Siberian Wildfires, Solstices, and Sea Level Rise
- Published on Monday, 02 July 2012 00:01
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Also included are items covering one of the largest landslides in history and the slow but sure change in tundra vegetation cover.
Siberia Burns – Originally Published by NASA Earth Observatory
Wildfires raged throughout central Russia, charring more than 8,000 hectares and prompting Russian officials to declare a state of emergency in numerous regions. Images of the fires, which were ignited by lightning, campfires, and out of control agricultural burns, were captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite.
Warming Climate Sees Tundra Turn to Forest – Originally Published by ScienceDaily
The vegetation of the 100,000 km2 northwestern Eurasian tundra is slowly changing from shrubbery to trees as the climate warms. Using satellite imagery, field sampling, and expert observation scientists have tracked the changes over the past decades, noting an 8-15% increase in willow and alder plants over 2 meters in height. The change in vegetation – itself brought about by a warming climate – in turn affects warming by altering albedo, replacing light-reflecting snow cover with light-absorbing tree cover.
Seeing Solstices and Equinoxes From Space – Originally Published by EUMETSAT
As the Solstice sails past us, those of us in the northern hemisphere prepare for Summer, while those in the southern hemisphere hunker down for Winter. EUMETSAT’s Meteosat Second Generation satellites brings us images of the “midnight sun” – visible at times around the Solstice when the sunlight is reflected off the Northern polar region – as well as a collection of images showing the change in the Sun’s illumination of the Earth during each solstice and equinox through the year.
Australia Creates World’s Largest Expanse of Marine Reserves – Originally Published by ENS
Following 12 months of public consultations and 250 meetings across the country, Australia’s government released final maps outlining the country’s expanded marine preserve system. The newly expanded system will now cover more than 3.1 million square kilometers of sensitive marine habitat. Despite these large steps towards protection, some groups say they will continue to work to include areas left out of the preserve system.
Sea-level Rise Accelerates Faster On US East Coast – Originally Published by New Scientist
Looking at tide gauge data from 1950 to 2009, scientists at the United States Geological Survey have found that sea levels off the eastern coast of the United States is rising four times as fast as the global average. Climate models in the past have shown that the east coast could be a “hot spot” for rising seas, this study simply confirms those models. Some say this could be a sign that the Atlantic Meridional Overturning Circulation – responsible for Western Europe’s moderate climate – is slowing down.
A Monster Slide – Originally Published by NASA Earth Observatory
NASA’s Earth Observatory chronicles one of the largest landslides in recorded history when more than 3.5 million cubic feet of boulders, snow, water, and sediment blocked the path of the Yigong River in Tibet. The slide created an earthen dam more than 90 feet tall, which promptly blocked the river. The dam backed up the river for two months before it collapsed, causing catastrophic flooding downstream. The Enhanced Thematic Mapper Plus (ETM+) on the Landsat 7 satellite captured images before, during, and after the dam was formed.
NOAA Predicts a Near-Normal 2012 Atlantic Hurricane Season – Originally Published by ScienceDaily
The United States National Oceanic and Atmospheric Association (NOAA) announced that oceanic and atmospheric conditions favor a “near-normal” hurricane season for 2012. The hurricane season, which started on June 1st and lasts for six months, NOAA’s Climate Prediction Center says there is a 70% chance of nine to 15 named storms this season.
Plants May Be Able To ‘Hear’ Others – Originally Published by New Scientist
It’s been long accepted that plants utilize many of the same senses that humans do, but the idea that they can hear has never gained a foot hold. Until now. A study out of the University of Western Australia shows that chilli peppers may have a hitherto-unrecognized sense which allows them to “hear” signals from other plants in their vicinity.
Volcanoes, Clouds, and Swirling Winds – Originally Published by NASA Earth Observatory
This natural-color image was acquired on April 27, 2012, by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite over Zavodovski Island, a tiny uninhabited island in the South Sandwich Islands. It shows the interplay of clouds, islands, winds, and low-level volcanic emissions from Zavodovski’s volcanic Mount Curry in the South Atlantic.
Court Upholds U.S. EPA’s Right to Limit Greenhouse Gases – Originally Published by ENS
Following contention from 15 states, the US Environmental Protection Agency’s (EPA) legal authority to regulate greenhouse gases under the Clean Air Act was unanimously upheld by U.S. Court of Appeals for the District of Columbia Circuit. The fifteen states challenged the EPA’s findings that greenhouse gases endanger human health and safety, saying the agency violated the law by relying almost exclusively on external data.
In order to unleash the full potential of Geographical Information Systems (GIS), better interoperability is needed between the traditional GIS and those in a community we sometimes refer to as the “fluid Earth systems” or FES, which pertains mostly to oceanography and atmospheric sciences. This issue is becoming increasingly important… Read More +Project Team: U.S. Disasters Team Team Location: NASA Stennis Space Center, Hancock County, Mississippi
NASA Applied Sciences’ DEVELOP National Program: Training the Next Generation of Remote Sensing Scientists