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Determination of the bulk temperature from NOAA/AVHRR satellite data in a midlatitude lake

Thiemann, Sabine and Schiller, H. (2003) Determination of the bulk temperature from NOAA/AVHRR satellite data in a midlatitude lake. Journal of Applied Earth Observation and Geoinformation, 4 (4), pp. 339-349.

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Official URL: http://authors.elsevier.com/sd/article/S0303243403000217

Abstract

The spatial and temporal variability of the bulk temperature gives important insights into biological and hydrodynamic processes. However, standard algorithms for satellite data only provide information of the surface temperature. The comparison of current and new split-window coefficients applied on NOAA-14/AVHRR brightness temperatures of Lake Constance showed that a regional adaption was most promising. To derive the bulk temperature information, a priori progression from a weather station was included into the AVHRR analysis. Among the weather is data, the mean temperature of the three preceding days and the day of the year were the most relevant additional information. By a multiple regression approach the bulk temperature in the upper 4 m of Lake Constance could be determined with an accuracy of ±1.20 °C. The training of a neural network improved the determination of the bulk temperature to ±1.04 °C. An extended field campaign demonstrated that the algorithm is also applicable to other sensors with the same spectral band settings (in this case NOAA-16/AVHRR) with an acceptable error and that it is equally accurate over the entire lake.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:Determination of the bulk temperature from NOAA/AVHRR satellite data in a midlatitude lake
Authors:
AuthorsInstitution or Email of Authors
Thiemann, SabineUNSPECIFIED
Schiller, H.UNSPECIFIED
Date:2003
Journal or Publication Title:Journal of Applied Earth Observation and Geoinformation
Volume:4
Page Range:pp. 339-349
Status:Published
Keywords:Bulk temperature, AVHRR, Neural Networks, Lake
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Deposited By: Cornelia Roehl
Deposited On:26 Jun 2007
Last Modified:06 Jan 2010 22:19

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