NASA GLOBE Observer dicit:
A new tool in the GLOBE Observer app allows citizen scientists to take tree height measurements, information that can be compared with data from NASA missions.
Video Credit: NASA
Archive for the Earth Science category
NASA dicit:
Every year, sea ice fluctuates through the seasons, growing in the winter and shrinking in the summer. This year, Arctic sea ice reached its annual maximum on March 13, 2019. It wasn’t a record low, but it continued a trend of declining sea ice maximums and minimums.
Video Credit: NASA Goddard
NASA dicit:
“The 2015-2016 El Niño event brought weather conditions that triggered regional disease outbreaks throughout the world, according to a new NASA study that is the first to comprehensively assess the public health impacts of the major climate event on a global scale.
El Niño is an irregularly recurring climate pattern characterized by warmer than usual ocean temperatures in the equatorial Pacific, which creates a ripple effect of anticipated weather changes in far-spread regions of Earth. During the 2015-2016 event, changes in precipitation, land surface temperatures and vegetation created and facilitated conditions for transmission of diseases, resulting in an uptick in reported cases for plague and hantavirus in Colorado and New Mexico, cholera in Tanzania, and dengue fever in Brazil and Southeast Asia, among others.”
Video Credit: NASA Goddard/LK Ward
NASA dicit:
“On February 27, 2019, we celebrated five years in orbit for the NASA/JAXA Global Precipitation Measurement mission, or GPM. Launched from Japan on February 27, 2014, GPM has changed the way we see precipitation. It has provided unprecedented three-dimensional views of precipitation light rain to intense thunderstorms. To mark its five years, we’re looking back at five big moments in GPM’s history of observing storms.”
Video Credit: NASA Goddard/Ryan Fitzgibbons
NASA dicit:
“A NASA F/A-18 performs the quiet supersonic dive maneuver of NASA’s Armstrong Flight Research Center in California. The dive include climbing to 50,000 feet, followed by a supersonic, inverted dive. This creates shock waves in such a way that they are quieter in a specific area. The dive has been used in support of NASA’s Commercial Supersonic Technology project, to study perception feedback provided by members of the public.”
Video Credit: NASA Goddard/Jefferson Beck
NASA dicit:
“Just 114 miles from the newly-found Hiawatha impact crater under the ice of northwest Greenland, lies a possible second impact crater. The 22-mile wide feature would be the second crater found under an ice sheet, and if confirmed, would be the 22nd-largest crater on Earth. A NASA-led team discovered the feature using satellite data of the surface of the Greenland Ice Sheet as well as radar measurements from the airborne campaign Operation IceBridge. Although the two massive craters lie fairly close to each other, it’s thought they weren’t created at the same time. The second crater looks to be much older than Hiawatha, with features that are significantly more eroded, and it contains older ice than its neighbor.”
Video Credit: NASA Goddard/Jefferson Beck
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