A study of the relation between radar and raingage indicated rainfall over northern California Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/8623j217n

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The WSR-57 weather radar operated by the National Weather Service at Sacramento, California, plus a network of precipitation gages provided data for this comparison of radar reflectivity with precipitation rates. Located in a valley with mountains within range of the radar on three sides, this radar has varying sensitivity for precipitation rates as a result of the terrain effects. Variation in the terrain surrounding the radar has led to a very wide scatter in precipitation rates associated with any particular radar reflectivity. The radar failed to detect precipitation up to 77% of the time over the Coast Range at ranges greater than 100 nm. Linear regression analyses revealed very poor correlation between the raingage indicated precipitation rate and the radar reflectivity. These analyses resulted in values of (R²), the coefficient of determination, ranging from zero as a minimum to only 0.502 as a maximum. Such results are generally much poorer than results obtained by others. The poor correlations and both overestimation and underestimation of rainfall resulted from factors such as range, terrain blocking, windward or leeward exposure, freezing level height, beam height and width, and the distribution of water vapor in the vertical.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-05-25T17:26:20Z (GMT) No. of bitstreams: 1 StremEricThomas1976.pdf: 1190962 bytes, checksum: 71c138e47cb20af3e66b1a99c4560034 (MD5)
  • description.provenance : Made available in DSpace on 2012-05-25T17:26:20Z (GMT). No. of bitstreams: 1 StremEricThomas1976.pdf: 1190962 bytes, checksum: 71c138e47cb20af3e66b1a99c4560034 (MD5) Previous issue date: 1975-06-30
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-05-15T18:17:04Z (GMT) No. of bitstreams: 1 StremEricThomas1976.pdf: 1190962 bytes, checksum: 71c138e47cb20af3e66b1a99c4560034 (MD5)
  • description.provenance : Submitted by Kaylee Patterson (patterka@onid.orst.edu) on 2012-05-07T19:16:33Z No. of bitstreams: 1 StremEricThomas1976.pdf: 1190962 bytes, checksum: 71c138e47cb20af3e66b1a99c4560034 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items