The University of Southampton
University of Southampton Institutional Repository

Estimation of surface long wave radiation and broadband emissivity using Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature/emissivity products

Estimation of surface long wave radiation and broadband emissivity using Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature/emissivity products
Estimation of surface long wave radiation and broadband emissivity using Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature/emissivity products
The Moderate Resolution Imaging Spectroradiometer (MODIS) global land surface temperature (LST)/emissivity products supply daily, 8-day, and monthly global temperature and narrowband emissivity data. This article uses these products to calculate the surface long wave radiation of natural objects such as sand, soil, vegetation, etc., based on the Planck function and the Stefan-Boltzmann law. The results show that using the narrowband emissivity of a single band instead of the broadband emissivity results in large errors of up to 100 W m?2 of the calculated long wave radiation. A method to calculate broadband emissivity in the entire TIR spectral region from the narrowband emissivities of the MODIS bands (29, 31, and 32) in the thermal infrared region is proposed. Using the broadband emissivity, the surface long wave radiation could be calculated to an accuracy better than 6 W m?2 in the temperature region of 240–330 K, with a standard deviation of 1.22 W m?2, and a maximum error of 6.05 W m?2 (not considering the uncertainty associated with the MODIS LST/emissivity products themselves). The satellite estimated broadband emissivity was compared with 3-year (January 2001 to December 2003) ground-based measurements of emissivity at Gaize (32.30°N, 84.06°E, 4420 m) on the western Tibetan Plateau. The results show that the broadband emissivity calculated from MODIS narrowband emissivities by this method matches well the ground measurements, with a standard deviation of 0.0085 and a bias of 0.0015.
long wave radiation, broadband emissivity, MODIS, land surface temperature
0148-0227
D11109
Wang, K-C.
652bd5cc-9406-4b59-9fde-6d314c8630b2
Wan, Z-M.
13768b20-2d15-47b4-b5fc-0915f9ee40d0
Wang, P-C.
8045865a-2a50-42e7-98b4-2c36138d71cc
Sparrow, M.
0a312725-a227-4199-8852-baf7a0869768
Liu, J-M.
67f07fd3-eb22-4c2f-937c-83f8dfed885f
Zhou, X-J.
2a707d83-95cc-42fa-a876-cb2a3c017de0
Haginoya, S.
a17c56d8-7026-469c-8323-c9a683e70bf7
Wang, K-C.
652bd5cc-9406-4b59-9fde-6d314c8630b2
Wan, Z-M.
13768b20-2d15-47b4-b5fc-0915f9ee40d0
Wang, P-C.
8045865a-2a50-42e7-98b4-2c36138d71cc
Sparrow, M.
0a312725-a227-4199-8852-baf7a0869768
Liu, J-M.
67f07fd3-eb22-4c2f-937c-83f8dfed885f
Zhou, X-J.
2a707d83-95cc-42fa-a876-cb2a3c017de0
Haginoya, S.
a17c56d8-7026-469c-8323-c9a683e70bf7

Wang, K-C., Wan, Z-M., Wang, P-C., Sparrow, M., Liu, J-M., Zhou, X-J. and Haginoya, S. (2005) Estimation of surface long wave radiation and broadband emissivity using Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature/emissivity products. Journal of Geophysical Research, 110 (D11), D11109. (doi:10.1029/2004JD005566).

Record type: Article

Abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) global land surface temperature (LST)/emissivity products supply daily, 8-day, and monthly global temperature and narrowband emissivity data. This article uses these products to calculate the surface long wave radiation of natural objects such as sand, soil, vegetation, etc., based on the Planck function and the Stefan-Boltzmann law. The results show that using the narrowband emissivity of a single band instead of the broadband emissivity results in large errors of up to 100 W m?2 of the calculated long wave radiation. A method to calculate broadband emissivity in the entire TIR spectral region from the narrowband emissivities of the MODIS bands (29, 31, and 32) in the thermal infrared region is proposed. Using the broadband emissivity, the surface long wave radiation could be calculated to an accuracy better than 6 W m?2 in the temperature region of 240–330 K, with a standard deviation of 1.22 W m?2, and a maximum error of 6.05 W m?2 (not considering the uncertainty associated with the MODIS LST/emissivity products themselves). The satellite estimated broadband emissivity was compared with 3-year (January 2001 to December 2003) ground-based measurements of emissivity at Gaize (32.30°N, 84.06°E, 4420 m) on the western Tibetan Plateau. The results show that the broadband emissivity calculated from MODIS narrowband emissivities by this method matches well the ground measurements, with a standard deviation of 0.0085 and a bias of 0.0015.

This record has no associated files available for download.

More information

Published date: 2005
Keywords: long wave radiation, broadband emissivity, MODIS, land surface temperature

Identifiers

Local EPrints ID: 20421
URI: http://eprints.soton.ac.uk/id/eprint/20421
ISSN: 0148-0227
PURE UUID: 0cb71005-71aa-4721-a15c-0443b3b9496c

Catalogue record

Date deposited: 24 Feb 2006
Last modified: 27 Apr 2022 04:19

Export record

Altmetrics

Contributors

Author: K-C. Wang
Author: Z-M. Wan
Author: P-C. Wang
Author: M. Sparrow
Author: J-M. Liu
Author: X-J. Zhou
Author: S. Haginoya

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×