A semi-operative approach to lake water quality retrieval from remote sensing data

The Science of the Total Environment
J PulliainenM Hallikainen

Abstract

A semi-operative approach to retrieve chlorophyll-a concentration from airborne/spaceborne spectrometer observations has been developed and tested using the airborne imaging spectrometer (AISA) data from 11 lakes located in southern Finland. The retrieval approach is empirical and requires nearly simultaneous in situ training data on water quality for the determination of regression coefficients. However, the training data does not have to be collected from every lake under investigation. Instead, the results obtained indicate that reliable estimates on the level of chlorophyll-a (chl-a) for an individual lake can be achieved without employing in situ data representing this specific lake. This enables the estimation of water quality from remotely sensed data for numerous lakes with the aid of reference data only for a few selected lakes representing the region under investigation. In addition, it is shown that the remotely sensed spectrum shape characteristics are highly affected by the trophic and humic state of the lake water.

References

May 1, 1975·Nature·H J Carlisle, M L Laudenslager
Apr 24, 2001·The Science of the Total Environment·K KallioT Pyhälahti

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Citations

Oct 24, 2006·Environmental Monitoring and Assessment·Hongtao DuanZongming Wang
Sep 25, 2007·Environmental Monitoring and Assessment·Saku AnttilaPetri Pellikka
Dec 11, 2008·Environmental Monitoring and Assessment·Diofantos G Hadjimitsis, Chris Clayton
Nov 13, 2009·Environmental Monitoring and Assessment·Hongtao DuanBai Zhang
Feb 23, 2013·Environmental Monitoring and Assessment·Brendan J HicksSalman Ashraf
Apr 24, 2001·The Science of the Total Environment·K KallioT Pyhälahti
Apr 24, 2001·The Science of the Total Environment·P HärmäS Koponen
Jul 23, 2003·The Science of the Total Environment·R J VosB W Ibelings
Sep 25, 2017·Environmental Science and Pollution Research International·Di ZhangYuh-Shan Ho

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