Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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
A system for modelling solar radiation parameters with mesoscale spatial resolution
SMHI, Research Department, Atmospheric remote sensing.
SMHI, Research Department, Atmospheric remote sensing.
SMHI.
2001 (English)Report (Other academic)
Abstract [en]

Today, modern analysis systems synthesise meteorological data from a number of sources, e.g.\ round based SYNOP, satellites, radar, etc., into field information which enable us to model radiation at the Earth’s surface on the mesoscale. At the Swedish Meteorological and Hydrological Institute (SMHI) we have set up a model system that produce hourly information in terms of field data with a resolution of about 22 ´ 22 km2 for a geographic area covering Scandinavia and the run off region of the Baltic sea.Presently, the model calculates fields of global-, photosynthetically active- (PAR), UV- and direct radiation based on output from a mesoscale analysis system, a high resolution limited area numerical weather prediction model (NWP), an ice model for the Baltic sea together with satellite measurements of total ozone. A spectral clear sky model lies at the heart of the model system. Its output is multiplied by a function which captures the influence of clouds and precipitation. Different cloud effect functions are applied to the different radiation components, with the exception of global- and PAR for which the same relation is assumed.Measurements from the radiation network of SMHI were used for estimation and validation purposes. A first evaluation of the model system suggests that the RMSE for hourly global radiation data is on the order of 28% and about 16% for daily values. These errors are comparable to those obtained for models purely based on synoptic observations (SYNOP) (29% and 13%) . For UV radiation the figures are similar but for the direct radiation component they are worse; 53% and 31% respectively compared to 25% and 15% for the SYNOP models. To some extent the larger errors for the direct component could be explained by its sensitivity to scale differences when model grid squares are validated against point measurements.

Place, publisher, year, edition, pages
SMHI , 2001. , 52 p.
Series
RMK: Report Meteorology and Climatology, ISSN 0347-2116 ; 96
Keyword [en]
modelling, solar irradiance, global radiation, photosynthetically active radiation, PAR, direct radiation, PAR, ultraviolet radiation, UV, CIE, erythema, sunshine duration, cloud transmittance
Identifiers
URN: urn:nbn:se:smhi:diva-2348Local ID: Meteorologi, Rapporter, Serie RMKOAI: oai:DiVA.org:smhi-2348DiVA: diva2:947641
Available from: 2001-05-13 Created: 2016-07-08 Last updated: 2016-07-08Bibliographically approved

Open Access in DiVA

fulltext(7424 kB)30 downloads
File information
File name FULLTEXT01.pdfFile size 7424 kBChecksum SHA-512
3b76b48c37084f972343e9e0d4d1989bb98aa6e8342b898403827a3f4841315a5be04c7e0bd53036fbb97c9ec7349fe6891ee42c0283b7a72cbe8b7818a6f77c
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Landelius, TomasJosefsson, Weine
By organisation
Atmospheric remote sensingSMHI

Search outside of DiVA

GoogleGoogle Scholar
Total: 30 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 5 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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
v. 2.26.0
|