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Aerosol Direct Radiative Effect

 
   
 
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Aerosol DRE from OMI and SCIAMACHY

South Atlantic Ocean

The aerosol Direct Radiative Effect (DRE) indicates the absorption of UV radiation by aerosols that are found over clouds. The aerosol DRE presented here are derived over a limited area off the west coast of Africa only, and the aerosols found above the clouds are smoke exclusively. The DRE is expressed in Watts per square meter (W m-2) based on the Differential Aerosol Absorption (DAA) technique, and derived from the instruments SCIAMACHY and OMI (combined with MODIS). Below the data products that are currently available from these instruments can be accessed.

OMI-MODISSCIAMACHY
The OMI-MODIS aerosol DRE over clouds is available from June-October in the years 2005-2020, in an area over the south-east Atlantic (20°W-10°E, 20°S-10°N).

The SCIAMACHY aerosol DRE over clouds is available from June-September in the years 2006-2009, in an area over the south-east Atlantic (20°W-10°E, 20°S-10°N).

Chilean wildfires

  OMI-MODIS

Archive (images and data)

 
OMI / MODIS : South Atlantic version 1.0 (JJAS 2005-2020):
individual days  |  monthly mean  |  explanation
Chile wildfires version 1.0 (DJ 2017,2023):
individual days
 
SCIAMACHY:  South Atlantic version 1.0 (JJAS 2006-2009):
individual days  |  monthly mean  |  explanation
 
 

Data use

The data are not copyrighted and are open to all for both commercial and non-commercial uses. If you used TEMIS Aerosol DRE data, please refer to the TEMIS Aerosol DRE data in the following way:

Data citation

OMI data citation:
De Graaf, M., Stammes, P., & Tilstra, L. G. (2019). OMI-MODIS aerosol direct radiative effect over clouds, version 1.0. Accessed: [Data access date] Royal Netherlands Meteorological Institute (KNMI). https://doi.org/10.21944/omi-modis-aerosol-direct-effect
SCIAMACHY data citation:
De Graaf, M., Stammes, P., & Tilstra, L. G. (2019). SCIAMACHY aerosol direct radiative effect over clouds, version 1.0. Accessed: [Data access date]. Royal Netherlands Meteorological Institute (KNMI). https://doi.org/10.21944/sciamachy-aerosol-direct-effect

Documentation

The OMI-MODIS direct radiative effect (DRE) data product is described in this Algorithm Theoretical Basis Document.

If you used TEMIS Aerosol DRE data for a publication (research or otherwise), or for any other purpose, please refer to the following publication:

For OMI data over the south-east Atlantic:

M. de Graaf, L.G. Tilstra, and P. Stammes, Aerosol direct radiative effect over clouds from a synergy of OMI and MODIS reflectances, Atmos. Meas. Techn., https://doi.org/10.5194/amt-12-5119-2019, doi:/10.5194/amt-12-5119-2019, 2019.
For OMI data during the 2017 or 2023 wildfire season in Chile:
M. de Graaf, L.G. Tilstra and P. Stammes, Aerosol shortwave radiative heating and cooling by the 2023 and 2017 Chilean wildfire smoke plumes, Geoph. Res. Letters, in review, 2023
For SCIAMACHY:
M. de Graaf, L.G. Tilstra, P. Wang and P. Stammes, Retrieval of the aerosol direct radiative effect over clouds from space-borne spectrometry, J. Geophys. Res. 117 (D7), D07207, doi: 10.1029/2011JD017160, 2012.
We request that you include the following acknowledgment: "We acknowledge the free use of aerosol DRE data from the (OMI/SCIAMACHY) sensor from www.temis.nl." We would appreciate receiving a copy of your publication, by contacting us via the contact form.


Acknowledgement

The development of Aerosol Direct Radiative Effect (DRE) over clouds data sets have been funded by the Dutch National Programme for Space Research of the Netherlands Space Office (NSO), projectnumber ALW-GO/12-32 and the European Space Agency (ESA) within the Support to Science Element, N.22403.