• Aardvarks' tragic fate points to worrying consequences for wildlife as a result of climate change

    The aardvark, a highlight for anyone on a game-viewing African safari, will become increasingly rare as the world warms and dries, and the consequences go well beyond a decline in aardvark safari encounters.

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  • Understanding tropical rainfall

    The Intertropical Convergence Zone (ITCZ), also known as the doldrums, is one of the dramatic features of Earth’s climate system. Prominent enough to be seen from space, the ITCZ appears in satellite images as a band of bright clouds around the tropics. Here, moist warm air accumulates in this atmospheric region near the equator, where the ocean and atmosphere heavily interact. Intense solar radiation and calm, warm ocean waters produce an area of high humidity, ascending air, and rainfall, which is fed by converging trade winds from the Northern and Southern Hemispheres. The convected air forms clusters of thunderstorms characteristic of the ITCZ, releasing heat before moving away from the ITCZ — toward the poles — cooling and descending in the subtropics. This circulation completes the Hadley cells of the ITCZ, which play an important role in balancing Earth’s energy budget — transporting energy between the hemispheres and away from the equator.

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  • 'Omnipresent' effects of human impact on England's landscape revealed by University of Leicester geologists

    Concrete structures forming a new, human-made rock type; ash particles in the landscape; and plastic debris are just a few of the new materials irreversibly changing England’s landscape and providing evidence of the effects of the Anthropocene, the research suggests.

    The research, which is published in the journal Proceedings of the Geologists’ Association, has been conducted by geologists Jan Zalasiewicz, Colin Waters, Mark Williams and Ian Wilkinson at the University of Leicester, working together with zoologist David Aldridge at Cambridge University, as part of a major review of the geological history of England organised by the Geologists’ Association. 

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  • NASA's Aqua Satellite Tracks Typhoon Nesat Headed Toward Taiwan

    NASA’s Aqua satellite passed over Typhoon Nesat as the storm continued moving north toward Taiwan.   

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  • NASA Sees Hilary Weaken to Tropical Storm Status

    NASA’s Aqua satellite provided infrared imagery Hurricane Hilary that showed it weakening. Within 12 hours the storm weakened to a tropical storm.

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  • Study: Indian monsoons have strengthened over past 15 years

    An MIT study published today in Nature Climate Change finds that the Indian summer monsoons, which bring rainfall to the country each year between June and September, have strengthened in the last 15 years over north central India.

    This heightened monsoon activity has reversed a 50-year drying period during which the monsoon season brought relatively little rain to northern and central India. Since 2002, the researchers have found, this drying trend has given way to a much wetter pattern, with stronger monsoons supplying much-needed rain, along with powerful, damaging floods, to the populous north central region of India.

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  • NASA-NOAA Satellite Spots Tropical Storm Nesat Being Sheared

    NASA-NOAA's Suomi NPP satellite captured an image of Tropical Storm Nesat being affected by vertical wind shear as it parallels the east coast of the Philippines.

    On July 27, 2017 at 12:24 a.m. EDT (0424 UTC) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite provided a visible-light image of Tropical Storm Nesat as it continued moving north in the Philippine Sea. The VIIRS image showed thunderstorms circling the low-level center and a band of thunderstorms northwest of the center, running parallel to the coast of the Northern Philippines. The image also showed that the bulk of Nesat's clouds were being pushed to the southwest as a result of northeasterly vertical wind shear.

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  • Projected Precipitation Increases Are Bad News for Water Quality

    If climate change is not curbed, increased precipitation could substantially overload U.S. waterways with excess nitrogen, according to a new study from Carnegie’s Eva Sinha and Anna Michalak and Princeton University’s Venkatramani Balaji published by Science. Excess nutrient pollution increases the likelihood of events that severely impair water quality. The study found that impacts will be especially strong in the Midwest and Northeast.

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  • Researchers develop model to predict and prevent power outages using big data

    High-speed winds during a thunderstorm may cause trees around an electric grid to crash into the distribution system feeders causing an outage in that area. Currently, most utility companies diminish such accidents by scheduling regular tree-trimming operations. This effort is costly and is based on a rotational approach to different service areas, which may take months and sometimes years before all trees are trimmed.

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  • Climate change to push Ethiopian coffee farming uphill

    Relocating coffee areas, along with forestation and forest conservation, to higher altitudes to cope with climate change could increase Ethiopia‘s coffee farming area fourfold, a study predicts.

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