Sökning: onr:"swepub:oai:lup.lub.lu.se:d73171d4-11b1-4b85-a2dc-6225e5df3187" > New data-driven est...
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000 | 06202naa a2200733 4500 | |
001 | oai:lup.lub.lu.se:d73171d4-11b1-4b85-a2dc-6225e5df3187 | |
003 | SwePub | |
008 | 170510s2017 | |||||||||||000 ||eng| | |
024 | 7 | a https://lup.lub.lu.se/record/d73171d4-11b1-4b85-a2dc-6225e5df31872 URI |
024 | 7 | a https://doi.org/10.1002/2016JG0036402 DOI |
040 | a (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Ichii, Kazuhitou National Institute for Environmental Studies of Japan,Chiba University,Japan Agency for Marine-Earth Science and Technology4 aut |
245 | 1 0 | a New data-driven estimation of terrestrial CO2 fluxes in Asia using a standardized database of eddy covariance measurements, remote sensing data, and support vector regression |
264 | 1 | c 2017 |
520 | a The lack of a standardized database of eddy covariance observations has been an obstacle for data-driven estimation of terrestrial CO2 fluxes in Asia. In this study, we developed such a standardized database using 54 sites from various databases by applying consistent postprocessing for data-driven estimation of gross primary productivity (GPP) and net ecosystem CO2 exchange (NEE). Data-driven estimation was conducted by using a machine learning algorithm: support vector regression (SVR), with remote sensing data for 2000 to 2015 period. Site-level evaluation of the estimated CO2 fluxes shows that although performance varies in different vegetation and climate classifications, GPP and NEE at 8days are reproduced (e.g., r2=0.73 and 0.42 for 8day GPP and NEE). Evaluation of spatially estimated GPP with Global Ozone Monitoring Experiment 2 sensor-based Sun-induced chlorophyll fluorescence shows that monthly GPP variations at subcontinental scale were reproduced by SVR (r2=1.00, 0.94, 0.91, and 0.89 for Siberia, East Asia, South Asia, and Southeast Asia, respectively). Evaluation of spatially estimated NEE with net atmosphere-land CO2 fluxes of Greenhouse Gases Observing Satellite (GOSAT) Level 4A product shows that monthly variations of these data were consistent in Siberia and East Asia; meanwhile, inconsistency was found in South Asia and Southeast Asia. Furthermore, differences in the land CO2 fluxes from SVR-NEE and GOSAT Level 4A were partially explained by accounting for the differences in the definition of land CO2 fluxes. These data-driven estimates can provide a new opportunity to assess CO2 fluxes in Asia and evaluate and constrain terrestrial ecosystem models. | |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Klimatforskning0 (SwePub)105012 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Climate Research0 (SwePub)105012 hsv//eng |
653 | a Asia | |
653 | a Data-driven model | |
653 | a Eddy covariance data | |
653 | a Remote sensing | |
653 | a Terrestrial CO flux | |
653 | a Upscaling | |
700 | 1 | a Ueyama, Masahitou Osaka Prefecture University4 aut |
700 | 1 | a Kondo, Masayukiu Chiba University,Japan Agency for Marine-Earth Science and Technology4 aut |
700 | 1 | a Saigusa, Nobukou National Institute for Environmental Studies of Japan4 aut |
700 | 1 | a Kim, Joonu Seoul National University4 aut |
700 | 1 | a Alberto, Ma Carmelitau International Rice Research Institute (IRRI)4 aut |
700 | 1 | a Ardö, Jonasu Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science4 aut0 (Swepub:lu)natg-jar |
700 | 1 | a Euskirchen, Eugénie S.u University of Alaska Fairbanks4 aut |
700 | 1 | a Kang, Minseoku Seoul National University4 aut |
700 | 1 | a Hirano, Takashiu Hokkaido University4 aut |
700 | 1 | a Joiner, Joannau NASA Goddard Space Flight Center4 aut |
700 | 1 | a Kobayashi, Hidekiu Japan Agency for Marine-Earth Science and Technology4 aut |
700 | 1 | a Marchesini, Luca Belelliu Far Eastern Federal University,Vrije Universiteit Amsterdam4 aut |
700 | 1 | a Merbold, Lutzu International Livestock Research Institute Nairobi,ETH Zürich4 aut |
700 | 1 | a Miyata, Akirau Institute for Agro-Environmental Sciences, NARO4 aut |
700 | 1 | a Saitoh, Taku M.u Gifu University4 aut |
700 | 1 | a Takagi, Kentarou Hokkaido University4 aut |
700 | 1 | a Varlagin, Andreju Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences4 aut |
700 | 1 | a Bret-Harte, M. Syndoniau University of Alaska Fairbanks4 aut |
700 | 1 | a Kitamura, Kenzou Forestry and Forest Products Research Institute4 aut |
700 | 1 | a Kosugi, Yoshikou Kyoto University4 aut |
700 | 1 | a Kotani, Ayumiu Nagoya University4 aut |
700 | 1 | a Kumar, Kireetu G. B. Pant National Institute of Himalayan Environment and Sustainable Development4 aut |
700 | 1 | a Li, Sheng Gongu Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences4 aut |
700 | 1 | a Machimura, Takashiu Osaka University4 aut |
700 | 1 | a Matsuura, Yojirou Forestry and Forest Products Research Institute4 aut |
700 | 1 | a Mizoguchi, Yasukou Forestry and Forest Products Research Institute4 aut |
700 | 1 | a Ohta, Takeshiu Nagoya University4 aut |
700 | 1 | a Mukherjee, Sandipanu G. B. Pant National Institute of Himalayan Environment and Sustainable Development4 aut |
700 | 1 | a Yanagi, Yujiu Japan Agency for Marine-Earth Science and Technology4 aut |
700 | 1 | a Yasuda, Yukiou Forestry and Forest Products Research Institute4 aut |
700 | 1 | a Zhang, Yipingu Chinese Academy of Sciences4 aut |
700 | 1 | a Zhao, Fenghuau Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences4 aut |
710 | 2 | a National Institute for Environmental Studies of Japanb Chiba University4 org |
773 | 0 | t Journal of Geophysical Research - Biogeosciencesg 122:4, s. 767-795q 122:4<767-795x 2169-8953 |
856 | 4 | u http://dx.doi.org/10.1002/2016JG003640y FULLTEXT |
856 | 4 8 | u https://lup.lub.lu.se/record/d73171d4-11b1-4b85-a2dc-6225e5df3187 |
856 | 4 8 | u https://doi.org/10.1002/2016JG003640 |
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