Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia
Aerosols produced by wildfires are a common phenomenon in boreal regions. For the Siberian taiga, it is still an open question if the effects of aerosols on atmospheric conditions increase net CO2 uptake or photosynthesis. We investigated the factors controlling forest net ecosystem productivity (NE...
Published in: | Agricultural and Forest Meteorology |
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ftopenagrar:oai:www.openagrar.de:openagrar_mods_00043554 2024-09-15T18:38:39+00:00 Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia Park, Sung-Bin Knohl, Alexander Lucas-Moffat, Antje Maria Migliavacca, Mirco Gerbig, Christop Vesala, Timo Peltola, Olli Mammarella, Ivan Kolle, Olaf Lavric, Jost Valentin Prokushkin, Anatoly Heimann, Martin 2018 https://doi.org/10.1016/j.agrformet.2017.09.009 https://www.openagrar.de/receive/openagrar_mods_00043554 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00017212/dn059790.pdf eng eng Agricultural and forest meteorology -- Agric For Meteorol -- 0168-1923 -- 409905-9 https://doi.org/10.1016/j.agrformet.2017.09.009 https://www.openagrar.de/receive/openagrar_mods_00043554 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00017212/dn059790.pdf public https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Text article ddc:630 Eddy covariance -- Net ecosystem productivity -- Smoke -- Photosynthetically active radiation -- Artificial neural networks -- Central Siberia article Text doc-type:article 2018 ftopenagrar https://doi.org/10.1016/j.agrformet.2017.09.009 2024-07-08T23:56:25Z Aerosols produced by wildfires are a common phenomenon in boreal regions. For the Siberian taiga, it is still an open question if the effects of aerosols on atmospheric conditions increase net CO2 uptake or photosynthesis. We investigated the factors controlling forest net ecosystem productivity (NEP) and explored how clouds and smoke modulate radiation as a major factor controlling NEP during fire events in the years 2012 and 2013. To characterize the underlying mechanisms of the NEP response to environmental drivers, Artificial Neural Networks (ANNs) were trained by eddy covariance flux measurements nearby the Zotino Tall Tower Observatory (ZOTTO). Total photosynthetically active radiation, vapour pressure deficit, and diffuse fraction explain at about 54–58% of NEP variability. NEP shows a strong negative sensitivity to VPD, and a small positive to fdif. A strong diffuse radiation fertilization effect does not exist at ZOTTO forest due to the combined effects of low light intensity, sparse canopy and low leaf area index. Results suggests that light intensity and canopy structure are important factors of the overall diffuse radiation fertilization effect. Article in Journal/Newspaper taiga Siberia OpenAgrar (OA) Agricultural and Forest Meteorology 250-251 376 387 |
institution |
Open Polar |
collection |
OpenAgrar (OA) |
op_collection_id |
ftopenagrar |
language |
English |
topic |
Text article ddc:630 Eddy covariance -- Net ecosystem productivity -- Smoke -- Photosynthetically active radiation -- Artificial neural networks -- Central Siberia |
spellingShingle |
Text article ddc:630 Eddy covariance -- Net ecosystem productivity -- Smoke -- Photosynthetically active radiation -- Artificial neural networks -- Central Siberia Park, Sung-Bin Knohl, Alexander Lucas-Moffat, Antje Maria Migliavacca, Mirco Gerbig, Christop Vesala, Timo Peltola, Olli Mammarella, Ivan Kolle, Olaf Lavric, Jost Valentin Prokushkin, Anatoly Heimann, Martin Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia |
topic_facet |
Text article ddc:630 Eddy covariance -- Net ecosystem productivity -- Smoke -- Photosynthetically active radiation -- Artificial neural networks -- Central Siberia |
description |
Aerosols produced by wildfires are a common phenomenon in boreal regions. For the Siberian taiga, it is still an open question if the effects of aerosols on atmospheric conditions increase net CO2 uptake or photosynthesis. We investigated the factors controlling forest net ecosystem productivity (NEP) and explored how clouds and smoke modulate radiation as a major factor controlling NEP during fire events in the years 2012 and 2013. To characterize the underlying mechanisms of the NEP response to environmental drivers, Artificial Neural Networks (ANNs) were trained by eddy covariance flux measurements nearby the Zotino Tall Tower Observatory (ZOTTO). Total photosynthetically active radiation, vapour pressure deficit, and diffuse fraction explain at about 54–58% of NEP variability. NEP shows a strong negative sensitivity to VPD, and a small positive to fdif. A strong diffuse radiation fertilization effect does not exist at ZOTTO forest due to the combined effects of low light intensity, sparse canopy and low leaf area index. Results suggests that light intensity and canopy structure are important factors of the overall diffuse radiation fertilization effect. |
format |
Article in Journal/Newspaper |
author |
Park, Sung-Bin Knohl, Alexander Lucas-Moffat, Antje Maria Migliavacca, Mirco Gerbig, Christop Vesala, Timo Peltola, Olli Mammarella, Ivan Kolle, Olaf Lavric, Jost Valentin Prokushkin, Anatoly Heimann, Martin |
author_facet |
Park, Sung-Bin Knohl, Alexander Lucas-Moffat, Antje Maria Migliavacca, Mirco Gerbig, Christop Vesala, Timo Peltola, Olli Mammarella, Ivan Kolle, Olaf Lavric, Jost Valentin Prokushkin, Anatoly Heimann, Martin |
author_sort |
Park, Sung-Bin |
title |
Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia |
title_short |
Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia |
title_full |
Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia |
title_fullStr |
Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia |
title_full_unstemmed |
Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia |
title_sort |
strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central siberia |
publishDate |
2018 |
url |
https://doi.org/10.1016/j.agrformet.2017.09.009 https://www.openagrar.de/receive/openagrar_mods_00043554 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00017212/dn059790.pdf |
genre |
taiga Siberia |
genre_facet |
taiga Siberia |
op_relation |
Agricultural and forest meteorology -- Agric For Meteorol -- 0168-1923 -- 409905-9 https://doi.org/10.1016/j.agrformet.2017.09.009 https://www.openagrar.de/receive/openagrar_mods_00043554 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00017212/dn059790.pdf |
op_rights |
public https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.agrformet.2017.09.009 |
container_title |
Agricultural and Forest Meteorology |
container_volume |
250-251 |
container_start_page |
376 |
op_container_end_page |
387 |
_version_ |
1810483063946215424 |