Sentences with phrase «aircraft measurements of»

CI numbers have been calibrated against aircraft measurements of tropical cyclones in the Northwest Pacific and Atlantic basins.

The Trump administration has killed NASA's Carbon Monitoring System, which was responsible for compiling data from separate satellite and aircraft measurements of CO2 and methane emission across the Earth.

He has now updated his research using data from previous studies that relied on satellite and aircraft measurements of emissions above oil and gas fields.

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.

The first full day of MAMM flying kicked off at 9 am local time, as the FAAM Atmospheric Research Aircraft (ARA) took to the skies to begin the morning's measurements of wetland emissions.

The flights of the research aircraft were coordinated with the ground - based and satellite measurements.

«Light - based method improves practicality and quality of remote wind measurements: Innovative technology could aid hurricane forecasting, aircraft safety and wind energy generation.»

The newly available data gives researchers a treasure trove of measurements they can use to better understand how space weather works and how best to protect critical infrastructure, such as the nation's satellites, aircraft, communications networks, navigation systems, and electric power grid.

In contrast, the method used by Miller and his colleagues, called a top - down method, uses measurements of methane in the atmosphere, taken from a national network of greenhouse gas monitoring stations and aircraft measurements conducted by the National Oceanic and Atmospheric Administration and the Department of Energy.

Monitoring network lacks funding NOAA scientists whose observations were used in the study said the research showed the importance of the set of towers and aircraft measurements that monitor greenhouse gas emissions.

The only exception was aircraft, since despite being two models that exist (Airbus A320 and A380), we were unable to obtain access to either of them to make the measurements.»

During the past weeks, sea - ice thickness measurements were the main topic of the TIFAX (Thick Ice Feeding Arctic Export) campaign, which involved research aircraft using laser scanners and a towed electromagnetic probe.

Within the framework of DACCIWA, the researchers will first compile current data in an extensive measurement campaign with satellites, aircraft, and ground - based instruments.

«And, we have gained even finer detail in some parts of the crust, such as beneath Australia, where measurements from aircraft have mapped at resolution of 50 km [30 miles].

PNNL researchers use a host of cutting - edge tools — including weather radars, research aircraft, computer models and satellite measurements — to explore these complex interactions.

These data include new aircraft observations from the northern permafrost region (e.g., the NASA Arctic - Boreal Vulnerability Experiment) and measurement of sea - air gas exchange (e.g., the U.S. Geological Survey (USGS) Gas Hydrates Project).

Howarth places heavy weight on the value of an analysis of satellite measurements, saying it provides better data than aircraft measurements over a longer period of time.

And that's what I mean by measurement and sensing; that's a smart aircraft that can tell you where there might be problems and where you have to do maintenance instead of doing what they have to do at the moment, which is pull apart the aircraft in order to be able to determine if it needs maintenance.

The sampling issues arise from the fact that sea ice is highly dynamic with lots of spatial and seasonal variability so that measurements from individual moorings, submarine sonar tracks, and aircraft flights can only construct an incomplete picture of the evolution of the total Arctic sea ice volume.

Aircraft measurements published last year also showed plumes of high methane concentration over the Arctic ocean (Kort et al 2012), especially in the surface boundary layer.

Another approach is to take aircraft, tower, and other measurements, and try and infer the strength and identity of sources from anomalies in gas concentrations sampled from wide area.

Measurements of greenhouse gases taken by aircraft and ground stations like these were used in the new study of methane estimates.

Alaska Arctic Tundra CH4 Flux Study — Impacts of AGW / CC Published 8 - Jan 2018 Estimating regional - scale methane flux and budgets using CARVE aircraft measurements over Alaska Conclusions Analysis of CH4 column enhancements supplemented by simulated atmospheric transport allowed us to estimate the monthly - mean CH4 fluxes from our study domain (50 — 75 N, 130 — 170 W).

In the spring of 2014 we were part of a program that performed some ground - truth measurements to validate aircraft sensors and thus moving up the scale to satellite data.

Validation of the CO2 inversion product (v16r1): mean bias of the atmospheric component of this product with respect to independent aircraft measurements in the free troposphere.

The accuracy of RRTMG is verified through comparison to AER's reference radiation code LBLRTM, which is directly validated with atmospheric measurements provided by high - quality spectral measurements from satellite -, aircraft - and ground - based instruments.

These data include new aircraft observations from the northern permafrost region (e.g., the NASA Arctic - Boreal Vulnerability Experiment) and measurement of sea - air gas exchange (e.g., the U.S. Geological Survey (USGS) Gas Hydrates Project).

This allowed the development and validation of more realistic simulations that replicated the aircraft measurements and thus quantified more reliably the entities that can not be obtained directly by the aircraft measurements to improve understanding and modeling of aerosol - cloud - precipitation interactions.

The links between model biases and the underlying assumptions of the shallow cumulus scheme are further diagnosed with the aid of large - eddy simulations and aircraft measurements, and by suppressing the triggering of the deep convection scheme.

