Near-ground cooling efficacies of trees and high-albedo surfaces Page: 4 of 164
This thesis or dissertation is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
Table of Contents
1 Introduction............................................................................................................1
1 .1 M o tiv atio n ..........................................................................................................1
1.2 Past Studies: Finite-Difference Simulations of Cities and Buildings ................1
1.2.1 Boundary Layer, Urban Canyon, and Building Energy Models..................1
1.2.2 Lack of Generality to Simulation Results ....................................................2
1.3 New Approach: Microscale Physical Models and Measurements.....................2
1 .3 .1 Q u e stio n s......................................................................................................2
1.3 .2 In v estig atio n s ...............................................................................................2
1 .4 P h y sic s ...............................................................................................................3
1.4.1 Effects of Ground Albedo and Shading on Near-Ground Objects ..............3
1.4.2 Effects of Planting a Tree on the Heating of Near-Ground Air...................4
1.4.3 Predictors of Signs and Magnitudes of Near-Ground Effects .....................5
1.5 E x p erim en t.........................................................................................................5
1.6 T h esis O verview ................................................................................................6
1.6 .1 T h e B ig P icture ............................................................................................6
1.6.2 Topic One: Near-Ground Objects ................................................................6
1.6.3 Topic Two: Tree-Induced Changes in Convection......................................6
1.6.4 Appendices: Background Information .........................................................6
1 .7 N e w A rt..............................................................................................................7
1 .7 .1 T h e o ry ..........................................................................................................7
1.7 .2 E xp erim en t ...................................................................................................7
2 Literature Review ..................................................................................................8
2.1 Simulations and Measurements of Daytime Summer Urban Heat Islands........8
2.1.1 Benefits of Increasing Albedo and Vegetative Cover..................................8
2.1.2 Models of Climate and Building Energy .....................................................8
2.2 Studies of Near-Ground Object Heat Transfer ..................................................9
2.2.1 H um an C lim ate M odels ...............................................................................9
2.2.2 Elementary Heat Transfer Relations ............................................................9
2.2.3 Temperatures at and Near the Ground .........................................................9
2.3 Studies of Tree Energy Balances and Water Relations .....................................9
2.3.1 L eaf E vapotranspiration ...............................................................................9
2.3.2 C anopy R adiation M odels..........................................................................10
2.3.3 A ir Flow A round a Tree.............................................................................10
2.3.4 W ater Loss M easurem ents .........................................................................10
3 Near-Ground Object Model................................................................................12
3 .1 O v erv iew ..........................................................................................................12
3.2 Environmental Temperature and Object-To-Air Convection ..........................12
3 .2 .1 H eat F lo w s .................................................................................................12
3.2.2 Magnitudes of Temperature and Convection.............................................13iii
Upcoming Pages
Here’s what’s next.
Search Inside
This document can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Thesis Or Dissertation.
Levinson, R.M. Near-ground cooling efficacies of trees and high-albedo surfaces, thesis or dissertation, May 1, 1997; California. (https://digital.library.unt.edu/ark:/67531/metadc716113/m1/4/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.