Ms. He Chen Profile

He Chen

at Tsinghua Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 21 November 2012 Paper

Remote sensing based continuous estimation of regional evapotranspiration by improved SEBS model

He Chen, Dawen Yang

Proceedings Volume 8524, 85240M (2012) https://doi.org/10.1117/12.977259

KEYWORDS: Remote sensing, Tantalum, Atmospheric modeling, Heat flux, Meteorology, Radon, Satellites, Environmental sensing, Clouds, Temperature metrology

Read Abstract +

Remote sensing (RS) has been considered as the most promising tool for evapotranspiration (ET) estimation at regional scale. However, large errors implied in the process of extrapolating instantaneous latent heat flux derived at satellite over-passing time to daily ET inevitably constrains the application of RS models. In this study, we modified Surface Energy Balance System (SEBS) model by replacing the instantaneous inputs with daily representative parameters to estimate daily ET directly. A further strategy was added to the model for estimating ET during cloud-contaminate period using moving window averaged Bowen ratio. One merit of the improved model is that the calculation of daily ET can be avoided by means of instantaneous input from ground observations is avoided, which is insufficient at regional scale from meteorological stations. The second merit is the model circumvents the scaling up process implied in the traditional methods. Another merit is that the cloud-free constrain of ET estimation based on RS data is circumvented through a gap filling approach, which makes continuous ET estimation possible. For the purpose of model performance evaluation, the model was tested at the Weishan flux site in the North China Plain from 2006 to 2007. Two-year continuous simulation results show that the model has a good performance for daily ET estimation with a deterministic coefficient of 0.61 and a bias of 3%. Then the model was applied to the 5711 km² Weishan Irrigation District at 1-km spatial resolution.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years