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The ongoing El Niño weather pattern in the Asia and Pacific is likely to be one of the strongest since 1998 and will continue into early 2016, according to a new United Nations advisory, which urges regional cooperation for early warning, in-season mitigation, and long-term adaptation strategies to curb climate risk.
“The impact of the 2015-2016 El Niño could be even more severe in certain locations, such as the uplands of Cambodia, central and southern India, eastern Indonesia, the central and southern Philippines, central and northeast Thailand...” stated the Third Advisory Note on El Niño issued jointly by the UN Economic and Social Commission for Asia and the Pacific (ESCAP) and the Regional Integrated Multi-Hazard Early Warning System for Africa and Asia (RIMES).
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Lawrence Livermore researchers and collaborators have found that most climate models overestimate the increase in global precipitation due to climate change.
Specifically, the team looked at 25 models and found they underestimate the increase in absorption of sunlight by water vapor as the atmosphere becomes moister, and therefore overestimate increases in global precipitation.
The team found global precipitation increase per degree of global warming at the end of the 21st century may be about 40 percent smaller than what the models, on average, currently predict.
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Is Paris the beginning of the end for coal? Coal burning is declining fast in both of the world's two largest carbon dioxide emitters, China and the the United States, with resulting declines in the emissions of both countries. The fuel looks incompatible with a world that warms by no more than two degrees Celsius, bringing calls for its rapid phaseout as the world is "decarbonized."
But, with or without a deal here in Paris later this week, will the calls be heeded? Has the demise of King Coal been greatly exaggerated?
In the U.S., "coal has gone from boom to bust," says Michael Brune, executive director of the Sierra Club. The black stuff's share of electricity generation has sunk from 53 percent to 35 percent in just five years.
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Clouds can increase warming in the changing Arctic region more than scientists expected, by delivering an unexpected double-whammy to the climate system, according to a new study by researchers at NOAA, the University of Colorado Boulder and colleagues.
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Clouds can increase warming in the changing Arctic region more than scientists expected, by delivering an unexpected double-whammy to the climate system, according to a new study by researchers at NOAA, the University of Colorado Boulder and colleagues.
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It's National Pear Month and the perfect time to enjoy juicy, sweet pears. If that isn't reason enough to fill your shopping basket, there's another reason to add this fruit to your grocery list. A new study, 'Fresh Pear Consumption is Associated with Better Nutrient Intake, Diet Quality, and Weight Parameters in Adults: National Health and Nutrition Examination Survey 2001-2010,' published in Nutrition and Food Science, revealed new information regarding the health benefits of pear consumption.1 Of particular interest given the high rates of obesity in the United States, the study found that adult pear consumers had a lower body weight than non-pear consumers and they were 35 percent less likely to be obese.
The epidemiologic study, led by Carol O'Neil of the Louisiana State University Agricultural Center, used a nationally representative analytic sample to examine the association of fresh pear consumption with nutrient intake, nutrient adequacy, diet quality, and cardiovascular risk factors in adults.
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Taking a deep breath might be a bit harder for children exposed early in life to a widely used class of pesticides in agriculture, according to a new paper by UC Berkeley researchers.
The greater the pesticide exposure, the smaller the lungs, a new study finds.
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"Two things are happening," said study co-author William D'Andrea, a paleoclimatologist at Columbia University's Lamont-Doherty Earth Observatory. "One is you have a very gradual decrease in the amount of sunlight hitting high latitudes in the summer. If that were the only thing happening, we would expect these glaciers to very slowly be creeping forward, forward, forward. But then we come along and start burning fossil fuels and adding carbon dioxide to the atmosphere, and glaciers that would still be growing start to melt back because summer temperatures are warmer."
Glaciers are dynamic and heavy. As a glacier moves, it grinds the bedrock beneath, creating silt that the glacier's meltwater washes into the lake below. The larger the glacier, the more bedrock it grinds away. Scientists can take sediment cores from the bottom of glacier-fed lakes to see how much silt and organic material settled over time, along with other indicators of a changing climate. They can then use radiocarbon dating to determine when more or less silt was deposited.
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As representatives from more than 190 countries convene in France for the second week to address ways to slow global warming, an MIT-led team has published a paper outlining a set of options for incorporating equity considerations in a national Emissions Trading System (ETS) for China that could reduce carbon emissions while minimizing economic impact on poorer or less-developed regions.
The paper, “Equity and Emission Trading in China,” published in the journal Climatic Change, outlines a sophisticated menu aimed at Chinese policymakers showing how the burden of reducing carbon emissions could be shared or divided across the country’s provinces under a market-based carbon pricing system.
“Emission trading systems have been shown to be highly effective when they are allowed to work, but one of the toughest challenges involves how to distribute the cost,” said lead author Valerie Karplus, Assistant Professor of Global Economics and Management at the MIT Sloan School of Management. “We compare alternative schemes for allocating emissions rights that can effectively de-couple who pays for reductions from where the reductions actually occur.”
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Government ministers arrive in Paris today as climate talks enter their second week. The ministers add high-level influence to the climate negotiations and can help unlock critical elements of a new climate deal.
“It’s going to be quite a sprint for ministers to secure a strong deal by Friday,” said Tasneem Essop, head of WWF’s delegation to the COP21 climate talks. “The French presidency now has the responsibility to take us to the finish line.”
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