Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Poul Hummelshøj"'
Publikováno v:
Wind Energy Science, Vol 5, Pp 977-981 (2020)
Tilg, A-M, Hasager, C B, Kirtzel, H-J & Hummelshøj, P 2020, ' Brief communication: Nowcasting of precipitation for leading-edge-erosion-safe mode ', Wind Energy Science, vol. 5, no. 3, pp. 977-981 . https://doi.org/10.5194/wes-5-977-2020
Tilg, A-M, Hasager, C B, Kirtzel, H-J & Hummelshøj, P 2020, ' Brief communication: Nowcasting of precipitation for leading-edge-erosion-safe mode ', Wind Energy Science, vol. 5, no. 3, pp. 977-981 . https://doi.org/10.5194/wes-5-977-2020
Leading-edge erosion (LEE) of wind turbine blades is caused by the impact of hydrometeors, which appear in a solid or liquid phase. A reduction in the wind turbine blades' tip speed during defined precipitation events can mitigate LEE. To apply such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d83203e5c08d563c9f1d7f1bacf2949
https://wes.copernicus.org/articles/5/977/2020/wes-5-977-2020.pdf
https://wes.copernicus.org/articles/5/977/2020/wes-5-977-2020.pdf
Sonic anemometers provide point observations of the three-dimensional velocity field at high sampling rates and are crucial instruments for understanding and quantifying the fluxes of momentum, energy and scalars between the atmosphere and Earth’s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2b94bca7d7504240d52ae0788134265
https://doi.org/10.5194/egusphere-egu21-12396
https://doi.org/10.5194/egusphere-egu21-12396
Leading edge erosion (LEE) of wind turbine blades is caused by the impact of hydrometeors, which appear in solid or liquid phase. A reduction of the wind turbine blades’ tip speed during severe precipitation events can mitigate LEE. To apply such a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4959db9489c1a56c3557a0fe627675ba
https://www.wind-energ-sci-discuss.net/wes-2020-4/
https://www.wind-energ-sci-discuss.net/wes-2020-4/
Publikováno v:
Agricultural and Forest Meteorology
The exchange of CO 2 between the atmosphere and a beech forest near Soro, Denmark, was measured continuously over 14 years (1996–2009). The simultaneous measurement of many parameters that influence CO 2 uptake makes it possible to relate the CO 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::647b129828a1c3021ed6769fd972e870
Publikováno v:
Basic and Applied Ecology. 3:157-169
Summary Fluxes of carbon dioxide, water vapour, heat and momentum over a northern German beech forest were measured by use of the eddy covariance technique. The canopy conductance to water vapour transfer, g c , was calculated for daylight periods wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4dff60bf7d2364e6fc8f24c4f119737
https://doi.org/10.1078/1439-1791-00093
https://doi.org/10.1078/1439-1791-00093
Publikováno v:
Agricultural and Forest Meteorology. 107:29-41
As part of the EUROFLUX network a long-term monitoring station for fluxes of CO 2 and water vapour has been established in an 80-year old beech forest in Denmark. The station has been in continuous operation since June 1996 and will be so at least to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d3c8315dbb1867a5ba7d99c5c112621
https://doi.org/10.1016/s0168-1923(00)00227-6
https://doi.org/10.1016/s0168-1923(00)00227-6
Autor:
Renate Vanselow, Mathias Herbst, Poul Hummelshøj, Niels Otto Jensen, Ludger Kappen, Werner L. Kutsch
Publikováno v:
Basic and Applied Ecology. 2:265-281
Summary The response of beech leaves to leaf-to-air vapour pressure deficit (VPD) is not constant throughout the growing season. In situ measurements of leaf gas exchange showed that this intra-annual variation of stomatal sensitivity to VPD cannot b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bed41f7da9c6bf83c835c205c13d5f6a
https://doi.org/10.1078/1439-1791-00054
https://doi.org/10.1078/1439-1791-00054
Determination of the terpene flux from orange species and Norway spruce by relaxed eddy accumulation
Autor:
Kim Pilegaard, B.R. Larsen, Christian Lohse, Poul Hummelshøj, N.O. Jensen, C.S. Christensen, Henrik Skov
Publikováno v:
Christensen, C S, Hummelshøj, P, Jensen, N O, Larsen, B, Lohse, C, Pilegaard, K & Skov, H 2000, ' Determination of the Terpene Flux from Orange Species and Norway Spruce by Relaxed Eddy Accumulation ', Atmospheric Environment, vol. 34, pp. 3057-3067 .
Aarhus University
Aarhus University
Terpene fluxes from a Norway spruce (Picea abies) forest and an orange orchard (Citrus clementii and Citrus sinensis) were measured by relaxed eddy accumulation (REA) during summer 1997. α-pinene and β-pinene were the most abundant terpenes emitted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a0f5c3ed7ac4114fbd5800c10c10510
https://doi.org/10.1016/s1352-2310(99)00502-6
https://doi.org/10.1016/s1352-2310(99)00502-6
Publikováno v:
Vignati, E, Berkowicz, R, Palmgren, F, Lyck, E & Hummelshøj, P 1999, ' Transformation of Size Distributions of Emitted Particles in Streets ', The Science of the Total Environment, vol. 235, pp. 37-49 .
Dispersion and transformation of particulate matter in streets are studied by using a combination of a street pollution dispersion model, the Operational Street Pollution Model (OSPM) and a particle transformation model. The particle model implements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fd719d8a55a4b0ea1c2b1ce1e0aa077
https://doi.org/10.1016/s0048-9697(99)00188-6
https://doi.org/10.1016/s0048-9697(99)00188-6
Publikováno v:
Atmospheric Environment. 33:1367-1383
The dry deposition velocities and fluxes of ammonia have been estimated from measurements of the vertical gradient of ammonia and micrometeorology above a spruce forest in western Jutland, Denmark. Measurements have been made in seven periods, each l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4914940f9f23691779b61e0ed6a1832
https://doi.org/10.1016/s1352-2310(98)00363-x
https://doi.org/10.1016/s1352-2310(98)00363-x