A comparison of the effectiveness of 6S and SMAC in correcting for atmospheric interference of meteosat second generation images
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
A comparison of the effectiveness of 6S and SMAC in correcting for atmospheric interference of meteosat second generation images. / Proud, Simon Richard; Fensholt, R.; Rasmussen, M.O.; Sandholt, I.
In: Journal of Geophysical Research: Biogeosciences, Vol. 115, No. 17, 2010, p. D17209 .Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - A comparison of the effectiveness of 6S and SMAC in correcting for atmospheric interference of meteosat second generation images
AU - Proud, Simon Richard
AU - Fensholt, R.
AU - Rasmussen, M.O.
AU - Sandholt, I.
PY - 2010
Y1 - 2010
N2 - Atmospheric perturbations are a large source of uncertainty in remotely sensed imagery of the Earth's surface. This paper explores the effectiveness of the simplified method for atmospheric correction (SMAC) in reducing the effects of these perturbations in images of the African Continent gathered by the Spinning Enhanced Visible & InfraRed Imager (SEVIRI) aboard Meteosat Second Generation (MSG). In order to examine the accuracy of the SMAC we compare its results to those computed by the Second Simulation of the Satellite Signal in the Solar Spectrum (6SV1.1), a highly accurate radiative transfer code, for a wide range of atmospheric conditions. We find that the SMAC does not offer a high level of accuracy under many sets of atmospheric conditions with under 20% of observations in channels 1 and 2 providing a relative error of less than 10% when compared to 6SV1.1. Those observations involving medium-to-high solar or viewing zenith angles (greater than 40°) or in areas with a high ozone or water vapor content (greater than 0.2 cm/atm and 1.5 gm/cm for ozone and water vapor respectively) returning a particularly high relative error. Nevertheless, as the SMAC is up to 3000 times faster in processing a SEVIRI scene than 6SV1.1 it is still a useful atmospheric correction tool, particularly as a majority of the differences between the SMAC and 6S appear straightforward to correct for. © 2010 by the American Geophysical Union.
AB - Atmospheric perturbations are a large source of uncertainty in remotely sensed imagery of the Earth's surface. This paper explores the effectiveness of the simplified method for atmospheric correction (SMAC) in reducing the effects of these perturbations in images of the African Continent gathered by the Spinning Enhanced Visible & InfraRed Imager (SEVIRI) aboard Meteosat Second Generation (MSG). In order to examine the accuracy of the SMAC we compare its results to those computed by the Second Simulation of the Satellite Signal in the Solar Spectrum (6SV1.1), a highly accurate radiative transfer code, for a wide range of atmospheric conditions. We find that the SMAC does not offer a high level of accuracy under many sets of atmospheric conditions with under 20% of observations in channels 1 and 2 providing a relative error of less than 10% when compared to 6SV1.1. Those observations involving medium-to-high solar or viewing zenith angles (greater than 40°) or in areas with a high ozone or water vapor content (greater than 0.2 cm/atm and 1.5 gm/cm for ozone and water vapor respectively) returning a particularly high relative error. Nevertheless, as the SMAC is up to 3000 times faster in processing a SEVIRI scene than 6SV1.1 it is still a useful atmospheric correction tool, particularly as a majority of the differences between the SMAC and 6S appear straightforward to correct for. © 2010 by the American Geophysical Union.
KW - RADIATIVE-TRANSFER
KW - SUCCESSIVE ORDER
KW - SOLAR SPECTRUM
KW - LAND
KW - AEROSOLS
KW - EQUATION
KW - ALBEDO
KW - MODEL
KW - CODE
KW - MSG
UR - http://www.scopus.com/inward/record.url?scp=77957552431&partnerID=8YFLogxK
U2 - 10.1029/2009JD013693
DO - 10.1029/2009JD013693
M3 - Journal article
VL - 115
SP - D17209
JO - Journal of Geophysical Research: Solid Earth
JF - Journal of Geophysical Research: Solid Earth
SN - 0148-0227
IS - 17
ER -
ID: 33219147