anthropogenic aerosol happen to be similar: −11 W/m2/AOD at all-sky and −24 W/m2/AOD at clear-sky conditions. The present-day direct impact by all soot (BC) is globally averaged +0.55W/m2 and at least half of it should be attributed to anthropogenic sources. Hereby any accuracy of anthropogenic impacts, not just for soot, suffers from the limited access to a pre-industrial reference. Anthropogenic uncertainty has a particular strong impact on aerosol indirect effects, which dominate the (TOA) forcing. Accounting for uncertainties in the anthropogenic definition, present-day aerosol forcing is estimated to stay within the −0.7 to −1.6 W/m2 range, with a best estimate at −1 W/m2. Calculations with model predicted temporal changes to anthropogenic AOD indicate that qualitatively the anthropogenic aerosol forcing has not changed much over the last decades and is not likely to increase over the next decades, despite strong regional shifts. These regional shifts explain most solar insolation (brightening or dimming) trends that have been observed by ground-based radiation data.

scholarly journals Does temperature nudging overwhelm aerosol radiative effects in regional integrated climate models?

2017 ◽  
Vol 154 ◽  
pp. 42-52 ◽  
Author(s):  
Jian He ◽  
Timothy Glotfelty ◽  
Khairunnisa Yahya ◽  
Kiran Alapaty ◽  
Shaocai Yu
Keyword(s):  
Climate Models ◽  
Radiative Effects ◽  
Aerosol Radiative Effects ◽  
Aerosol Radiative

Regional simulation of aerosol radiative effects and their influence on rainfall over India using WRFChem model

2016 ◽  
Vol 182 ◽  
pp. 232-242 ◽  
Author(s):  
Sumita Kedia ◽  
Ribu Cherian ◽  
Sahidul Islam ◽  
Subrata Kumar Das ◽  
Akshara Kaginalkar
Keyword(s):  
Radiative Effects ◽  
Regional Simulation ◽  
Aerosol Radiative Effects ◽  
Aerosol Radiative

Aerosol radiative effects on mesoscale cloud–precipitation variables over Northeast Asia during the MAPS-Seoul 2015 campaign

2018 ◽  
Vol 172 ◽  
pp. 109-123 ◽  
Author(s):  
Shin-Young Park ◽  
Hyo-Jung Lee ◽  
Jeong-Eon Kang ◽  
Taehyoung Lee ◽  
Cheol-Hee Kim
Keyword(s):  
Northeast Asia ◽  
Radiative Effects ◽  
Aerosol Radiative Effects ◽  
Aerosol Radiative
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