Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Ahmed B Tawfik"'
Autor:
Alan K Betts, Ahmed B Tawfik
Publikováno v:
Frontiers in Earth Science, Vol 4 (2016)
We show the annual climatology of the diurnal cycle, stratified by opaque cloud, using the full hourly resolution of the Canadian Prairie data. The opaque cloud field itself has distinct cold and warm season diurnal climatologies; with a near-sunrise
Externí odkaz:
https://doaj.org/article/334e110f6a1a4722abecaf58922668cd
Autor:
Dan C. Collins, Hye-Mi Kim, Stephen Yeager, Jadwiga H. Richter, Julie M. Caron, Lantao Sun, Who M. Kim, A. S. Glanville, Ahmed B. Tawfik, Kathy Pegion, E. Lajoie
Publikováno v:
Weather and Forecasting. 35:2589-2602
There is a growing demand for understanding sources of predictability on subseasonal to seasonal (S2S) time scales. Predictability at subseasonal time scales is believed to come from processes varying slower than the atmosphere such as soil moisture,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::862a6cddf748061d5c411f5662ad327d
https://doi.org/10.1175/waf-d-20-0029.1
https://doi.org/10.1175/waf-d-20-0029.1
Publikováno v:
Journal of Climate. 32:4525-4545
A series of idealized prescribed soil moisture experiments is performed with the atmosphere/land stand-alone configuration of the Community Earth System Model, version 1, in an effort to find sources of predictability for high-impact stationary wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::092fd2608db70feb1172c39971e858b2
https://doi.org/10.1175/jcli-d-18-0823.1
https://doi.org/10.1175/jcli-d-18-0823.1
Autor:
Andrew P. Ouimette, Gordon B. Bonan, Elizabeth A. Burakowski, Ahmed B. Tawfik, Kimberly A. Novick, Lucie C. Lepine, Colin M. Zarzycki, Scott V. Ollinger
Publikováno v:
Theoretical and Applied Climatology. 138:115-133
Recent advances in variable-resolution (VR) global models provide the tools necessary to investigate local and global impacts of land cover by embedding a high-resolution grid over areas of interest in a seamless and computationally efficient manner.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f0ac63ed3582ecedc9ea35c0d91c854
https://doi.org/10.1007/s00704-019-02785-0
https://doi.org/10.1007/s00704-019-02785-0
Autor:
Gordon B. Bonan, Ahmed B. Tawfik, Colin M. Zarzycki, Andrew P. Ouimette, Kimberly A. Novick, Elizabeth A. Burakowski, Lucie C. Lepine, Scott V. Ollinger
Publikováno v:
Agricultural and Forest Meteorology. 249:367-376
Land cover and land use influence surface climate through differences in biophysical surface properties, including partitioning of sensible and latent heat (e.g., Bowen ratio), surface roughness, and albedo. Clusters of closely spaced eddy covariance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a63bf41e84ab5b71e6f664a4ce02e6d
https://doi.org/10.1016/j.agrformet.2017.11.030
https://doi.org/10.1016/j.agrformet.2017.11.030
Publikováno v:
Journal of Hydrometeorology. 18:2265-2283
The land surface state can be an important factor in the triggering of precipitation, whose depiction in Earth system models (ESMs) crucially relies on the representation of convective initiation. However, the sensitivity of land-cover change–preci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::531500cdf080b61f2e0a22dac5876849
https://doi.org/10.1175/jhm-d-17-0011.1
https://doi.org/10.1175/jhm-d-17-0011.1
Publikováno v:
Journal of Advances in Modeling Earth Systems. 9:1740-1758
A widely recognized issue found in most Earth system models is that of convective precipitation being triggered too early during the day over land, often resulting in persistent light rainfall. In an effort to address this issue, a model-consistent s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e145deab7a183ac1a95d5503207ec184
https://doi.org/10.1002/2016ms000866
https://doi.org/10.1002/2016ms000866
Publikováno v:
Journal of Hydrometeorology. 18:939-955
This paper uses 620 station years of hourly Canadian Prairie climate data to analyze the coupling of monthly near-surface climate with opaque cloud, a surrogate for radiation, and precipitation anomalies. While the cloud–climate coupling is strong,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fac1e32f660cff16959f8fc245a59698
https://doi.org/10.1175/jhm-d-16-0203.1
https://doi.org/10.1175/jhm-d-16-0203.1
Publikováno v:
Journal of Advances in Modeling Earth Systems. 9:536-547
Photosynthetic temperature acclimation is a commonly observed process that is increasingly being incorporated into Earth System Models (ESMs). While short-term acclimation has been shown to increase carbon storage in the future, it is uncertain wheth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ed1c9929f3829a55b2ba810a968b043
https://doi.org/10.1002/2016ms000732
https://doi.org/10.1002/2016ms000732