Results 91 to 100 of about 12,830 (245)

Shock metamorphic effects in Itokawa phosphates: A comparison with megaregolith‐derived meteorites

Meteoritics &Planetary Science, EarlyView.
Abstract Returned regolith samples from the asteroid Itokawa provide a unique opportunity to compare shock metamorphic effects in unconsolidated regolith materials with those preserved in lithified meteorites, that is, megaregolith. We analyzed four Itokawa particles (Ueda—RA‐QD02‐0519, Narahara—RA‐QD02‐0573, Domon—RA‐QD02‐0588, Ishiuchi—RX‐MD03‐0212 ...
E. Dobrică, A. N. Krot, A. J. Brearley
wiley   +1 more source

Reduced snow cover at the alpine treeline: resistance and recovery of saplings

New Phytologist, EarlyView.
Summary At high elevations, tree saplings and shrubs are usually protected by mid‐winter snow cover, although climate change is expected to extend the snow‐free (SF) period. Exposure to winter drought, freeze–thaw events and freezing temperatures will therefore increase, inducing damages to the hydraulic system and to living cells, resulting in reduced
Katline Charra‐Vaskou, Guillaume Charrier, Andrea Ganthaler, Thierry Améglio, Stefan Mayr   +4 more
wiley   +1 more source

Résolution du problème de la stéréophotométrie non calibrée par estimation de l'intensité des éclairages [PDF]

, 2013
Nous présentons une nouvelle méthode de résolution du problème de la stéréophotométrie non calibrée dans le cadre lambertien, fondée sur l'hypothèse que tous les éclairages ont la même intensité, couplée à l'estimation de cette intensité.
Durou, Jean-Denis, Queau, Yvain
core   +1 more source

Impact of emerging compound droughts on forests: A water supply and demand perspective

Plant Biology, EarlyView.
This review examines the physiological and ecological responses of trees to emerging compound droughts from a water demand and supply perspective, as well as the role of acclimation and consequences for ecosystem‐level functions. Abstract The intensification of climate change‐induced drought results in unprecedented tree and forest die‐offs worldwide ...
C. Werner, M. Bahn, T. E. E. Grams, C. Grossiord, S. Haberstroh, G. Lenczner, D. Tuia, H. Vallicrosa   +7 more
wiley   +1 more source

Grassland albedo as a nature-based climate prospect: the role of growth form and grazing

Environmental Research Letters
Nature-based solutions for mitigating climate change focus largely on land management to reduce carbon emissions and enhance carbon sequestration. Tree planting, commonly advocated for carbon offset, threatens grassland biodiversity and may induce ...
S McGregor, J P G M Cromsigt, M te Beest, J Chen, D P Roy, H-J Hawkins, G I H Kerley   +6 more
doaj   +1 more source

Simulated cold bias being improved by using MODIS time-varying albedo in the Tibetan Plateau in WRF model

Environmental Research Letters, 2018
Systematic cold biases exist in the simulation for 2 m air temperature in the Tibetan Plateau (TP) when using regional climate models and global atmospheric general circulation models.
X Meng, S Lyu, T Zhang, L Zhao, Z Li, B Han, S Li, D Ma, H Chen, Y Ao, S Luo, Y Shen, J Guo, L Wen   +13 more
doaj   +1 more source

A climate‐sensitive tropical urbanism under extreme heat†

Singapore Journal of Tropical Geography, EarlyView.
Tropical urban dwellers face twin climate challenges that impinge on their quality of life: climate overheating and the urban heat island (UHI). The latter superimposed on the former to lead to high levels of thermal discomfort, carbon and energy consequences.
Rohinton Emmanuel
wiley   +1 more source

The sub-seasonal and interannual spatio-temporal variability of bare-ice albedo of Abramov Glacier, Kyrgyzstan

Journal of Glaciology
As snowlines retreat, the bare ice of Central Asian glaciers is increasingly exposed to short-wave radiation and high temperatures. The importance of bare-ice albedo for glacier melt rates is thus rising. Little is known about the variability of bare-ice
Anouk Volery, Kathrin Naegeli, Martina Barandun   +2 more
doaj   +1 more source

Parametric Sensitivity of Hemispheric Albedo Symmetry Weakly Constrains Shortwave Cloud Radiative Feedbacks in the Community Atmosphere Model Version 6

Geophysical Research Letters
Earth's albedo is symmetric between the northern and southern hemispheres (NH and SH, respectively) because SH clouds compensate for higher NH clear‐sky albedo, a feature that climate models have difficulty capturing.
Aiden Jönsson, Maria Rugenstein, Frida A.‐M. Bender, Daniel McCoy, Trude Eidhammer   +4 more
doaj   +1 more source

La détermination de la constante solaire par Claude Pouillet [PDF]

, 2008
National audienceDans la recherche des phénomènes physiques qui régissent les caractéristiques du climat global, Claude Pouillet a apporté une contribution importante en déterminant expérimentalement la "constante solaire", c'est-à-dire la valeur du flux
Dufresne, Jean-Louis
core   +2 more sources