[Keyword='EVAPOTRANSPIRATION']
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SAFARI 2000 MODIS WATER AND HEAT FLUXES, MAUN, BOTSWANA, DRY SEASON 2001 Entry ID: s2k_modis_h2o_flux |
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Summary
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Abstract:
A physically-based model, Energy: Surface Towards Atmosphere (ESTA), was used to model and map the energy and water balances of a heterogeneous land surface in a savanna environment on the southern fringe of the Okavango Delta, near Maun, Botswana. ESTA is governed by remotely sensed values of surface temperature, reflection, and vegetation density.Surface reflectance data from the MODIS sensor aboard the Terra satellite were obtained for the Okavango Delta region for September of 2001. Use was made of the visible, near infrared, and thermal bands of MOD09, a configuration that allows discrimination of broad-band surface albedo, vegetation indices, and surface temperature. A crude land cover classification image was created to provide vegetation canopy heights for the estimation of aerodynamic resistance. The original spatial resolution of the visible and near infrared imagery of 250 and 500 meters, respectively, was reduced to 1 km to be compatible with the resolution of the thermal imagery. Input to the model also includes near-surface meteorological observations from the Maun flux tower.Net radiometer data from the Maun station were used for crude atmospheric corrections and for validating net radiation estimates. Soil heat flux plates, also in place at the tower site, in combination with an eddy-correlation system, were used to validate the model output for soil and turbulent heat fluxes. This data set consists of 3 separate gridded binary image files representing daily evapotranspiration (mm/day) for the Okavango Delta region for September 2, September 13, and September 29, 2001.
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Link:
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Link: VIEW RELATED INFORMATION Description: SAFARI 2000 MODIS WATER AND HEAT FLUXES, MAUN, BOTSWANA, DRY SEASON 2001 |
Geographic Coverage
| N: -17.9946 | S: -21.0004 | E: 24.5004 | W: 21.4946 |
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Data Set Citation
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Dataset Originator/Creator:
TIMMERMANS, W.J.
Dataset Title: SAFARI 2000 MODIS WATER AND HEAT FLUXES, MAUN, BOTSWANA, DRY SEASON 2001 Dataset Release Date: 2004 Dataset Release Place: Oak Ridge, Tennessee, U.S.A. Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center Data Presentation Form: Online Files Dataset DOI: doi:10.3334/ORNLDAAC/762 Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=762&term2attribut... |
Temporal Coverage
| Start Date: 2001-09-02 |
| Stop Date: 2001-09-29 |
Location Keywords
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CONTINENT
> AFRICA
> SOUTHERN AFRICA
> BOTSWANA
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Science Keywords
| BIOSPHERE >TERRESTRIAL ECOSYSTEMS >WETLANDS [Definition] |
ISO Topic Category
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BIOTA
INLAND WATERS |
Platform
| TERRA >Earth Observing System, TERRA (AM-1) [Information] |
Instrument
| MODIS >Moderate-Resolution Imaging Spectroradiometer [Information] |
Project
| EOSDIS >Earth Observing System Data Information System [Information] |
| ESIP >Earth Science Information Partners Program [Information] |
| SAFARI 2000 >The Southern African Regional Science Initiative Project [Information] |
| CWIC >CEOS WGISS Integrated Catalog [Information] |
Keywords
| MOD09 |
| MODIS |
| TERRA |
| EOSDIS |
| LAND COVER |
| SAFARI 2000 |
| WATER BALANCE |
| SOIL HEAT FLUX |
| SURFACE ALBEDO |
| OKAVANGO DELTA |
| VEGETATION INDEX |
| SATELLITE IMAGERY |
| EVAPOTRANSPIRATION |
| SENSIBLE HEAT FLUX |
| SURFACE TEMPERATURE |
| SURFACE REFLECTANCE |
| TURBULENT HEAT FLUX |
| ENERGY: SURFACE TOWARDS ATMOSPHERE (ESTA) MODEL |
Data Set Progress
| COMPLETE |
Data Center
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THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)
[Information]
Data Center URL: http://daac.ornl.gov/ Dataset ID: 762
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Personnel
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WIM
TIMMERMANS Role: TECHNICAL CONTACT Phone: +31 (0)53 4874488 Fax: +31 (0)53 4874336 Email: timmermans at itc.nl |
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ORNL DAAC USER SERVICES OFFICE Role: DIF AUTHOR Phone: (865) 574-7447 Email: uso at daac.ornl.gov Contact Address: ORNL DAAC User Services Office Oak Ridge National Laboratory City: Oak Ridge Province or State: TN Postal Code: 37831-6407 Country: USA |
Creation and Review Dates
DIF Creation Date:
2004-11-01
Last DIF Revision Date:
2010-09-08
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