東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Measurements and modeling of the Gre...

Martin, William John.

Linked to FindBook

Google Book

Amazon

博客來

Measurements and modeling of the Great Plains low-level jet.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Measurements and modeling of the Great Plains low-level jet./
Author:	Martin, William John.
Description:	243 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1291.
Contained By:	Dissertation Abstracts International64-03B.
Subject:	Physics, Atmospheric Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3082922

Measurements and modeling of the Great Plains low-level jet.
Martin, William John.

Measurements and modeling of the Great Plains low-level jet. - 243 p.

Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1291.

Thesis (Ph.D.)--The University of Oklahoma, 2003.

This dissertation describes a project to elucidate the turbulent and momentum structure of the Great Plains Low-Level Jet (LLJ), primarily by the use of Doppler radar. Simple theoretical and numerical models of the LLJ are developed which are extensions of the Blackadar inertial oscillation theory. The results of this research are generally consistent with this theory. Turbulence is central to this theory and the core of this research is measurements of turbulence and wind speeds in actual LLJs, in addition to simple models. The use of clear-air Doppler radar data appropriate for LLJ study, requires an understanding of the nature of the clear-air echo. It is important to avoid migrating birds as radar targets as they are a large potential source of velocity bias. For this reason, considerable attention is given to the source of clear-air echo, and a couple cases are analyzed with high-resolution radars. This work strongly implies that the clear-air echo for the cases considered was primarily insects. This contrasts with much recent work (reviewed here) supporting the theory that migrating birds are a major source of clear-air echo. Using radar data believed to be mostly free from migrating bird contamination, this work describes and develops data reduction and quality control techniques so that high-quality profiles and time-height cross-sections can be routinely obtained. These techniques include dealiasing, minimizing the impact of ground clutter bias, obtaining a measure of large scale turbulence from a VAD, and using spectral width information to extract both a measure of small-scale turbulence as well as wind shear.Subjects--Topical Terms:

1019431
Physics, Atmospheric Science.

Measurements and modeling of the Great Plains low-level jet.
LDR:02489nmm 2200265 4500 001 1810263
005 20040126131516.5
008 130610s2003 eng d
035 $a (UnM)AAI3082922
035 $a AAI3082922
040 $a UnM $c UnM
100 1 $a Martin, William John. $3 1899883
245 1 0 $a Measurements and modeling of the Great Plains low-level jet.
300 $a 243 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1291.
500 $a Adviser: Alan Shapiro.
502 $a Thesis (Ph.D.)--The University of Oklahoma, 2003.
520 $a This dissertation describes a project to elucidate the turbulent and momentum structure of the Great Plains Low-Level Jet (LLJ), primarily by the use of Doppler radar. Simple theoretical and numerical models of the LLJ are developed which are extensions of the Blackadar inertial oscillation theory. The results of this research are generally consistent with this theory. Turbulence is central to this theory and the core of this research is measurements of turbulence and wind speeds in actual LLJs, in addition to simple models. The use of clear-air Doppler radar data appropriate for LLJ study, requires an understanding of the nature of the clear-air echo. It is important to avoid migrating birds as radar targets as they are a large potential source of velocity bias. For this reason, considerable attention is given to the source of clear-air echo, and a couple cases are analyzed with high-resolution radars. This work strongly implies that the clear-air echo for the cases considered was primarily insects. This contrasts with much recent work (reviewed here) supporting the theory that migrating birds are a major source of clear-air echo. Using radar data believed to be mostly free from migrating bird contamination, this work describes and develops data reduction and quality control techniques so that high-quality profiles and time-height cross-sections can be routinely obtained. These techniques include dealiasing, minimizing the impact of ground clutter bias, obtaining a measure of large scale turbulence from a VAD, and using spectral width information to extract both a measure of small-scale turbulence as well as wind shear.
590 $a School code: 0169.
650 4 $a Physics, Atmospheric Science. $3 1019431
650 4 $a Geophysics. $3 535228
690 $a 0608
690 $a 0373
710 2 0 $a The University of Oklahoma. $3 1021915
773 0 $t Dissertation Abstracts International $g 64-03B.
790 1 0 $a Shapiro, Alan, $e advisor
790 $a 0169
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3082922