Sentences with phrase «aircraft measurements»

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.

So, a sea ice estimate for a region constructed from shipping reports in the 1920s might not be directly comparable to an estimate for the same region from the 1940s made from aircraft measurements.

The study used aircraft measurements where they circled upwind and downwind of potential sources, but they only sampled during two days.

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.

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).

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.

Then they tested the model results using the comprehensive ground and aircraft measurements gathered during the 2006 Megacity Initiative: Local and Global Research Observations in Mexico City.

Aircraft measurements confirm that methane emissions from northern European wetlands exhibit a uniform regional carbon isotopic signature, despite considerable ground - level heterogeneity.

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

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

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).

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.

The sheer variety of aerosol particle types and the fact that they stay in the atmosphere for just days to weeks, compared to years spent by greenhouse gases, means they are among the most challenging to understand and incorporate into climate models, said Redemann, which is why the data collected from the P - 3 aircraft measurements of aerosols and clouds are so important.

For instance, in Siberia, measurements up until the late 1930s were mostly from shipping lane reports, while after the late 1930s they mostly came from aircraft measurements.

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.

These aircraft measurements were done at the time Charles Keeling was beginning continuous carbon dioxide measurements at Mauna Loa, Hawaii.

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 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.

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.

The authors conclude that aircraft measurements can be used to quickly characterize the isotopic signature of methane emissions on a regional scale and that these broad signatures can then be incorporated into regional and global models to discriminate the sources of methane emissions.

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.