Some features of the ASCE Shopping cart and login features of the website will be down for maintenance on Sunday, June 16th, 2024, beginning at 12:00 A.M. ET and ending at 6:00 A.M. ET. During this time if you need immediate assistance at 1-800-548-2723 or [email protected].

Chapter
Apr 26, 2012

An Artificial Dry Reference Surface for Predicting Canopy Temperature Dynamics from a Moving Irrigation System

Publication: World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns

Abstract

Elevated crop canopy temperatures are a useful indicator of water stress. Single-time-of-day canopy temperatures of large field areas can be detected by infrared thermometers (IRTs) mounted on center pivots or lateral move irrigation systems. Determining canopy temperatures at other times of day from these measurements requires a method of estimating diurnal canopy temperature dynamics due to changing environmental conditions from a one time-of-day measurement. This has been shown to be possible by using canopy temperature dynamics measured with an CRT in a stationary reference location in another part of the field to scale the one time-of-day measurement. It has also been shown that the water stress condition of the reference location has little effect on the errors of the predicted canopy temperatures. It would simplify instrumentation and programming if the reference temperature dynamics could be collected from a location other than the field, such as on the moving irrigation system itself. An artificial dry reference surface was tested to determine whether it could be used as the reference surface to capture the canopy temperature dynamics. The surface consisted of a large artificial plant leaf, cut to fit and mounted in a cross-stitch hoop. This was located in a stationary position next to the field being studied. The temperatures of the artificial reference surface were measured with IRTs mounted both above and below it. Canopy temperature dynamics predicted from one time-of-day measurements using the artificial dry reference surface were compared to those predicted using living and transpiring canopy temperature measurements in a stationary location in the field. The absolute mean errors of the predicted diurnal curve from the actual measured curves were compared. The errors when using the artificial dry reference surface were significantly worse than those of the living crop. These errors were possibly due to the fact that the artificial dry reference surface was not located amongst the living canopy. Future experiments need to be done with the artificial dry reference surface located on the moving irrigation system but near or amongst the living canopy.

Get full access to this chapter

View all available purchase options and get full access to this chapter.

Information & Authors

Information

Published In

Go to World Environmental and Water Resource Congress 2006
World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns
Pages: 1 - 10

History

Published online: Apr 26, 2012

Permissions

Request permissions for this article.

ASCE Technical Topics:

Authors

Affiliations

R. Troy Peters [email protected]
Washington State University, Irrigated Agriculture Research and Extension Center, 24106 N. Bunn Rd., Prosser WA, 99350-8694. E-mail: [email protected]
Steven R. Evett [email protected]
USDA-ARS, P.O. Drawer 10, Bushland, TX 79012. E-mail: [email protected]

Metrics & Citations

Metrics

Citations

Download citation

If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.

View Options

Get Access

Access content

Please select your options to get access

Log in/Register Log in via your institution (Shibboleth)
ASCE Members: Please log in to see member pricing

Purchase

Save for later Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.

Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
ASCE Library Card (5 downloads)
$105.00
Add to cart
ASCE Library Card (20 downloads)
$280.00
Add to cart
Buy Single Paper
$35.00
Add to cart

Get Access

Access content

Please select your options to get access

Log in/Register Log in via your institution (Shibboleth)
ASCE Members: Please log in to see member pricing

Purchase

Save for later Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.

Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
ASCE Library Card (5 downloads)
$105.00
Add to cart
ASCE Library Card (20 downloads)
$280.00
Add to cart
Buy Single Paper
$35.00
Add to cart

Media

Figures

Other

Tables

Share

Share

Copy the content Link

Share with email

Email a colleague

Share