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Effect of Dust Aerosol on Surface Solar Irradiance Retrieval from Satellite Observations

Roy, Arindam and Heinemann, Detlev and Hammer, Annette (2021) Effect of Dust Aerosol on Surface Solar Irradiance Retrieval from Satellite Observations. ESA Living Planet Symposium 2022, 23.-27. Mai 2022, Bonn, Deutschland. (In Press)

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Atmospheric aerosols have the highest impact on the solar irradiance reaching the surface of the Earth under cloudless conditions. Aerosols scatter and absorb solar irradiance, resulting in an attenuation of the Direct Normal Irradiation (DNI) and an increase in the Diffused Horizontal Irradiation (DHI). Ultimately this causes the total Global Horizontal Irradiance (GHI) at the ground surface to reduce. Pre-monsoon period in the arid and semi-arid regions of the Indian subcontinent is conducive to dust storm events due to the intense surface heating and steep atmospheric pressure gradients in Summer. This study analyzes the degradation in accuracy of satellite retrieved GHI under situations of high atmospheric dust aerosol content. Heliosat method is used to derive cloud index maps from Meteosat-8 visible channel images for a period in June 2018 during which heavy dust storms were reported in Northern India. Two sources of clear sky data are utilized for transforming Cloud Index (CI) to GHI. They are Dumortier model with climatological turbidity values and CAMS McClear with measured or modelled Aerosol Optical Depth (AOD) values. The satellite estimates are validated against ground measured GHI from a BSRN station. Measurement of Particulate Matter from a nearby Air Quality monitoring station is used to analyze the dust Aerosol Optical Depth (AOD) modelled by CAMS. The results show that there is a large under-estimation of satellite retrieved GHI derived using the McClear model, while the GHI derived with Dumortier model shows over-estimation.

Item URL in elib:https://elib.dlr.de/147551/
Document Type:Conference or Workshop Item (Speech)
Title:Effect of Dust Aerosol on Surface Solar Irradiance Retrieval from Satellite Observations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hammer, AnnetteUNSPECIFIEDhttps://orcid.org/0000-0002-5630-3620
Date:8 December 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Status:In Press
Keywords:Aerosol, Turbidity, Satellite, Heliosat, Clear Sky, Dust, GHI
Event Title:ESA Living Planet Symposium 2022
Event Location:Bonn, Deutschland
Event Type:international Conference
Event Dates:23.-27. Mai 2022
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Energy System Transformation
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Systems Analysis and Technology Assessment
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Energy Systems Analysis, OL
Deposited By: Roy, Arindam
Deposited On:15 Dec 2021 18:34
Last Modified:15 Dec 2021 18:34

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