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
Beräkning av moln- och dimdepositionen i Sverigemodellen – Resultat för 1997 och 1998: Estimation of cloud and fog deposition by use of ”Sverigemodellen” – Results for 1997 and 1998
SMHI, Research Department, Air quality.
SMHI, Research Department, Air quality.
2001 (Swedish)Report (Other academic)
Abstract [en]

The capture of cloud and fog droplets by vegetation as a possibly important deposition mechanism has been recognised lately after reports of increased forest decline with altitude. We are concerned with interception, impaction and stickiness of polluted cloud water and fog droplets to terrestrial surfaces, including forest canopies. This deposition is mediated by low-level clouds, in which parts of the terrain can be immersed, or by the presence of orographic and radiation fog. In this study the transport of cloud and fog droplets towards terrestrial surfaces is parameterised and the “occult” deposition (mediated by both clouds and fog) is calculated by a new approach, implemented in “Sverigemodellen” (MATCH-Sverige), a 3D Eulerian transport and dispersion model employed for making environmental assessments in Sweden.The model scheme is taking into account the mesoscale analysis (MESAN) of low-cloud coverage and cloud-base height, the visibility analysis, detailed topography information, land use, modelled atmospheric concentrations and the instantaneous deposition parameters for the investigated species (acidifying air pollutants: sulphate and oxidised/reduced nitrogen).The model scheme is validated by comparing with throughfall monitoring of sulphate deposition to coniferous forests at elevated sites in the Swedish mountains. It shows a rather good fit to the measurements, generally within 25%, which is deemed as encouraging. Discrepancies exist though and are subject of discussion. The percentage of occult deposition can be up to 115% of the sum of dry and wet deposition. Therefore we cannot ignore this contribution in the assessments of deposition of acidifying pollutants. The highest fluxes of cloud deposition are assigned to mountainous regions in Northern Sweden, while the highest fog deposition is calculated at a location in Jönköpings County, on the Sydsvenska höglandet.

Place, publisher, year, edition, pages
SMHI , 2001. , 36 p.
Series
Meteorology, ISSN 0283-7730 ; 98
Keyword [en]
cloud deposition, fog deposition, occult deposition, Sweden, acidifying pollutants, sulphate, nitrate, ammonium, MATCH, MESAN
Identifiers
URN: urn:nbn:se:smhi:diva-2266Local ID: Meteorologi, Rapporter, Serie MeteorologiOAI: oai:DiVA.org:smhi-2266DiVA: diva2:947559
Available from: 2001-09-29 Created: 2016-07-08 Last updated: 2016-07-08Bibliographically approved

Open Access in DiVA

fulltext(2116 kB)4 downloads
File information
File name FULLTEXT01.pdfFile size 2116 kBChecksum SHA-512
a45785f86a1adfa41c4c0348b9851d6b49a991927d6af59a012fa9f832ca5811005cc72c846c954ce40d61b8b5dd964bd4516d60fa089563cc5d8a73ccc9384a
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Persson, Christer
By organisation
Air quality

Search outside of DiVA

GoogleGoogle Scholar
Total: 4 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: 7 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
|