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  • Contrails | NASA Earthdata
    Contrails are human-induced clouds that usually form at very high altitudes (usually above 8 km - about 26,000 ft) where the air is extremely cold (less than -40ºC) Because of this, contrails form not when an airplane is taking off or landing, but while it is at cruise altitude (Exceptions occur i
  • Dropping in on a Hurricane | NASA Earthdata
    Based at the Naval Air Station in Jacksonville, Florida, the CAMEX-4 team embarked on a campaign to study hurricane development, tracking, and landfall impacts The researchers hoped to gather valuable hurricane data by venturing into a hurricane at high altitudes, but there was just one problem: a shortage of hurricanes in the Atlantic
  • Air Mass Density | NASA Earthdata
    Air mass density is a fundamental property of atmosphere Mixture of gases forming Earth's atmosphere, consisting of nitrogen (∼78%), oxygen (∼21%), water vapor, and other trace gases such as carbon dioxide, helium, argon, ozone, or various pollutants The concentration of water vapor is very variab
  • Glacier Power: What is a Glacier? | NASA Earthdata
    Are found in high altitudes May flow downwards from cirques, ice caps, highland ice fields, or ice sheets Are shaped like long tongues of ice Bering and Hubbard Glaciers are valley glaciers and are the longest in the Americas (200 and 150 kilometers long) Tidewater Glaciers Are valley glaciers that enter the sea
  • Terrain Elevation | NASA Earthdata
    NASA's terrain elevation data measure current height and changes in land altitude and are useful for creating digital elevation models
  • GNSS | NASA Earthdata
    GNSS is a space geodesy technique that provides autonomous geospatial positioning with global coverage NASA hosts one of six global GNSS data archive centers
  • On the Trail of Contrails | NASA Earthdata
    On top of that, most commercial jets cruise at 26,000 feet or higher, where temperatures are cold enough that the large volumes of condensed vapor instantly freeze and form visible contrail clouds Spangenberg said, “That’s why contrails form at the high altitudes where the jet liners fly
  • 3 12 2018 UARS: A Model Data Set : Feature Articles - Earthdata
    at those altitudes (90-100 km above the Earth's surface) because the UARS satellite has a lot of instruments capable of remotely sensing mesospheric altitudes " This graphic shows the approximate location of the Aurora Borealis in relation to the mesosphere and thermosphere (Image adapted from Robert Simmon, Goddard Space Flight Center)
  • Atmospheric Temperature | NASA Earthdata
    Temperature can vary greatly at different levels of Earth's atmosphere Measuring atmospheric temperatures is essential for many forms of scientific work including weather forecasting and studying climate processes, and for conducting human activities such as flying aircraft, agriculture, and controlling pollution
  • A Long-Term Record of Upper Stratospheric and Mesospheric . . . - Earthdata
    This region is, however, far more sensitive to climate change than is the lower atmosphere: US M temperature trends of ~2-3 K decade have been reported, compared to ~0 2 K decade at lower altitudes We will produce a long-term observational dataset of daily, near-global US M temperature profiles from roughly 25-80 km altitude covering 1991 to





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