Climate

The cover of the latest IPCC report "Climate Change 2014, Mitigation of Climate Change," as its present at a press conference in Berlin on Sunday.  JOHN MACDOUGALL / AFP/GETTY IMAGES

In wake of latest IPCC report, activists say all new investments should be in energy efficiency and renewables, not oilsands and pipelines.

thestar.com - by Raveena Aulakh - April 13, 2014

publications.mcgill.ca - April 12, 2014

Statistical analysis rules out natural-warming hypothesis with more than 99 per cent certainty

An analysis of temperature data since 1500 all but rules out the possibility that global warming in the industrial era is just a natural fluctuation in the earth’s climate, according to a new study by McGill physics professor Shaun Lovejoy.

The study, published online on April 6, in the journal Climate Dynamics, represents a new approach to the question of whether global warming in the industrial era has been caused largely by man-made emissions from the burning of fossil fuels. . .

. . . Lovejoy’s study applies statistical methodology to determine the probability that global warming since 1880 is due to natural variability. His conclusion: the natural-warming hypothesis may be ruled out “with confidence levels great than 99 per cent, and most likely greater than 99.9 per cent.”

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odi.org.uk - March 2014

Water will be the main channel through which the impacts of climate change will be felt by people, ecosystems and economies. However, predicting impacts on the availability and quality of freshwater resources, and on water-dependent services and sanitation, remains difficult.

While there is a high level of confidence in the processes linking emissions to global warming, much less is known about how warming will affect changes in rainfall, runoff, groundwater recharge and climate extremes.

This reflects challenges with the downscaling of climate models, but also the significance of intervening factors, such as changes in land cover, which may have a greater influence on local systems and services than climate change. In general, the level of confidence in climate change projections decreases as their potential utility for making decisions on how to adapt increases.

This report presents the findings of research into the risks to delivery of WASH results posed by climate change in Africa, drawing on rapid case study reviews of WASH programming in Malawi, Sierra Leone and Tanzania. A separate Case Study Report provides further detail on country background and findings.

Smoke billowing from a plant in Tokyo Bay, Japan. Government officials and scientists are gathered in Yokohama this week ahead of the launch of the IPCC report. Photograph: Franck Robichon/EPA

Leaked text of blockbuster report says changes in climate have already caused impacts on natural and human systems

theguardian.com - by Suzanne Goldenberg - March 28, 2014

Climate change has already left its mark "on all continents and across the oceans", damaging food crops, spreading disease, and melting glaciers, according to the leaked text of a blockbuster UN climate science report due out on Monday.

Government officials and scientists are gathered in Yokohama this week to wrangle over every line of a summary of the report before the final wording is released on Monday – the first update in seven years.