Image from TERRA
Thu, 06 May 2021 10:00 EDT

Valley fever is a dangerous threat to human health – and cases are on the rise in the arid southwestern United States, as wind from increasing dust storms can transport the fungal spores that cause the disease. Valley fever is caused by the Coccidioides fungus, which grows in dirt and fields and can cause fever, rash and coughing. Using NASA resear

Image from TERRA
Fri, 23 Apr 2021 11:00 EDT

In a decade filled by record-breaking events including raging wildfires, numerous hurricanes, unseasonal flooding and historically cold temperatures, NASA has continued to learn more about how the planet is changing and the effect it has on Earth’s systems.

Image from TERRA
Tue, 20 Apr 2021 10:49 EDT

Fertilizers used in farming contain high amounts of nutrients, such as phosphorous, to help crops grow. But these same nutrients can cause unwanted plant growth and potentially harm ecosystems miles away if agricultural runoff flows into nearby rivers, lakes, or coastal waters.

Month: March 2014

Terra, among a  satellites  from many nations, joined the effort in the search for Malaysian Airlines Flight MH-370. Read more

NASA image courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Adam Voiland.

Rarely do weather patterns and satellite overpass schedules align to provide cloud-free views of Western Europe in the spring. However, a high-pressure pattern kept skies spectacularly clear over the Iberian Peninsula and east into France and Germany as the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite passed over on March 8, 2014. The cloud-free area began to emerge on March 5 and persisted through March 11. Explore Worldview—a near-real time browser from the MODIS Rapid Response Team—to see a wider view and how the cloud-free area changed over time. Read more

NASA image courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Adam Voiland.

      NASA Earth Observatory images by Jesse Allen, using MODIS data from the Land Processes Distributed Active Archive Center (LPDAAC). Caption by Michael Carlowicz.

For many residents of North America, the winter of 2013-14 has felt like one of the coldest in many years. Waves of Arctic air brought extended periods of cold weather and above-average snowfall to the middle and eastern portions of the United States and Canada. Seven Midwestern states had one of their top-ten coldest winters, and the Great Lakes were chilled until they reached nearly 91 percent ice cover. Even portions of Mexico and Central America were cooler than normal. Read More

NASA Earth Observatory images by Jesse Allen, using MODIS data from the Land Processes Distributed Active Archive Center (LPDAAC). Caption by Michael Carlowicz.

NASA images courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Holli Riebeek.

A low-pressure system brought strong winds—gusting to 55 miles (85 kilometers) per hour—to the Southern Plains on March 18, 2014. The winds picked up exposed soil from the parched landscape, resulting in a large dust storm that covered parts of Colorado, Kansas, Oklahoma, New Mexico, and Texas. The storm was the second in the past week to sweep across the region with similar wind patterns.

The Moderate Resolution Imaging Spectroradiometer (MODIS) acquired this image of the storm on March 18. The top image shows the dust over the Texas Panhandle at 1:15 p.m. Central Daylight Time from the MODIS instrument on NASA’s Terra satellite. Read more

NASA images courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Holli Riebeek.

NASA image courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Holli Riebeek.

When the winds of winter sweep across West Africa, temperatures drop and skies turn yellow. Prevalent from November to March, the harmattan is a desert wind that blows across the Sahara Desert from the northeast or the east, usually as a result of a high pressure system over the northwestern Sahara. Harmattan winds pick up dust and darken skies.

A harmattan dust storm was blowing on February 28, 2014, when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired this image. The yellow dust was concentrated largely over the Cape Verde Islands, where the mountain topography created swirling eddies and triangular wakes in the dust cloud. West Africa frames the right edge of the image, and distinct plumes of dust moved west from Senegal and Mauritania. Read more

NASA image courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Holli Riebeek.