Determining the contribution of vertical advection to the net ecosystem exchange at Hyytiälä forest, Finland

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

In nighttime the importance of advection processes to full carbon balance estimated by micrometeorological methods is pronounced. The vertical advection needs the determination of mean vertical velocity which can be obtained from planar fitting. which is the determination of mean local streamline coordinates based on the statistics of the wind field measured over long periods. We tested the utilization of planar-fitting based vertical advection using long-term eddy covariance and CO concentration gradient data at SMEAR II field station (Hyytiala, Southern Finland). The vertical -advection corrected carbon balance, without any friction velocity filtering, agrees very well with those obtained by filtering and gap-filling procedure, and those by chambers and ecosystem model. Although no direct measurements for horizontal advection is available, the results indicate minor significance of horizontal advection in the studied cases.
Alkuperäiskielienglanti
LehtiTellus. Series B: Chemical and Physical Meteorology
Vuosikerta59B
Numero5
Sivut900-909
Sivumäärä10
ISSN0280-6509
DOI - pysyväislinkit
TilaJulkaistu - 2007
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 411 Maatalous ja metsätieteet

Lainaa tätä

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title = "Determining the contribution of vertical advection to the net ecosystem exchange at Hyyti{\"a}l{\"a} forest, Finland",
abstract = "In nighttime the importance of advection processes to full carbon balance estimated by micrometeorological methods is pronounced. The vertical advection needs the determination of mean vertical velocity which can be obtained from planar fitting. which is the determination of mean local streamline coordinates based on the statistics of the wind field measured over long periods. We tested the utilization of planar-fitting based vertical advection using long-term eddy covariance and CO concentration gradient data at SMEAR II field station (Hyytiala, Southern Finland). The vertical -advection corrected carbon balance, without any friction velocity filtering, agrees very well with those obtained by filtering and gap-filling procedure, and those by chambers and ecosystem model. Although no direct measurements for horizontal advection is available, the results indicate minor significance of horizontal advection in the studied cases.",
keywords = "411 Agriculture and forestry",
author = "Ivan Mammarella and Pasi Kolari and Janne Rinne and Petri Keronen and Jukka Pumpanen and Timo Vesala",
year = "2007",
doi = "10.1111/j.1600-0889.2007.00306.x",
language = "English",
volume = "59B",
pages = "900--909",
journal = "Tellus. Series B: Chemical and Physical Meteorology",
issn = "0280-6509",
publisher = "Taylor & Francis",
number = "5",

}

TY - JOUR

T1 - Determining the contribution of vertical advection to the net ecosystem exchange at Hyytiälä forest, Finland

AU - Mammarella, Ivan

AU - Kolari, Pasi

AU - Rinne, Janne

AU - Keronen, Petri

AU - Pumpanen, Jukka

AU - Vesala, Timo

PY - 2007

Y1 - 2007

N2 - In nighttime the importance of advection processes to full carbon balance estimated by micrometeorological methods is pronounced. The vertical advection needs the determination of mean vertical velocity which can be obtained from planar fitting. which is the determination of mean local streamline coordinates based on the statistics of the wind field measured over long periods. We tested the utilization of planar-fitting based vertical advection using long-term eddy covariance and CO concentration gradient data at SMEAR II field station (Hyytiala, Southern Finland). The vertical -advection corrected carbon balance, without any friction velocity filtering, agrees very well with those obtained by filtering and gap-filling procedure, and those by chambers and ecosystem model. Although no direct measurements for horizontal advection is available, the results indicate minor significance of horizontal advection in the studied cases.

AB - In nighttime the importance of advection processes to full carbon balance estimated by micrometeorological methods is pronounced. The vertical advection needs the determination of mean vertical velocity which can be obtained from planar fitting. which is the determination of mean local streamline coordinates based on the statistics of the wind field measured over long periods. We tested the utilization of planar-fitting based vertical advection using long-term eddy covariance and CO concentration gradient data at SMEAR II field station (Hyytiala, Southern Finland). The vertical -advection corrected carbon balance, without any friction velocity filtering, agrees very well with those obtained by filtering and gap-filling procedure, and those by chambers and ecosystem model. Although no direct measurements for horizontal advection is available, the results indicate minor significance of horizontal advection in the studied cases.

KW - 411 Agriculture and forestry

U2 - 10.1111/j.1600-0889.2007.00306.x

DO - 10.1111/j.1600-0889.2007.00306.x

M3 - Article

VL - 59B

SP - 900

EP - 909

JO - Tellus. Series B: Chemical and Physical Meteorology

JF - Tellus. Series B: Chemical and Physical Meteorology

SN - 0280-6509

IS - 5

ER -