Results 1 to 10 of about 81,417 (263)

Aurora Detection From Nighttime Lights for Earth and Space Science Applications

open access: yesEarth 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

open access: yesEarth 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

Orbiting and In-Situ Lidars for Earth and Planetary Applications

open access: yesIEEE 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

Using the OMI aerosol index and absorption aerosol optical depth to evaluate the NASA MERRA Aerosol Reanalysis [PDF]

open access: yesAtmospheric 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

Small PN-Code Lidar for Asteroid and Comet Missions—Receiver Processing and Performance Simulations

open access: yesRemote 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

The Global Precipitation Measurement (GPM) Spacecraft Power System Design and Orbital Performance

open access: yesE3S 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

Anomalous trends in global ocean carbon concentrations following the 2022 eruptions of Hunga Tonga-Hunga Ha’apai

open access: yesCommunications Earth & Environment
We 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

Russian forests show strong potential for young forest growth

open access: yesCommunications Earth & Environment
Climate 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
doaj   +1 more source

A Portable, Compact, and Fault-Tolerant Processor for Spaceflight Applications

open access: yesAerospace
This paper presents the Goddard RISC-V (GRV) a compact, portable, and highly customizable fault-tolerant 32-bit RISC-V processor, specifically designed for embedded space applications. The design integrates advanced fault-tolerance mechanisms to mitigate
David Guzman-Garcia   +7 more
doaj   +1 more source

Storm surge and ponding explain mangrove dieback in southwest Florida following Hurricane Irma

open access: yesNature Communications, 2021
Mangroves are adapted to cope with tropical storms, but might be threatened by rising frequency and intensity of these events. Here the authors document one of the largest mangrove diebacks on record following Hurricane Irma in Florida, and show a ...
David Lagomasino   +9 more
doaj   +1 more source

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