Deriving Aerosol Parameters from in–situ Spectrometer Measurements for Validation of Remote Sensing Products
2017
Uncertainties of aerosol parameters are the limiting factor for atmospheric correction over inland and coastal waters. For
validating remote sensing products from these optically complex and spatially inhomogeneous waters the spatial
resolution of automated sun photometer networks like AERONET is too coarse and additional measurements on the test
site are required. We have developed a method which allows the derivation of aerosol parameters from measurements
with any spectrometer with suitable spectral range and resolution. This method uses a pair of downwelling irradiance and
sky radiance measurements for the extraction of the turbidity coefficient and aerosol Angstrom exponent. The data can
be acquired fast and reliable at almost any place during a wide range of weather conditions. A comparison to aerosol
parameters measured with a Cimel sun photometer provided by AERONET shows a reasonable agreement for the
Angstrom exponent. The turbidity coefficient did not agree well with AERONET values due to fit ambiguities,
indicating that future research should focus on methods to handle parameter correlations within the underlying model.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
10
References
0
Citations
NaN
KQI