Climate scientists and climate models are in agreement that hydro-climate around the world will change as a result of rising greenhouse gas emissions. Considering radiative forcing components only, dry places should get drier and wet ones wetter. Are these changes already underway, however, and what is the significance of these trends vs natural variability?
Project Director Ron Smith explains the nature of gravity waves, how they propagate high into the stratosphere and then collapse, creating Brewer-Dobson circulation cells that influence global weather. His international team of researchers spent most of the summer flying the night skies New Zealand to study the phenomenon.
Damon Wells Professor of Geophysics Ron Smith is spending most of this summer at 40,000’ elevation, flying straight into a phenomenon that controls global weather. For the…
A recent study published in Global and Planetary Change demonstrates cost-saving opportunities in the otherwise computationally expensive process of high-resolution climate modeling. General Circulation Models (GCMs, occasionally also referred to as ‘global climate models’) are extremely useful tools used to understand how our climate system works. The models use mathematical equations to describe the physics of the oceans and atmosphere. These equations quantify, for example, how hot air tends to rise (the reason hot air balloons fly) and how the wind flows from high-pressure areas to l
Satellite images allow Earth System scientists to monitor changes in vegetation, map species distributions, and even measure surface temperatures. The amount of data available for such efforts is enormous; the U.S. government’s Moderate Resolution Imaging Spectro-radiometers (MODIS), whose polar orbits circle …
Modeling ecological processes at global scales is complicated by the fact that available underlying spatial and temporal data often incorporate enormous uncertainty. For example, the WorldClim data set (which has been cited over 2000 times) offers 1-kilometer resolution globally whether the pixel …
Yale Professor Ken Gillingham welcomes participants in this YCEI sponsored workshop that brings together climate change scientists and economists whose modeling efforts hinge on the need to accommodate anticipated climate change in a warming world.
He sets the stage for the day’s conversations by reviewing the just released IPCC 5th Assessment Report, some of its findings, and the unique language that the IPCC uses to describe uncertainty in climate sensitivity, the key parameter that concerns economists and climate scientists.
A farmer in the central USA and a fisherman in Maine will not experience global warming in the same way. Dynamic interactions between cities, deserts, and forests mean that a rise in the global mean temperature doesn’t imply uniform warming of the planet. As climate change advances, wind patterns and ocean currents will shift; the sea may swell in some places, while rivers run dry in others. Global climate models make predictions on too broad a scale to recognize many of these effects, leaving policy makers unable to prepare their communities.
Yale School of Forestry and Environmental Sciences’ Professor Peter Raymond was lead author on “Global Carbon Dioxide Emissions from Inland Waters”, published in Nature. An ecosystem ecologist,” Raymond tracks carbon, the element most closely associated with life, as it makes its way between living
Linda Mearns has served as lead or co-convening lead author on several Intergovernmental Panel on Climate Change reports and shared in the 2007 Nobel Peace prize. Mearns is director of the Weather and Climate Impacts Assessment Science Program and a senior scientist in NCAR’s Institute for Mathematics Applied to Geosciences.