A recent study highlights results obtained from an aircraft ocean survey that targeted a large warm core eddy in the eastern Caribbean Sea, where upper ocean measurements are crucial to understanding the complexities of heat and moisture transfer during the passage of tropical cyclones.

Though ground and aircraft sensors provide the most accurate measurements of carbon monoxide for a localized area, satellites offer the best way to monitor wildfire emissions over broad regions, particularly in remote areas where there are fewer ground - based instruments.

The FAst - physics System TEstbed and Research (FASTER) Project has constructed case studies from the Atmospheric Radiation Measurement Climate Research Facility's Southern Great Plain site during the RACORO aircraft campaign to facilitate research on model representation of boundary - layer clouds.

Salstein looked at wind and pressure measurements from a National Weather Service analysis that makes use of a combination of ground - based, aircraft, and space - based observations.

We compare aircraft observations to modeled CH4 distributions by accounting for a) transport using the Stochastic Time - Inverted Lagrangian Transport (STILT) model driven by Weather Research and Forecasting (WRF) meteorology, b) emissions from inventories such as EDGAR and ones constructed from California - specific state and county databases, each gridded to 0.1 ° x 0.1 ° resolution, and c) spatially and temporally evolving boundary conditions such as GEOS - Chem and a NOAA aircraft profile measurement derived curtain imposed at the edge of the WRF domain.

These include the primary surface temperature thermometer records (NASA GISS, NOAA, and HadCRUT); satellite measurements of the lower troposphere temperature processed by Remote Sensing Systems (RSS) and the University of Alabama - Huntsville (UAH); and 5 major reanalysis datasets which incorporate station data, aircraft data, satellite data, radiosonde data, buoy and ship measurements, and meteorological weather modeling.

Since then, satellite reading of temperatures and the occlusion of numerous infrared bands, ground based, aircraft and balloon measurements of same, and an ever - increasing data base of the optical properties of CO2 (and other gases, like water vapour), have helped refine radiation calculations towards determining the atmospheric heat budget.

The reference network consists of in - situ measurements at observatories and tall towers, and air samples collected at global surface sites and aboard small aircraft.

Dr. Barbara Brooks, University of Leeds, Improving NWP forecasts by the use of remotely controlled aircraft measurements.

The errors for using the above Dvorak technique in comparison to aircraft measurements taken in the Northwest Pacific average 10 mb with a standard deviation of 9 mb (Martin and Gray 1993).

Postdoctoral work at Environment Canada and at the University of Manchester Institute of Science and Technology (UK) gave her opportunities to develop research on cloud - aerosol interactions through in - situ measurements with research aircraft.

A few groups have attempted to construct sea ice estimates for the pre-satellite era using various combinations of land, ship, submarine, buoy and aircraft measurements made over the years, e.g., the Chapman & Walsh dataset or the Zakharov dataset (Note that the server for the Zakharov dataset is not always online, so the link sometimes doesn't work).

«We can pretty much tell what's happening at a global level, but if we want to understand what's happening in different regions, we really need to have a denser measurement network and a combination of different approaches, like aircraft and tall towers,» said Dlugokencky, a co-author of the Science paper.

The aircraft also made in situ measurements of cloud microphysics and ice nuclei, as well as meteorological state parameters and radiative fluxes, which were important study inputs.

Schwietzke S., G. Pétron, S. Conley, C. Pickering,..., C. W. King, A. B. White, L. Bianco and R. C. Schnell (May 2017): Improved Mechanistic Understanding of Natural Gas Methane Emissions from Spatially Resolved Aircraft Measurements.

Measurements with commercial aircraft could provide good data coverage over much of the globe.

What the NYT fails to mention is the fact that the National Academy of Sciences (NAS) report actually recommended regulators use a combination of facility - level (bottom - up), aircraft and tower measurements (top - down) and satellite measurements in order to improve accuracy of methane emission inventories.

To answer this question I looked at more than just the traditional Hadley, NASA and NOAA datasets, but also the measurements of the lower troposphere processed by Remote Sensing Systems (RSS) and the University of Alabama - Huntsville (UAH) as well as the 5 major reanalysis datasets which incorporate station data, aircraft data, satellite data, radiosonde data and meteorological weather modeling.

This allowed the development and validation of more realistic simulations that replicated the aircraft measurements and thus quantify more reliably the entities that can not be obtained directly by the aircraft measurements to improve understanding and modeling of aerosol - cloud - precipitation interactions.

Francis, P.N., P. Hignett, and A. Macke, 1998: The retrieval of cirrus cloud properties from aircraft multi-spectral reflectance measurements during EUCREX» 93.

The study's authors, led by researchers from Harvard University, used atmospheric measurements of methane — a greenhouse gas at least 25 times as powerful at trapping heat as CO2 — from aircraft and stationary towers.