Results 21 to 30 of about 81,982 (264)
Aurora Detection From Nighttime Lights for Earth and Space Science Applications
Earth and Space Science, 2023 This research leverages data from the Day/Night Band (DNB) of the Visible Infrared Imaging Radiometer (VIIRS) instrument onboard the Suomi National Polar‐orbiting Partnership (S‐NPP) satellite.
Virginia Kalb +3 more
doaj +1 more source
ICESat‐2 Precision Orbit Determination
Earth and Space Science, 2021 The ICESat‐2 Precision Orbit Determination (POD) system computes the precise position of the laser altimeter instrument in inertial space, a measurement necessary for accurate geolocation of individual photon surface returns.
T. C. Thomas +4 more
doaj +1 more source
The Global Precipitation Measurement (GPM) Spacecraft Power System Design and Orbital Performance
E3S Web of Conferences, 2017 The Global Precipitation Measurement (GPM) spacecraft was jointly developed by National Aeronautics and Space Administration (NASA) and Japan Aerospace Exploration Agency (JAXA). It is a Low Earth Orbit (LEO) spacecraft launched on February 27, 2014. The
Dakermanji George +6 more
doaj +1 more source
Using the OMI aerosol index and absorption aerosol optical depth to evaluate the NASA MERRA Aerosol Reanalysis [PDF]
Atmospheric Chemistry and Physics, 2015 A radiative transfer interface has been developed to simulate the UV aerosol index (AI) from the NASA Goddard Earth Observing System version 5 (GEOS-5) aerosol assimilated fields.
V. Buchard +8 more
doaj +1 more source
Orbiting and
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 At NASA Goddard Space Flight Center, we have been developing spaceborne lidar instruments for space sciences. We have successfully flown several missions in the past based on mature diode pumped solid-state laser transmitters.
Anthony W. Yu +21 more
doaj +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Russian forests show strong potential for young forest growth
Communications Earth & EnvironmentClimate warming has improved conditions for boreal forest growth, yet the region’s fate as a carbon sink of aboveground biomass remains uncertain. Forest height is a powerful predictor of aboveground forest biomass, and access to spatially detailed ...
Christopher S. R. Neigh +8 more
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Small PN-Code Lidar for Asteroid and Comet Missions—Receiver Processing and Performance Simulations
Remote Sensing, 2021 Space missions to study small solar system bodies, such as asteroids and comet cores, are enhanced by lidar that can provide global mapping and serve as navigation sensors for landing and surface sampling.
Daniel R. Cremons +3 more
doaj +1 more source
FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley +1 more source
Communications Earth & EnvironmentWe report on observed trend anomalies in climate-relevant global ocean biogeochemical properties, as derived from satellite ocean color measurements, that show a substantial decline in phytoplankton carbon concentrations following eruptions of the ...
Bryan A. Franz +3 more
doaj +1 more source