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Sources of uncertainty in vicarious calibration: understanding calibration target reflectance

Record type: Conference or Workshop Item (Paper)

A field experiment investigated the hypothesis that the nadir reflectance of calibration surface substrates (asphalt and concrete) remains stable over a range of time-scales. Measurable differences in spectral reflectance factors were found over periods as short as 30 minutes. Multi-date reflectance measurements were compared using ANOVA and found to differ significantly (p = 0.001). Surface reflectance showed a relationship with the relative proportion of diffuse irradiance, over periods when solar zenith changes were minimal. These findings illustrate the anisotropic nature of calibration surfaces, and place emphasis on the need for collection of diffuse and global irradiance measurements at the time of remotely-sensed data acquisition.

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Citation

Anderson, K., Milton, E.J. and Rollin, E.M. (2003) Sources of uncertainty in vicarious calibration: understanding calibration target reflectance In IGARSS '03 Proceedings of the International Geoscience and Remote Sensing Symposium, 21-25 July 2003, Toulouse, France. Institute of Electrical and Electronics Engineers (IEEE)., pp. 2072-2074.

More information

Published date: 2003
Additional Information: CD-ROM
Venue - Dates: IGARSS '03 Proceedings of the International Geoscience and Remote Sensing Symposium, 2003-07-21 - 2003-07-25

Identifiers

Local EPrints ID: 5011
URI: http://eprints.soton.ac.uk/id/eprint/5011
PURE UUID: 21405c53-609b-463e-9eeb-d09cf8e0aa2d

Catalogue record

Date deposited: 21 May 2004
Last modified: 17 Jul 2017 17:15

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Contributors

Author: K. Anderson
Author: E.J. Milton
Author: E.M. Rollin

University divisions


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