Zobrazeno 1 - 10
of 47
pro vyhledávání: '"R. L. Desjardins"'
Publikováno v:
Advances in Science and Research, Vol 13, Pp 43-49 (2016)
Over the past 30 years, the Canadian Twin Otter research group has operated an aircraft platform for the study of atmospheric greenhouse gas fluxes (carbon dioxide, ozone, nitrous oxide and methane) and energy exchange (latent and sensible heat) over
Externí odkaz:
https://doaj.org/article/9b57e7b22ec24156b93d6a063bc3f9cf
Publikováno v:
Advances in Science and Research, Vol 13, Pp 37-42 (2016)
This study uses 55 years of hourly observations of air temperature, relative humidity, daily precipitation, snow cover and cloud cover from 15 climate stations across the Canadian Prairies to analyze biosphere-atmosphere interactions. We will provide
Externí odkaz:
https://doaj.org/article/24eb16019b934439984fa92f6887987b
Autor:
R. L. Desjardins, S. Kaharabata
Publikováno v:
International Journal of Biometeorology. 65:813-825
This paper demonstrates the use of climatological data and published information to develop a thaw-freeze/freeze-kill indicator for fruit trees during flowering. In fruit-producing regions, when budding and flowering occur before the last spring free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f94ddc5e16c71f8c95b6d8628d20414
https://doi.org/10.1007/s00484-020-02055-z
https://doi.org/10.1007/s00484-020-02055-z
Autor:
S, Kaharabata, R L, Desjardins
Publikováno v:
International journal of biometeorology. 65(6)
This paper demonstrates the use of climatological data and published information to develop a thaw-freeze/freeze-kill indicator for fruit trees during flowering. In fruit-producing regions, when budding and flowering occur before the last spring free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::58388a87d537a22049beb92eba9a6440
https://pubmed.ncbi.nlm.nih.gov/33523308
https://pubmed.ncbi.nlm.nih.gov/33523308
Publikováno v:
Environmental Research Letters, Vol 8, Iss 3, p 035008 (2013)
Methane emissions from manure management represent an important mitigation opportunity, yet emission quantification methods remain crude and do not contain adequate detail to capture changes in agricultural practices that may influence emissions. Usi
Externí odkaz:
https://doaj.org/article/79c7be639c714821bcecd25a18f4cf67
Publikováno v:
Energy. 35:2261-2269
The Canadian Economic and Emissions Model for Agriculture (CEEMA) is considered a potentially useful tool for investigating the impacts of biofuel feedstock production on rural land use. Fossil CO 2 emissions from fieldwork in the CEEMA model were up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44f4685e219e0a2d2ea7a2cc2c7bd27e
https://doi.org/10.1016/j.energy.2010.02.013
https://doi.org/10.1016/j.energy.2010.02.013
Autor:
R. L. Desjardins, J. A. Dyer
Publikováno v:
Journal of Sustainable Agriculture. 33:210-228
This paper describes the history of farm mechanization in Canada and the CO2 emissions from farm energy. Tractor sizes increased steadily from 1920 to 1975, then leveled off after 1981. Canadian farms changed from one tractor for every ten farms foll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b517be52a8a456760bc2bd523fcd41b
https://doi.org/10.1080/10440040802660137
https://doi.org/10.1080/10440040802660137
Autor:
J. A. Dyer, R. L. Desjardins
Publikováno v:
Journal of Sustainable Agriculture. 25:141-155
The Farm Fieldwork and Fossil Fuel Energy and Emissions (F4E2) model was upgraded and then re-verified using the 1996 Farm Energy Use survey (FEUS). The revised model was used to evaluate trends in fossil fuel-based GHG emissions from 1986 to 2001 by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cba806f0963b11ab1c564edf0257ac9
https://doi.org/10.1300/j064v25n03_09
https://doi.org/10.1300/j064v25n03_09
Autor:
J. A. Dyer, R. L. Desjardins
Publikováno v:
Journal of Sustainable Agriculture. 27:71-90
Although fuel used for farm fieldwork contributes less than 10% of on-farm greenhouse gas (GHG) emissions, a range of commodities, scales of farming and regional constraints, and implement choices make farm machinery fuel-related GHG emissions highly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::384035ca5212cd75ea6fd9a7def2b3ff
https://doi.org/10.1300/j064v27n01_05
https://doi.org/10.1300/j064v27n01_05
Autor:
R. L. Desjardins, J. A. Dyer
Publikováno v:
Journal of Sustainable Agriculture. 22:59-74
The impact of proposed changes in field operations and land use on fossil fuel consumption on Canadian farms was analyzed using a computer model of the mechanics of farm machinery. The model predicted tractor/harvester power needs (kW), implement siz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9665d85c19b2e5371fc98ce376b6b105
https://doi.org/10.1300/j064v22n03_07
https://doi.org/10.1300/j064v22n03_07