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Nowcasting SAF. Validation of AVHRR cloud products: Visiting scientist report
National Institute ofMeteorology and Hydrology, Romania.
SMHI, Core Services.ORCID iD: 0000-0003-0960-1622
2001 (English)Report (Other academic)
Abstract [en]

The main objective of this study was to find the situations when the present implementation of the Cloud Mask and Cloud Type models are not able to correctly classify the cloud scenes or the surface features and to describe under which circumstances this occurs.

The method chosen was to campare the mode! output, i.e. the cloud type classification with the subjective, human interpretation of the satellite images resulting in cloud type. Until now, such a method has not been used in the validation of the CT and CMa products.

More than 600 pairs of Cloud Type Classification images and AVHRR 5 bands images and RGB combinations of them were analyzed in order to get information on the behavior of the Cloud Type Mode! in summer and winter conditions. In about 145 cases, the human interpreted cloud type was found to show significant differences requiring a more thorough analysis. It has been found that 8 classes of clouds in summer conditions (August 2000) and 11 classes in winter conditions (February-March 2001) were classified as other cloud types when compared to the outcome of the subjective analysis.

Place, publisher, year, edition, pages
SMHI , 2001. , p. 27
Series
Meteorology, ISSN 0283-7730 ; 97
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
URN: urn:nbn:se:smhi:diva-2221Local ID: Meteorologi, Rapporter, Serie MeteorologiOAI: oai:DiVA.org:smhi-2221DiVA, id: diva2:947514
Available from: 2001-03-12 Created: 2016-07-08 Last updated: 2020-05-04Bibliographically approved

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Dybbroe, Adam

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf