Zobrazeno 1 - 10
of 47
pro vyhledávání: '"W C Oechel"'
Publikováno v:
Environmental Research: Ecology, Vol 2, Iss 4, p 045003 (2023)
Significant uncertainties persist concerning how Arctic soil tundra carbon emission responds to environmental changes. In this study, 24 cores were sampled from drier (high centre polygons and rims) and wetter (low centre polygons and troughs) permaf
Externí odkaz:
https://doaj.org/article/c2a396f81d9747b4b64cf9e352f75313
Publikováno v:
Environmental Research Letters, Vol 8, Iss 3, p 035045 (2013)
The Arctic net ecosystem exchange (NEE) of CO _2 between the land surface and the atmosphere is influenced by the timing of snow onset and melt. The objective of this study was to examine whether uncertainty in model estimates of NEE could be reduced
Externí odkaz:
https://doaj.org/article/18ab9da8239945e998c9c8f541075a65
Publikováno v:
Biogeosciences, Vol 19, Pp 2779-2794 (2022)
The warming of the Arctic is affecting the carbon cycle of tundra ecosystems. Most research on carbon fluxes from Arctic tundra ecosystems has focused on abiotic environmental controls (e.g., temperature, rainfall, or radiation). However, Arctic tund
Externí odkaz:
https://doaj.org/article/07ffd427bc844192a5a558be263782aa
Autor:
M. A. Ward, T. M. Hill, C. Souza, T. Filipczyk, A. M. Ricart, S. Merolla, L. R. Capece, B. C. O'Donnell, K. Elsmore, W. C. Oechel, K. M. Beheshti
Publikováno v:
Biogeosciences, Vol 18, Pp 4717-4732 (2021)
Salt marshes and seagrass meadows can sequester and store high quantities of organic carbon (OC) in their sediments relative to other marine and terrestrial habitats. Assessing carbon stocks, carbon sources, and the transfer of carbon between habitat
Externí odkaz:
https://doaj.org/article/6cc9eaf8e28f440b992a5fb440ce6f2d
Autor:
K. B. Delwiche, S. H. Knox, A. Malhotra, E. Fluet-Chouinard, G. McNicol, S. Feron, Z. Ouyang, D. Papale, C. Trotta, E. Canfora, Y.-W. Cheah, D. Christianson, Ma. C. R. Alberto, P. Alekseychik, M. Aurela, D. Baldocchi, S. Bansal, D. P. Billesbach, G. Bohrer, R. Bracho, N. Buchmann, D. I. Campbell, G. Celis, J. Chen, W. Chen, H. Chu, H. J. Dalmagro, S. Dengel, A. R. Desai, M. Detto, H. Dolman, E. Eichelmann, E. Euskirchen, D. Famulari, K. Fuchs, M. Goeckede, S. Gogo, M. J. Gondwe, J. P. Goodrich, P. Gottschalk, S. L. Graham, M. Heimann, M. Helbig, C. Helfter, K. S. Hemes, T. Hirano, D. Hollinger, L. Hörtnagl, H. Iwata, A. Jacotot, G. Jurasinski, M. Kang, K. Kasak, J. King, J. Klatt, F. Koebsch, K. W. Krauss, D. Y. F. Lai, A. Lohila, I. Mammarella, L. Belelli Marchesini, G. Manca, J. H. Matthes, T. Maximov, L. Merbold, B. Mitra, T. H. Morin, E. Nemitz, M. B. Nilsson, S. Niu, W. C. Oechel, P. Y. Oikawa, K. Ono, M. Peichl, O. Peltola, M. L. Reba, A. D. Richardson, W. Riley, B. R. K. Runkle, Y. Ryu, T. Sachs, A. Sakabe, C. R. Sanchez, E. A. Schuur, K. V. R. Schäfer, O. Sonnentag, J. P. Sparks, E. Stuart-Haëntjens, C. Sturtevant, R. C. Sullivan, D. J. Szutu, J. E. Thom, M. S. Torn, E.-S. Tuittila, J. Turner, M. Ueyama, A. C. Valach, R. Vargas, A. Varlagin, A. Vazquez-Lule, J. G. Verfaillie, T. Vesala, G. L. Vourlitis, E. J. Ward, C. Wille, G. Wohlfahrt, G. X. Wong, Z. Zhang, D. Zona, L. Windham-Myers, B. Poulter, R. B. Jackson
Publikováno v:
Earth System Science Data, Vol 13, Pp 3607-3689 (2021)
Methane (CH4) emissions from natural landscapes constitute roughly half of global CH4 contributions to the atmosphere, yet large uncertainties remain in the absolute magnitude and the seasonality of emission quantities and drivers. Eddy covariance (E
Externí odkaz:
https://doaj.org/article/1a0b0d8493814f1ab3b2b9bac057e320
Autor:
O. Peltola, T. Vesala, Y. Gao, O. Räty, P. Alekseychik, M. Aurela, B. Chojnicki, A. R. Desai, A. J. Dolman, E. S. Euskirchen, T. Friborg, M. Göckede, M. Helbig, E. Humphreys, R. B. Jackson, G. Jocher, F. Joos, J. Klatt, S. H. Knox, N. Kowalska, L. Kutzbach, S. Lienert, A. Lohila, I. Mammarella, D. F. Nadeau, M. B. Nilsson, W. C. Oechel, M. Peichl, T. Pypker, W. Quinton, J. Rinne, T. Sachs, M. Samson, H. P. Schmid, O. Sonnentag, C. Wille, D. Zona, T. Aalto
Publikováno v:
Earth System Science Data, Vol 11, Pp 1263-1289 (2019)
Natural wetlands constitute the largest and most uncertain source of methane (CH4) to the atmosphere and a large fraction of them are found in the northern latitudes. These emissions are typically estimated using process (“bottom-up”) or inversio
Externí odkaz:
https://doaj.org/article/e9f9e6f46d294268a5568099fe262f7d
Autor:
Y. Yi, J. S. Kimball, R. H. Chen, M. Moghaddam, R. H. Reichle, U. Mishra, D. Zona, W. C. Oechel
Publikováno v:
The Cryosphere, Vol 12, Pp 145-161 (2018)
An important feature of the Arctic is large spatial heterogeneity in active layer conditions, which is generally poorly represented by global models and can lead to large uncertainties in predicting regional ecosystem responses and climate feedbac
Externí odkaz:
https://doaj.org/article/f9cd5bf39bd14b07ae53fcbb0e360bb6
Publikováno v:
Geoscientific Model Development, Vol 10, Pp 2875-2890 (2017)
The net storage heat flux (ΔQS) is important in the urban surface energy balance (SEB) but its determination remains a significant challenge. The hysteresis pattern of the diurnal relation between the ΔQS and net all-wave radiation (Q∗) has be
Externí odkaz:
https://doaj.org/article/0b4c62daf6ca41bcaa41fb68cd017b92
Autor:
X. Xu, W. J. Riley, C. D. Koven, D. P. Billesbach, R. Y.-W. Chang, R. Commane, E. S. Euskirchen, S. Hartery, Y. Harazono, H. Iwata, K. C. McDonald, C. E. Miller, W. C. Oechel, B. Poulter, N. Raz-Yaseef, C. Sweeney, M. Torn, S. C. Wofsy, Z. Zhang, D. Zona
Publikováno v:
Biogeosciences, Vol 13, Iss 17, Pp 5043-5056 (2016)
Wetlands are the largest global natural methane (CH4) source, and emissions between 50 and 70° N latitude contribute 10–30 % to this source. Predictive capability of land models for northern wetland CH4 emissions is still low due to limited site m
Externí odkaz:
https://doaj.org/article/0903b4730cdc4fc581fac89ec77a5401
Autor:
D. Zona, D. A. Lipson, J. H. Richards, G. K. Phoenix, A. K. Liljedahl, M. Ueyama, C. S. Sturtevant, W. C. Oechel
Publikováno v:
Biogeosciences, Vol 11, Iss 20, Pp 5877-5888 (2014)
The importance and consequences of extreme events on the global carbon budget are inadequately understood. This includes the differential impact of extreme events on various ecosystem components, lag effects, recovery times, and compensatory processe
Externí odkaz:
https://doaj.org/article/6c563750dae04c23a6a9f28759d33909