Sentences with phrase «in precipitation measurements»

Moreover, because of the effects of wind speed, evaporation, and precipitation intensity, different types of rain gauge, and observation techniques induce different errors in precipitation measurements.

Not exact matches

At the same time as the aircraft were taking measurements, Creamean and her colleagues also took samples of the precipitation on the ground and analyzed them to see whether that dust was in the rain or snow landing in the mountains.

«So we were making these measurements while people were on the ground collecting the precipitation and getting radar data,» and together, they were able to paint a better picture of how what happened in the cloud influenced the rain or snow falling on the ground.

The environmental data sets from the Tropical Rainfall Measuring Mission and the MODIS sensors will continue into the next decade with data provided by their follow - on missions: the Global Precipitation Measurement mission to launch in early 2014, and the Visible Infrared Imaging Radiometer Suite on the Suomi National Polar - orbiting Partnership satellite currently in orbit.

«Precipitation depends on ice; it's very sensitive to ice in a cloud, so figuring out what forms ice [in clouds] is sort of the holy grail of the measurements we've been trying to do, and it's a very chemically selective process,» Prather said at the ACS meeting yesterday afternoon.

In regions like West Africa, the measurement method might contribute to obtaining more precipitation information to improve the prognosis models urgently required for water resources management.

Using U.S. Weather Service data on precipitation, radiosonde measurements of CAPE and lightning - strike counts from the National Lightning Detection Network at the University of Albany, State University of New York (UAlbany), they concluded that 77 percent of the variations in lightning strikes could be predicted from knowing just these two parameters.

The predictions matched actual rainfall measurements during the 75 - year period, both in the magnitude (amount) and the trend (increase or decrease) of precipitation.

«The proxy records used in this study appear to contradict other studies that have used direct observations of precipitation from rain gauges... All else being equal, I would trust direct rainfall measurements over proxy records.»

The ARM data will provide more detailed measurements of both aerosols and clouds to assist the research team in quantifying the impacts of aerosols on precipitation under a variety of atmospheric and pollution conditions.

A new paper explores model cloud and precipitation transitions in a highly variable meteorological environment observed during the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Midlatitude Continental Convective Clouds Experiment (MC3E) field campaign.

While it might indicate warming, or lack of precipitation, it does not measure incorrect temperature measurements in the USA.

This apparent inconsistency says little about the overall trend in the heaviest precipitation events, but a lot about the weaknesses of single - point measurements for detecting trends in extreme precipitation.

They include soaring temperatures, declining late - season snowpack, northward - shifted winter storm tracks, increasing precipitation intensity, the worst drought since measurements began, steep declines in Colorado River reservoir storage, widespread vegetation mortality, and sharp increases in the frequency of large wildfires.

Satellite precipitation estimates also fill in voids where ground measurements are lacking, for example, in mountainous regions.

However, these measurements contain non-negligible random errors and biases owing to the indirect nature of the relationship between the observations and actual precipitation, inadequate sampling, and deficiencies in the algorithms.

The Palmer Drought Severity Index, which is a measure of soil moisture using precipitation measurements and rough estimates of changes in evaporation, has shown that from 1900 to 2002, the Sahel region of Africa has been experiencing harsher drought conditions.

Precipitation and streamflow measurements indicate that the event was a 1 in 50 year to 1 in 100 year event in many locations in south - east British Columbia, and numerous streamflow records were broken.

[1] Measurements from several different satellite instruments are used to estimate effects of energetic particle precipitation (EPP) on NOx (NO + NO2) in the Southern Hemisphere stratosphere from 1992 to 2005.

To evaluate the reliability of radio occultation measurements and to study precipitation processes in more detail, coordinated EISCAT measurements would be useful.

I assume that if these measurements show no direct correlation between wind speed and precipitation that this would essentially falsify the hypothesis that this mechanism plays a major role in driving winds.

Uses a time series of hydrographic and stable oxygen isotope (δ18O) measurements collected at a near - coastal site in Marguerite Bay to quantify the prevalence of meteoric freshwater (glacial melt plus precipitation) separately from sea ice melt

[4] Thanks to a strong El Niño that brought near average precipitation to the northern California, the statewide April 1 snowpack measurement in 2016 showed state water resources at 87 percent of the long - term average; however, the snowpack was not sufficient to undo water deficits caused by years of drought.

Using U.S. Weather Service data on precipitation, radiosonde measurements of CAPE and lightning - strike counts from the National Lightning Detection Network at the University of Albany, State University of New York (UAlbany), they concluded that 77 percent of the variations in lightning strikes could be predicted from knowing just these two parameters.

Data on past precipitation patterns around the globe could help modellers to solve some of these issues, but such measurements are scant in many areas.

However, volunteer temperature observers were also asked to take precipitation measurements from rain gauges, and starting around 1960 the U.S. Weather Service requested that observers start taking their measurements in the morning (between 7 and 9 AM), as that would minimize the amount of evaporation from rain gauges and result in more accurate precipitation measurements.

The AMF2 was deployed on a research vessel offshore and provided critical measurements to quantify the moisture budget and cloud and precipitation processes associated with ARs and to characterize aerosols and aerosol - cloud - precipitation interactions associated with aerosols from long - range transport in the Pacific Ocean.

While there are few ground - based weather stations in the North Pacific to tally how much rain fell over the ocean, satellites such as those participating in the Global Precipitation Measurement (GPM) mission can estimate precipitation ratePrecipitation Measurement (GPM) mission can estimate precipitation rateprecipitation rates from above.

Quantitative precipitation measurement is supported by two precipitation radars in key locations of the catchment.

Precipitation: Advances in measurement, estimation, and prediction.

Some participants expressed concern that a capability for passive microwave precipitation measurements may not emerge in the revised MIS sensor, and they suggested that NPOESS place emphasis on the water cycle (water vapor, liquid water, ice water, and precipitation) when considering MIS requirements, possibly including giant magneto - impedance (GMI) bands.

Zhanqing Li, lead author of a paper published in Nature Geoscience and University of Maryland atmospheric scientist, says, «Using a 10 - year dataset of atmospheric measurements, we have uncovered the long - term, net impact of aerosols on cloud height and thickness and the resulting changes in precipitation frequency and intensity.»