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Table 4 Sources of measures of AOD
Source
Description
AERONET
a
A network of sun photometers providing AOD measurements
globally.
UK Meteorological Office
(MIDAS)
b
Integrated Data Archive System (MIDIS); specific to the UK, the
Met Office makes ground measurements publically available.
MODIS
c
Satellite-based measurement of AOD at 550 nm; available for free
download.
LEDAPS
d
Estimates of AOD for Landsat using dense dark vegetation (DDV)
targets and relationships with the SWIR to visible wavelengths.
ARCSI
e
Multiple algorithms, including the DDV method, but primarily
uses a DOS based method to estimate surface reflectance in the
blue wavelengths used for inversion.
SEN2COR
f
Estimates AOD for Sentinel-2 using dense dark vegetation (DDV)
targets and relationship from the SWIR to visible wavelengths.
Frantz et al. (n.d.)
Time series analysis to identify persistently dark targets that are
used for AOD inversion.
a
http://aeronet.gsfc.nasa.gov
b
http://catalogue.ceda.ac.uk/uuid/220a65615218d5c9cc9e4785a3234bd0
c
http://modis-atmos.gsfc.nasa.gov/MOD04_L2/
d
http://ledaps.nascom.nasa.gov
e
http://www.rsgislib.org/arcsi
f
http://step.esa.int/main/third-party-plugins-2/sen2cor/
Table 5 Sources of measures of atmospheric water
Source
Description
MODIS
a
Satellite-based measurement of total column water vapour.
Freely available download.
Global precipitation
measurement (GPM)
b
NASA owned satellite that includes instruments for the
measurement of total column water vapour.
AMSR-2
c
JAXA owned satellite that includes instruments for the
measurement of total column water vapour.
Seasonal average
d
Where satellite estimates are not available for that date of
acquisition Frantz et al. (n.d.) uses a local average.
a
http://modis-atmos.gsfc.nasa.gov/MOD05_L2
b
http://www.nasa.gov/mission_pages/GPM/main; Draper et al. (2015)
c
http://suzaku.eorc.jaxa.jp/GCOM_W
d
Frantz et al. (n.d.)
P. Bunting