Article

 

Estimation of area-averaged moisture flux Public Deposited

Analytics

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/8049g681s

Descriptions

Attribute NameValues
Creator
Abstract
  • Toward the goal of predicting area-averaged evapotranspiration, the evaporative fraction is modelled in terms of surface radiation temperature, air temperature, solar zenith angle, Normalized Difference of the Vegetation Index and albedo. Previous relationships break down when applied simultaneously to a variety of surfaces. The zenith angle is required to account for the influence of shaded ground on the remotely sensed surface radiation temperatures. The model of evaporative fraction is developed from Canadian Twin Otter aircraft data from the BOReal Ecosystem-Atmosphere Study and the California Ozone Deposition Experiment. The model consists of separate submodels for active agriculture, forested surfaces, bare soil/senescent vegetation and water surfaces. These broad land-use groups are effectively determined from remotely sensed red and near-infrared reflectances. The area-averaged moisture flux predicted by the model compares favourably with that computed from independent data over forested surfaces. However, the model performs poorly over bare soil/senescent surfaces, and data for a wider variety of surface conditions are required before the generality of the model can be evaluated.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Mahrt, L., Kotwica, K., Sun, J., MacPherson, J. I., & Desjardins, R. L. (1998). Estimation of area-averaged moisture flux. Quarterly Journal of the Royal Meteorological Society, 124, 2793-2815.
Journal Title
Journal Volume
  • 124
Keyword
Rights Statement
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Digital Production(digitalproduc@gmail.com) on 2010-10-05T23:45:25Z (GMT) No. of bitstreams: 1 Mahrt_et_al_Q_J_R_Meteorol_Soc_1998.pdf: 1408180 bytes, checksum: 8e711e9e01a71d6a69f0c3c039456756 (MD5)
  • description.provenance : Submitted by Eric Vanderwall (ewscanner@gmail.com) on 2010-09-17T17:35:42Z No. of bitstreams: 1 Mahrt_et_al_Q_J_R_Meteorol_Soc_1998.pdf: 1408180 bytes, checksum: 8e711e9e01a71d6a69f0c3c039456756 (MD5)
  • description.provenance : Made available in DSpace on 2010-10-05T23:45:25Z (GMT). No. of bitstreams: 1 Mahrt_et_al_Q_J_R_Meteorol_Soc_1998.pdf: 1408180 bytes, checksum: 8e711e9e01a71d6a69f0c3c039456756 (MD5) Previous issue date: 1998

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
Mahrt_et_al_Q_J_R_Meteorol_Soc_1998.pdf 2017-07-21 Public