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The MERIS terrestrial chlorophyll index

The MERIS terrestrial chlorophyll index
The MERIS terrestrial chlorophyll index
The long wavelength edge of the major chlorophyll absorption feature in the spectrum of a vegetation canopy moves to longer wavelengths with an increase in chlorophyll content. The position of this red-edge has been used successfully to estimate, by remote sensing, the chlorophyll content of vegetation canopies. Techniques used to estimate this red-edge position (REP) have been designed for use on small volumes of continuous spectral data rather than the large volumes of discontinuous spectral data recorded by contemporary satellite spectrometers. Also, each technique produces a different value of REP from the same spectral data and REP values are relatively insensitive to chlorophyll content at high values of chlorophyll content. This paper reports on the design and indirect evaluation of a surrogate REP index for use with spectral data recorded at the standard band settings of the Medium Resolution Imaging Spectrometer (MERIS). This index, termed the MERIS terrestrial chlorophyll index (MTCI), was evaluated using model spectra, field spectra and MERIS data. It was easy to calculate (and so can be automated), was correlated strongly with REP but unlike REP was sensitive to high values of chlorophyll content. As a result this index became an official MERIS level-2 product of the European Space Agency in March 2004. Further direct evaluation of the MTCI is proposed, using both greenhouse and field data.
chlorophyll, red-edge position (REP), remote sensing, vegetation canopy
0143-1161
5403-5413
Dash, J.
51468afb-3d56-4d3a-aace-736b63e9fac8
Curran, P.J.
3f5c1422-c154-4533-9c84-f2afb77df2de
Dash, J.
51468afb-3d56-4d3a-aace-736b63e9fac8
Curran, P.J.
3f5c1422-c154-4533-9c84-f2afb77df2de

Dash, J. and Curran, P.J. (2004) The MERIS terrestrial chlorophyll index. International Journal of Remote Sensing, 25 (23), 5403-5413. (doi:10.1080/0143116042000274015).

Record type: Article

Abstract

The long wavelength edge of the major chlorophyll absorption feature in the spectrum of a vegetation canopy moves to longer wavelengths with an increase in chlorophyll content. The position of this red-edge has been used successfully to estimate, by remote sensing, the chlorophyll content of vegetation canopies. Techniques used to estimate this red-edge position (REP) have been designed for use on small volumes of continuous spectral data rather than the large volumes of discontinuous spectral data recorded by contemporary satellite spectrometers. Also, each technique produces a different value of REP from the same spectral data and REP values are relatively insensitive to chlorophyll content at high values of chlorophyll content. This paper reports on the design and indirect evaluation of a surrogate REP index for use with spectral data recorded at the standard band settings of the Medium Resolution Imaging Spectrometer (MERIS). This index, termed the MERIS terrestrial chlorophyll index (MTCI), was evaluated using model spectra, field spectra and MERIS data. It was easy to calculate (and so can be automated), was correlated strongly with REP but unlike REP was sensitive to high values of chlorophyll content. As a result this index became an official MERIS level-2 product of the European Space Agency in March 2004. Further direct evaluation of the MTCI is proposed, using both greenhouse and field data.

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More information

Submitted date: 16 June 2003
Published date: 10 December 2004
Keywords: chlorophyll, red-edge position (REP), remote sensing, vegetation canopy
Organisations: Remote Sensing & Spatial Analysis

Identifiers

Local EPrints ID: 15384
URI: http://eprints.soton.ac.uk/id/eprint/15384
ISSN: 0143-1161
PURE UUID: 4031fcc6-39fb-4478-8b79-7f1e06234e81
ORCID for J. Dash: ORCID iD orcid.org/0000-0002-5444-2109

Catalogue record

Date deposited: 15 Apr 2005
Last modified: 18 Feb 2021 17:01

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Contributors

Author: J. Dash ORCID iD
Author: P.J. Curran

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