Sentences with phrase «radar observations»
"Radar observations" refers to the use of specialized technology called radar to gather information or data about objects or phenomena in the surrounding environment. It involves emitting radio waves and detecting their reflections or echoes, which helps us measure distances, speeds, locations, and other characteristics of the observed objects. Full definition
The team is already using a preliminary shape model, produced from radar observations of the asteroid.
sciencedaily.com
Here, satellite radar observations are used to produce a composite picture of the life cycle of convection in these two regions.
Smith, S.A., and A.D. Del Genio, 2001: Analysis of aircraft, radiosonde, and radar observations in cirrus clouds observed during FIRE II: The interactions between environmental structure, turbulence, and cloud microphysical properties.
Homeyer's research is the first concept of its kind to take ground - based radar observations of storms and link them to satellite observations of trace gases to better understand the characteristics of storms and how they modify the atmospheric composition.
The sea bottoms showed up in radar observations from NASA's Cassini spacecraft, which arrived at Saturn in 2004.
The team used radar observations captured by the European Earth Remote Sensing (ERS - 1 and -2) satellites to measure just how far the grounding line - the point where the glacier meets the land - had retreated.
Recently, truck - borne Doppler radar observations of tornadoes (readers who watch tornado TV shows would be familiar with such devices) have identified a number of cases in which the radar - measured winds are considerably faster than the official NWS rating implies.
Radar observations by the U.S. Air Force and by amateur hobbyists revealed that after each commercial satellite was deployed, an additional small object flew far away from the jettisoned rocket booster, only to later turn around and fly back.
However radar observations have shown that lakes cover only a few per cent of the surface and are concentrated near the poles, making Titan much drier than Earth.
Ground visual and radar observations indicate that the craft has split into at least two pieces and is likely spinning.
After receiving such an email, Chodas contacts the scientists coordinating radar observations at NASA's Deep Space Network station at Goldstone, Calif., and the Arecibo Observatory in Puerto Rico, to check on their availability.
But previous radar observations viewed the apparent lakes at an angle, and therefore did not see bright radar glints reflected back from their surface, leaving open the possibility that the features were dry lake beds or patches of soot.
The find, based on new radar observations, adds to a deluge of evidence that the moon's lakes are indeed filled with liquid, rather than dried mud.
In 1965, however, radar observations showed conclusively that the planet's rotational period was about 59 days.
Astronomers studied Toutatis, Geographos and Castalia using Earth - based radar observations during close approaches to the Earth.
Baggaley, W. J. Advanced meteor orbit radar observations of interstellar meteoroids.
Ellen Howell (National Astronomy and Ionospheric Centre, NAIC, Arecibo Observatory) and Mikko Kaasalainen (Helsinki University) were provided with photometric data to support radar observations and asteroid shape modeling respectively.
The effort uses innovative ARM radar observations from the MC3E field campaign to evaluate a series of high - resolution simulations, which results in an improved understanding of cloud transitions and how to diagnose these transitions in models.
In 1965, Pettengill and Dyce determined Mercury's period of rotation to be 59 + - 5 days based upon radar observations.
«Shallow Precipitation Detection and Classification Using Multifrequency Radar Observations and Model Simulations.»
His research focuses on understanding the interactions of ice, ocean and climate, in particular using imaging radar observations from satellites and airplanes to determine how the ice sheets in Antarctica, Greenland and Patagonia will respond to climate change and affect global sea level.
«BAECC was the first experiment where multifrequency cloud and precipitation radar observations were combined with comprehensive surface observations of falling snow microphysics,» says Moisseev.
Nonetheless, its close approach to Earth is an opportunity to test the ability of a growing global observing network to communicate and coordinate its optical and radar observations in a real scenario.
Recently, truck - borne Doppler radar observations of tornadoes identified a number of cases in which the radar - measured winds are considerably faster than the official NWS rating implies.
They expected to find a decline in ice thickness when they embarked on a study of radar observations of 402 lakes near Barrow in Alaska from the European earth resources satellites ERS - 1 and ERS - 2.
• Radar observations by the giant Arecibo telescope in Puerto Rico allow NEA trajectories — and impact probabilities — to be determined most precisely, but uncertain funding threatens this capability.
The orbit is also moving MESSENGER very close over the planet's north pole, where it will try to detect ice in craters shaded from the Sun which has been suggested by ground - based radar observations.
Twenty years ago, radar observations from Earth revealed small, highly reflective areas close to Mercury's poles, suggesting the presence of ice.
Later in 1971, Goldstein refined the rotation period to be 58.65 + - 0.25 days using radar observations.
[N. B. Karlsson, L. S. Schmidt and C. S. Hvidbert, Volume of Martian mid-latitude glaciers from radar observations and ice - flow modeling] The researchers paired a decade's worth of radar measurements with models of how glacial ice flows on Earth to calculate the approximate thickness and size of all the Martian glaciers.
Radar observations have revealed craggy, rocky shorelines that resemble the coast of Maine.
Instruments are now so precise that radar observations can spot a single bee at about 30 miles away, and scientists can combine thermal imaging cameras, acoustic monitoring devices and small portable radars with weather radar data to get a complete picture of a region's ecology.
Radar observations of glaciers along West Antarctica's Amundsen Sea suggest a runaway meltdown
In radar observations a few weeks apart it found evidence that methane showers had soaked the soil, then evaporated — the first proof of precipitation beyond Earth.
However, radar observations in 1965 showed that the planet has a 3:2 spin - orbit resonance, rotating three times for every two revolutions around the Sun.
«Radar observations of a relict ice stream margin traversing Siple Dome, Antarctica,»» Antarctic Journal of the United States, XXX (5), (in press).
There is also some unconfirmed evidence of recent volcanism on Mercury, and radar observations of Mercury's north pole show evidence of water ice in the protected shadows of some craters.
Radar observations are unusual in astronomy because they aren't just about picking up signals from the universe around us.
Radar observations of Venus were first carried out in the 1960s, and provided the first measurements of the rotation period which were close to the modern value.
This is the first time two different types of radar observations have been combined for this type of analysis.
Radar observations in the 1970s revealed details of Venus» surface for the first time.
Simulations with high - and low - density dendrites and aggregates also bracketed the radar observations (Fig. 3), indicating that a mixture of dendrite types could explain the radar observations.
Convective and mesoscale processes, intensity change, rainfall, airborne Doppler radar observations, dropsondes, numerical modeling
Souverijns N., A. Gossart, S. Lhermitte, I. V. Gorodetskaya, S. Kneifel, M. Maahn, F. L. Bliven and N. P. M. Van Lipzig (November 2017): Estimating radar reflectivity - Snowfall rate relationships and their uncertainties over Antarctica by combining disdrometer and radar observations.