Results 21 to 30 of about 5,837,687 (407)

Interconnected hydrologic extreme drivers and impacts depicted by remote sensing data assimilation

open access: yesScientific Reports, 2023
Hydrologic extremes often involve a complex interplay of several processes. For example, flood events can have a cascade of impacts, such as saturated soils and suppressed vegetation growth.
Timothy M. Lahmers   +7 more
doaj   +1 more source

Implications of carbon monoxide bias for methane lifetime and atmospheric composition in chemistry climate models [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
A low bias in carbon monoxide (CO) at northern high and mid-latitudes is a common feature of chemistry climate models (CCMs) that may indicate or contribute to a high bias in simulated OH and corresponding low bias in methane lifetime. We use simulations
S. A. Strode   +5 more
doaj   +1 more source

The Mid-infrared Instrument for JWST and Its In-flight Performance

open access: yesPublications of the Astronomical Society of the Pacific, 2023
The Mid-Infrared Instrument (MIRI) extends the reach of the James Webb Space Telescope (JWST) to 28.5 μm. It provides subarcsecond-resolution imaging, high sensitivity coronagraphy, and spectroscopy at resolutions of λ/Δλ ∼ 100–3500, with the high ...
G. Wright   +101 more
semanticscholar   +1 more source

Multi-decadal aerosol variations from 1980 to 2009: a perspective from observations and a global model [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
Aerosol variations and trends over different land and ocean regions from 1980 to 2009 are analyzed with the Goddard Chemistry Aerosol Radiation and Transport (GOCART) model and observations from multiple satellite sensors and available ground-based ...
M. Chin   +24 more
doaj   +1 more source

Melatonin is a potential drug for the prevention of bone loss during space flight

open access: yesJournal of Pineal Research, 2019
Astronauts experience osteoporosis‐like loss of bone mass because of microgravity conditions during space flight. To prevent bone loss, they need a riskless and antiresorptive drug. Melatonin is reported to suppress osteoclast function.
M. Ikegame   +52 more
semanticscholar   +1 more source

Adaptive Antenna Pattern Notching of Interference in Synthetic Aperture Radar Data Using Digital Beamforming

open access: yesRemote Sensing, 2019
Radio Frequency Interference (RFI) is a growing problem in Synthetic Aperture Radar (SAR) systems as scientific motivations push the radars to lower frequencies and as more wireless services share the frequency spectrum.
Tobias Bollian   +4 more
doaj   +1 more source

Revisiting the Role of Exercise Countermeasure on the Regulation of Energy Balance During Space Flight

open access: yesFrontiers in Physiology, 2019
A body mass loss has been consistently observed in astronauts. This loss is of medical concern since energy deficit can exacerbate some of the deleterious physiological changes observed during space flight including cardiovascular deconditioning, bone ...
C. Laurens   +5 more
semanticscholar   +1 more source

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

Examples of fast solar wind transients, their sources and the forecast of possible geomagnetic impact

open access: yesGeofísica Internacional, 2000
Presentamos ejemplos de la observación interplanetaria de expulsiones de materia solar, incluyendo posibles nubes magnéticas, que generaron choques magnetosónicos de alta velocidad en el medio interplanetario.
D. Berdichevsky   +10 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

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