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Area averaging of land surface-atmosphere fluxes in NOPEX: challenges, results and perspectives

Gryning, SE; Halldin, S and Lindroth, Anders LU (2002) In Boreal Environment Research: An International Interdisciplinary Journal 7(4). p.379-387
Abstract
The NOPEX experimental campaigns dealt with the land-surface-atmosphere exchange of momentum, heat, water and CO2 on local and regional scales. In this paper emphasis is put on the NOPEX experiences with respect to the spatial integration of fluxes of momentum, heat, humidity and CO2 over the mosaic of forest, agricultural land, lakes and mires that make up the southern part of the NOPEX area. It is found that the forest dominates both the regional momentum and heat fluxes but in very different ways. Furthermore, results from a NOPEX experiment in the northern zone of the boreal forest in Finnish Lapland highlights the very unique processes associated with the energy exchange within a forest in wintertime. The interaction of the forest... (More)
The NOPEX experimental campaigns dealt with the land-surface-atmosphere exchange of momentum, heat, water and CO2 on local and regional scales. In this paper emphasis is put on the NOPEX experiences with respect to the spatial integration of fluxes of momentum, heat, humidity and CO2 over the mosaic of forest, agricultural land, lakes and mires that make up the southern part of the NOPEX area. It is found that the forest dominates both the regional momentum and heat fluxes but in very different ways. Furthermore, results from a NOPEX experiment in the northern zone of the boreal forest in Finnish Lapland highlights the very unique processes associated with the energy exchange within a forest in wintertime. The interaction of the forest canopy with sunshine provides a considerable energy source, particularly at low solar angles. A considerable improvement in model simulations of fluxes and surface temperature was achieved when this effect and the heat storage of the canopy were taken into account. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Boreal Environment Research: An International Interdisciplinary Journal
volume
7
issue
4
pages
379 - 387
publisher
Finnish Zoological and Botanical Publishing Board
external identifiers
  • wos:000221371800010
  • scopus:0036946887
ISSN
1239-6095
language
English
LU publication?
yes
id
99374167-40ba-4f3e-9d5c-c387220f37fb (old id 279131)
alternative location
http://www.borenv.net/BER/pdfs/ber7-379.pdf
date added to LUP
2007-08-21 16:16:29
date last changed
2017-01-01 07:11:56
@article{99374167-40ba-4f3e-9d5c-c387220f37fb,
  abstract     = {The NOPEX experimental campaigns dealt with the land-surface-atmosphere exchange of momentum, heat, water and CO2 on local and regional scales. In this paper emphasis is put on the NOPEX experiences with respect to the spatial integration of fluxes of momentum, heat, humidity and CO2 over the mosaic of forest, agricultural land, lakes and mires that make up the southern part of the NOPEX area. It is found that the forest dominates both the regional momentum and heat fluxes but in very different ways. Furthermore, results from a NOPEX experiment in the northern zone of the boreal forest in Finnish Lapland highlights the very unique processes associated with the energy exchange within a forest in wintertime. The interaction of the forest canopy with sunshine provides a considerable energy source, particularly at low solar angles. A considerable improvement in model simulations of fluxes and surface temperature was achieved when this effect and the heat storage of the canopy were taken into account.},
  author       = {Gryning, SE and Halldin, S and Lindroth, Anders},
  issn         = {1239-6095},
  language     = {eng},
  number       = {4},
  pages        = {379--387},
  publisher    = {Finnish Zoological and Botanical Publishing Board},
  series       = {Boreal Environment Research: An International Interdisciplinary Journal},
  title        = {Area averaging of land surface-atmosphere fluxes in NOPEX: challenges, results and perspectives},
  volume       = {7},
  year         = {2002},
}