Tuesday , December 12 2017

Earth

Climate Change Threatens Boreal Coniferous Forests

Impending change for the dark taiga: Global warming is causing an increase in the frequency of forest fires in boreal coniferous forests. This means that deciduous trees, which generally only appear as pioneer plants, could potentially dominate the landscape in the long run. Credit: MPI of Biochemistry, S. Tautenhahn New research from the Max Planck Institute of Biochemistry reveals that ... Read More »

New Research Shows Long-Term Global Warming Needs External Drivers

Earth’s atmosphere viewed from the International Space Station. New research from NASA and Duke University provides new evidence that natural cycles alone aren’t sufficient to explain the global atmospheric warming observed over the last century. A study by scientists at NASA’s Jet Propulsion Laboratory in Pasadena, California, and Duke University in Durham, North Carolina, shows, in detail, the reason why ... Read More »

New ISS Image of the Pacific Northwest and an Aurora

This new image is from astronauts aboard the International Space Station shows an aurora and the Pacific Northwest. NASA astronaut Scott Kelly and ESA astronaut Tim Peake shared a series of aurora photographs taken from the International Space Station on January 20, 2016. Kelly (@StationCDRKelly) wrote, “#goodmorning #aurora and the Pacific Northwest! #YearInSpace” and Peake (@astro_timpeake) followed up with, “Getting ... Read More »

Independent Analyses Reveal 2015 Surface Temperatures Are the Warmest on Record

&nbs 2015 was the warmest year since modern record-keeping began in 1880, according to a new analysis by NASA’s Goddard Institute for Space Studies. The record-breaking year continues a long-term warming trend — 15 of the 16 warmest years on record have now occurred since 2001. Credits: Scientific Visualization Studio/Goddard Space Flight Center According to independent analyses by NASA and ... Read More »

El Niño Continues to Grow, Set to Bear Down on U.S.

The latest satellite image from the U.S./European Ocean Surface Topography Mission (OSTM)/Jason-2 mission shows that the current strong El Niño brewing in the Pacific Ocean shows no signs of waning. El Niño 2015 has already created weather chaos around the world. Over the next few months, forecasters expect the United States to feel its impacts as well. The latest Jason-2 ... Read More »

Yale Researchers Find a Soft Spot in the Nazca Plate

Using land-based seismic stations, researchers from Yale University found that part of the Nazca Plate weakened and deformed as it bent and slid under the adjoining South American Plate. The Earth’s tectonic plates may be more flexible than previously thought as they slide underneath each other and dive deep below the surface, according to new observations from an international geophysics ... Read More »

Temperature of Ancient Seas May Shape Global Climate

Map of modern surface ocean temperatures and paleodata sites with data going back to 5 million years and used in this study. The new record comes from site 1125 in the South Pacific. Arrows indicate the surface temperature gradients explored by the researchers. In a newly published study, scientists from Yale University detail the differences in ocean temperatures over the ... Read More »

2015 Antarctic Ozone Hole Larger Than Recent Years

This false-color image shows ozone concentrations above Antarctica on October 2, 2015. Credits: NASA/Goddard Space Flight Center Scientists from NASA and the National Oceanic and Atmospheric Administration reveal that the 2015 Antarctic ozone hole area was larger and formed later than in recent years. On October 2, 2015, the ozone hole expanded to its peak of 28.2 million square kilometers ... Read More »

New Research Shows Greenland Ice Sheet Movement is Decreasing Despite Warming

A river flows in the western region of the Greenland Ice Sheet. Credits: Andrew Sole, University of Sheffield A newly published study from the University of Edinburgh shows that the movement of the southwest portion of the Greenland Ice Sheet that terminates on land has been slowing down despite decades of increasing temperatures and surface melting. The study is published ... Read More »

New NASA Study Shows That Hydrofluorocarbons Contribute to Ozone Depletion

A global representation of the projected impacts of hydrofluorocarbons (HFC) on ozone levels at the various latitudes in 2050. The small but measurable amount of ozone loss is quantified in Dobson units, the most common unit for measuring ozone concentration. Over Earth’s surface, the ozone layer’s average thickness is about 300 Dobson units, or three millimeters. Credits: NASA’s Goddard Space ... Read More »