Directional radiative temperature observations for improvement of land-atmosphere interactions

Z. Su; J. M. Wang; J. Wen; L. Jia; M. Menenti

doi:10.1109/IGARSS.1999.773592

Directional radiative temperature observations for improvement of land-atmosphere interactions

Z. Su^*, J. M. Wang, J. Wen, L. Jia, M. Menenti

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

Along with a brief account of the characteristics of the Advanced Along Track Scanning Radiometer (AATSR) data onboard of the ENVISAT satellite, field observations of directional radiometric temperatures are analysed to examine the possibilities of using AATSR data to improve the estimates of the energy and water balances on land surfaces, especially for the purpose of numerical weather forecasts and climate research. In the summer of 1998, we have participated in the Inner Mongolia Grassland-Atmosphere Surface Study (IMGRASS) campaign. Apart from many other measurements (tower, eddy correlation, thethered-balloon, total and spectral radiation, soil temperature gradients, etc.), intensive measurements were carried out for directional radiative temperatures. Preliminary analysis of the data indicates that the difference in radiative temperature between different view angles is primarily caused by the vegetation fraction viewed. The difference between nadir and 23 degree is around 0.5 K, and that between nadir and 52 degree reaches 1.5 to 2 K dependent on the time of the measurements. This finding is similar for two independent measurement set-ups at two separate locations, both having similar sparse grass covers of around 10 cm high, and a leaf area index of 0.5.

Original language	English
Title of host publication	IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99
Place of Publication	Hamburg
Publisher	IEEE
Pages	643-645
Number of pages	3
ISBN (Print)	0-7803-5207-6
DOIs	https://doi.org/10.1109/IGARSS.1999.773592
Publication status	Published - 1 Jul 1999
Externally published	Yes
Event	IEEE International Geoscience and Remote Sensing Symposium, IGARSS 1999: Remote Sensing of the Systems Earth - A Challenge for the 21st Century - Hamburg, Germany Duration: 28 Jun 1999 → 2 Jul 1999

Conference

Conference	IEEE International Geoscience and Remote Sensing Symposium, IGARSS 1999
Abbreviated title	IGARSS 1999
Country/Territory	Germany
City	Hamburg
Period	28/06/99 → 2/07/99

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10.1109/IGARSS.1999.773592

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@inproceedings{da5e74f103fc413a93f6b2fc9abc95f9,

title = "Directional radiative temperature observations for improvement of land-atmosphere interactions",

abstract = "Along with a brief account of the characteristics of the Advanced Along Track Scanning Radiometer (AATSR) data onboard of the ENVISAT satellite, field observations of directional radiometric temperatures are analysed to examine the possibilities of using AATSR data to improve the estimates of the energy and water balances on land surfaces, especially for the purpose of numerical weather forecasts and climate research. In the summer of 1998, we have participated in the Inner Mongolia Grassland-Atmosphere Surface Study (IMGRASS) campaign. Apart from many other measurements (tower, eddy correlation, thethered-balloon, total and spectral radiation, soil temperature gradients, etc.), intensive measurements were carried out for directional radiative temperatures. Preliminary analysis of the data indicates that the difference in radiative temperature between different view angles is primarily caused by the vegetation fraction viewed. The difference between nadir and 23 degree is around 0.5 K, and that between nadir and 52 degree reaches 1.5 to 2 K dependent on the time of the measurements. This finding is similar for two independent measurement set-ups at two separate locations, both having similar sparse grass covers of around 10 cm high, and a leaf area index of 0.5.",

author = "Z. Su and Wang, {J. M.} and J. Wen and L. Jia and M. Menenti",

year = "1999",

month = jul,

day = "1",

doi = "10.1109/IGARSS.1999.773592",

language = "English",

isbn = "0-7803-5207-6",

pages = "643--645",

booktitle = "IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99",

publisher = "IEEE",

note = "IEEE International Geoscience and Remote Sensing Symposium, IGARSS 1999 : Remote Sensing of the Systems Earth - A Challenge for the 21st Century, IGARSS 1999 ; Conference date: 28-06-1999 Through 02-07-1999",

}

Su, Z, Wang, JM, Wen, J, Jia, L & Menenti, M 1999, Directional radiative temperature observations for improvement of land-atmosphere interactions. in IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99. IEEE, Hamburg, pp. 643-645, IEEE International Geoscience and Remote Sensing Symposium, IGARSS 1999, Hamburg, Germany, 28/06/99. https://doi.org/10.1109/IGARSS.1999.773592

TY - GEN

T1 - Directional radiative temperature observations for improvement of land-atmosphere interactions

AU - Su, Z.

AU - Wang, J. M.

AU - Wen, J.

AU - Jia, L.

AU - Menenti, M.

PY - 1999/7/1

Y1 - 1999/7/1

N2 - Along with a brief account of the characteristics of the Advanced Along Track Scanning Radiometer (AATSR) data onboard of the ENVISAT satellite, field observations of directional radiometric temperatures are analysed to examine the possibilities of using AATSR data to improve the estimates of the energy and water balances on land surfaces, especially for the purpose of numerical weather forecasts and climate research. In the summer of 1998, we have participated in the Inner Mongolia Grassland-Atmosphere Surface Study (IMGRASS) campaign. Apart from many other measurements (tower, eddy correlation, thethered-balloon, total and spectral radiation, soil temperature gradients, etc.), intensive measurements were carried out for directional radiative temperatures. Preliminary analysis of the data indicates that the difference in radiative temperature between different view angles is primarily caused by the vegetation fraction viewed. The difference between nadir and 23 degree is around 0.5 K, and that between nadir and 52 degree reaches 1.5 to 2 K dependent on the time of the measurements. This finding is similar for two independent measurement set-ups at two separate locations, both having similar sparse grass covers of around 10 cm high, and a leaf area index of 0.5.

AB - Along with a brief account of the characteristics of the Advanced Along Track Scanning Radiometer (AATSR) data onboard of the ENVISAT satellite, field observations of directional radiometric temperatures are analysed to examine the possibilities of using AATSR data to improve the estimates of the energy and water balances on land surfaces, especially for the purpose of numerical weather forecasts and climate research. In the summer of 1998, we have participated in the Inner Mongolia Grassland-Atmosphere Surface Study (IMGRASS) campaign. Apart from many other measurements (tower, eddy correlation, thethered-balloon, total and spectral radiation, soil temperature gradients, etc.), intensive measurements were carried out for directional radiative temperatures. Preliminary analysis of the data indicates that the difference in radiative temperature between different view angles is primarily caused by the vegetation fraction viewed. The difference between nadir and 23 degree is around 0.5 K, and that between nadir and 52 degree reaches 1.5 to 2 K dependent on the time of the measurements. This finding is similar for two independent measurement set-ups at two separate locations, both having similar sparse grass covers of around 10 cm high, and a leaf area index of 0.5.

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U2 - 10.1109/IGARSS.1999.773592

DO - 10.1109/IGARSS.1999.773592

M3 - Conference contribution

AN - SCOPUS:0033327540

SN - 0-7803-5207-6

SP - 643

EP - 645

BT - IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99

PB - IEEE

CY - Hamburg

T2 - IEEE International Geoscience and Remote Sensing Symposium, IGARSS 1999

Y2 - 28 June 1999 through 2 July 1999

ER -

Directional radiative temperature observations for improvement of land-atmosphere interactions

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