نتایج جستجو برای: global warming

تعداد نتایج: 462443  

2008
Hartmut H. Aumann Alexander Ruzmaikin Joao Teixeira

[1] We use five years of data from the Atmospheric Infrared Sounder (AIRS) to develop a correlation between the frequency of Deep Convective Clouds (DCC) and the zonal mean tropical surface temperature. AIRS data show that the frequency of DCC in the tropical oceans is very temperature sensitive, increasing 45% per 1 K increase of the zonal mean surface temperature. The combination of the sensi...

2013
Hélène Audusseau Sören Nylin Niklas Janz

Although changes in phenology and species associations are relatively well-documented responses to global warming, the potential interactions between these phenomena are less well understood. In this study, we investigate the interactions between temperature, phenology (in terms of seasonal timing of larval growth) and host plant use in the polyphagous butterfly Polygonia c-album. We found that...

2016
Elisa Seyboth Karina R. Groch Luciano Dalla Rosa Keith Reid Paulo A. C. Flores Eduardo R. Secchi

The reproductive success of southern right whale (Eubalaena australis) depends on body condition and, therefore, on foraging success. This, in turn, might be affected by climatically driven change in the abundance of the species main prey, krill (Euphausia superba), on the feeding grounds. Annual data on southern right whale number of calves were obtained from aerial surveys carried out between...

Journal: :Public understanding of science 2013
Nicholas Smith Helene Joffe

The present study utilises social representations theory to explore common sense conceptualisations of global warming risk using an in-depth, qualitative methodology. Fifty-six members of a British, London-based 2008 public were initially asked to draw or write four spontaneous "first thoughts or feelings" about global warming. These were then explored via an open-ended, exploratory interview. ...

2015
Peer J. Nowack N. Luke Abraham Amanda C. Maycock Peter Braesicke Jonathan M. Gregory Manoj M. Joshi Annette Osprey John A. Pyle

State-of-the-art climate models now include more climate processes which are simulated at higher spatial resolution than ever1. Nevertheless, some processes, such as atmospheric chemical feedbacks, are still computationally expensive and are often ignored in climate simulations1,2. Here we present evidence that how stratospheric ozone is represented in climate models can have a first order impa...

2015
Jeremy D. Shakun Peter U. Clark Feng He Nathaniel A. Lifton Zhengyu Liu Bette L. Otto-Bliesner

The ongoing retreat of glaciers globally is one of the clearest manifestations of recent global warming associated with rising greenhouse gas concentrations. By comparison, the importance of greenhouse gases in driving glacier retreat during the most recent deglaciation, the last major interval of global warming, is unclear due to uncertainties in the timing of retreat around the world. Here we...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Wolfgang Kiessling Carl Simpson Brian Beck Heike Mewis John M Pandolfi

The Last Interglacial (LIG; ca. 125,000 y ago) resulted from rapid global warming and reached global mean temperatures exceeding those of today. The LIG thus offers the opportunity to study how life may respond to future global warming. Using global occurrence databases and applying sampling-standardization, we compared reef coral diversity and distributions between the LIG and modern. Latitudi...

Journal: :Proceedings. Biological sciences 2015
Kevin C Rowe Karen M C Rowe Morgan W Tingley Michelle S Koo James L Patton Chris J Conroy John D Perrine Steven R Beissinger Craig Moritz

Resurveys of historical collecting localities have revealed range shifts, primarily leading edge expansions, which have been attributed to global warming. However, there have been few spatially replicated community-scale resurveys testing whether species' responses are spatially consistent. Here we repeated early twentieth century surveys of small mammals along elevational gradients in northern...

Journal: :Current Biology 2017
Mark J. Costello Sean Breyer

The mesopelagic or 'twilight zone' of the oceans occurs too deep for photosynthesis, but is a major part of the world's carbon cycle. Depth boundaries for the mesopelagic have now been shown on a global scale using the distribution of pelagic animals detected by compiling echo-soundings from ships around the world, and been used to predict the effect of global warming on regional fish production.

Journal: :Proceedings. Biological sciences 2000
E Ranta P Lundberg V Kaitala J Laakso

Characterizing population fluctuations and their causes is a major theme in population ecology. The debate is on the relative merits of density-dependent and density-independent effects. One paradigm (revived by the research on global warming and its relation to long-term population data) states that fluctuations in population densities can often be accounted for by external noise. Several empi...

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