Climate Change

formerly “Climate Science” this has been updated in recognition of the fact that ALL of our articles, events, etc. involve climate sciience.  ”Climate change” is intended to suggest changing elements of the climate: e.g., shifts in global oceanic and atmospheric circulation and ensuing changes to temperature, precipitation, groundwater levels, saltwater intrusion.

Meteorological Influences on Lyme Disease

Over the past two decades Lyme disease has emerged as the most common vector-borne disease in the United States. It is currently endemic in at least 12 states, from Virginia in the South to Maine in the North, and Minnesota and Wisconsin in the West. The majority of cases are believed to be transmitted by nymphal ticks during late spring and early summer months of June, July, and August. Control methods currently focus on the…

South Australia Drought Attributed to Climate Change

Recent precipitation declines over the poleward and western margins of subtropical dry zones from North America to Australia are consistent with a reorganization of atmospheric dynamics attributable to global warming. But are these droughts attributable to anthropogenic forcings like increased GHG, aerosols and ozone, or are they within the realm of natural variability?  The answer is not always clear. In the case of California…

Fiamma Straneo: North Atlantic Warming and the Retreat of Greenland's Glaciers

Models do ‘okay’ at predicting changes in surface mass balance of Greenland’™s ice sheets, says Fiamma Straneo. They don’t do so well, and therefore are not very useful, when it comes to predicting the accelerated melting that is now occurring and which, she says, now accounts for about one-fourth of global sea level rise. In this presentation she reviews her studies of what is happening in that dynamic space at the edge of the ice sheets where atmosphere, ocean and glacier all come together, and the various mechanisms proposed as contributing to ice sheet loss.

Dennis Darby: What Precise Source Tells Us About Arctic Sea Ice

Sedimentation rates in parts of the Arctic Ocean are surprisingly high with 1-2% of that sediment originating from ‘dirty ice,’ says Professor Emeritus Dennis Darby. He explains various processes that govern the formation of sea ice and how sediment can be entrained in it, the processes and routes by which ‘dirty ice’ is transported throughout the Arctic, and his data base of 38,000 different samples permits tracking sediment collected from the sea floor back to its point of origin.

Jennifer Francis: Rapid Arctic Warming and Changing Mid-Latiitude Weather: Is there a connection?

The workshop’s first presentation was a status report on arctic climate from Dr. Jennifer Francis. In the past 30 years, she says, aerial coverage of sea ice has been reduced by half. Ice volume had declined 70% over the same period. She offers a novel hypothesis that Arctic amplification “regional warming in excess of the global average” causes the jet stream to slacken producing meanders that ‘lock in’ and cause aberrant weather for prolonged periods of time. Satellite imagery and this past winter’s ‘polar vortex’ and extended drought in the W.

Dendrochronology's "Divergence Problem" Explained?

A new study by Alexander Stine and Peter Huybers offers strong evidence that reduced light availability (“global dimming”) explains the apparent lack of tree-ring evidence in many Arctic regions for the recent warming observed in instrumental records there. Dendroclimatology uses measurements of the yearly growth width and density of tree rings to reconstruct changes in past climate. The …

Studying the ecological roles of top predators and the impacts of climate change on predator-prey interactions and ecosystem dynamics

I study the effects of climate change on animals, the interactions they have with each other and plants, and the cascading impacts of climate change on humans and how we live. This research is important because the climate is changing rapidly and we need to understand how ecosystems will respond so that we can adapt to the new realities of a warming world.

Belowground biotic interactions and how they respond to, and influence climate change via climate-ecosystem carbon feedbacks.

My research interests include soil, ecosystem and climate change ecology. Specifically, my work focuses on biotic interactions and how they respond to, and influence climate change via climate-ecosystem carbon feedbacks. My PhD work, conducted at Cardiff University, centered on the topic of soil biodiversity. This work advanced our theoretical and mechanistic understanding of how top-down processes control soil biodiversity and nutrient cycling.

Wind and Topographic Irregularities Influence Antarctic Melting

Loss of mass from ice sheets contributes to rising sea level. To understand the contributions of ice-sheets to sea level rise we must understand the spatial and temporal variability of ocean-driven melting, which has accelerated over recent decades.  Dutrieux and colleagues used observations and results from numerical modeling to show the case of Pine Island Glacier in the Amundsen Sea in west…

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