Results 81 to 90 of about 103,038 (326)

Environmental Impact Assessment of an Innovative Sustainable Thermoplastic Anticorrosion Coating for Aluminum Alloy AA2024

Polymer Engineering &Science, EarlyView.
Life cycle assessment reveals that recyclable PPM coatings significantly reduce environmental impacts compared to epoxy, promoting sustainable aerospace corrosion protection. ABSTRACT This study evaluates the environmental performance of an innovative thermoplastic anticorrosion coating based on poly(phenylene methylene) (PPM) for aluminum alloy AA2024,
Marco Francesco D'Elia, Maider Iturrondobeitia, Erlantz Lizundia, Walter Caseri, Markus Niederberger   +4 more
wiley   +1 more source

Tropical and stratospheric influences on winter atmospheric circulation patterns in the North Atlantic sector

Environmental Research Letters, 2021
Seasonal forecast systems have demonstrated significant skill in forecasting the winter North Atlantic Oscillation (NAO) in recent years. This skill is a result of influences that have remote origins, such as the El Niño-Southern Oscillation or the ...
Anna Maidens, Jeff R Knight, Adam A Scaife   +2 more
doaj   +1 more source

The photochemistry of carbon monoxide in the stratosphere and mesosphere evaluated from observations by the Microwave Limb Sounder on the Aura satellite [PDF]

, 2010
The photochemical production and loss rates for carbon monoxide (CO) in the stratosphere and mesosphere are evaluated using measurements from the Aura Microwave Limb Sounder (MLS) and the Atmospheric Chemistry Experiment-Fourier Transform Spectrometer ...
A. Lambert, Abbas, Allen, Allen, Allen, Allen, Barnes, Bernath, Boone, Brasseur, Brueckner, C. D. Boone, Canty, Canty, Clancy, de Zafra, Forkman, Froidevaux, Froidevaux, G. L. Manney, Grossman, H. C. Pumphrey, H. M. Pickett, Hays, Huang, Inn, Jin, Jucks, K. A. Walker, K. Minschwaner, Kumer, L. Froidevaux, Lambert, Li, M. J. Schwartz, Minschwaner, N. J. Livesey, Nassar, P. F. Bernath, Parkinson, Pickett, Pickett, Pumphrey, Pumphrey, Rinsland, Rusch, Russell, Ruth, Sachse, Sander, Schneider, Schoeberl, Schwartz, Solomon, Wofsy, Yoshino   +55 more
core   +2 more sources

Windows of opportunity in subseasonal weather regime forecasting: A statistical–dynamical approach

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study explores how the atmospheric state at initialisation creates windows of opportunity for improving week 3 forecasts of weather regime activity. Greenland blocking activity increases following Madden–Julian Oscillation phases 7, 8, and 1 and weak stratospheric polar vortex states, revealing patterns exploitable by statistical models.
Fabian Mockert, Christian M. Grams, Sebastian Lerch, Julian Quinting   +3 more
wiley   +1 more source

Subseasonal predictability of the North Atlantic Oscillation

Environmental Research Letters, 2021
Skillfully predicting the North Atlantic Oscillation (NAO), and the closely related northern annular mode (NAM), on ‘subseasonal’ (weeks to less than a season) timescales is a high priority for operational forecasting centers, because of the NAO’s ...
John R Albers, Matthew Newman
doaj   +1 more source

Auger spectroscopy of stratospheric particles : the influence of aerosols on interplanetary dust [PDF]

, 1985
Particle collections from the stratosphere via either the JSC Curatorial Program or the U2 Program (NASA Ames) occur between 16km and 19km altitude and are usually part of ongoing experiments to measure parameters related to the aerosol layer.
Mackinnon, Ian D.R., Mogk, David W., Rietmeijer, Frans J.M.   +2 more
core   +1 more source

Planning, implementation, and first results of the Tropical Composition, Cloud and Climate Coupling Experiment (TC4) [PDF]

, 2010
The Tropical Composition, Cloud and Climate Coupling Experiment (TC4), was based in Costa Rica and Panama during July and August 2007. The NASA ER-2, DC-8, and WB-57F aircraft flew 26 science flights during TC4.
Colarco, Peter R., Craig, Michael S., Jensen, Eric J., Jucks, Kenneth W., Kawa, Stephan R., Kurylo, Michael J., Mace, Gerald G., Maring, Hal, Minnis, Patrick, Newman, Paul A., Pfister, Lenny, Pickering, Kenneth E., Platnick, Steven, Rosenlof, Karen H., Schoeberl, Mark R., Selkirk, Henry B., Starr, David O., Toon, Owen B., Vasques, Marilyn F., Wennberg, Paul O., Wofsy, Steven C.   +20 more
core   +1 more source

Impact of small‐scale gravity waves on tracer transport

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We extend a gravity wave (GW) parametrization to calculate the tracer transport due to the GW–Stokes drift and next‐order effects, where the approach is validated by comparing coarse‐resolution simulations with parametrized GWs to high‐resolution, wave‐resolving reference simulations.
Irmgard Knop, Stamen Dolaptchiev, Ulrich Achatz   +2 more
wiley   +1 more source

Chlorine peroxide reaction explains observed wintertime hydrogen chloride in the Antarctic vortex

Communications Earth & Environment
It is well established that the drastic ozone loss in the Antarctic stratosphere, commonly known as the ozone hole, is primarily driven by gas-phase and heterogeneous chemical processes. While chemistry transport models generally reproduce observed ozone
Jens-Uwe Grooß, Rolf Müller, John N. Crowley, Michaela I. Hegglin   +3 more
doaj   +1 more source

A dynamics-based separation of deep and shallow stratospheric circulation branches [PDF]

Atmospheric Chemistry and Physics
The wave-driven Brewer–Dobson circulation plays a crucial role in determining the transport of trace gases and aerosols in the stratosphere. We examine the structure of the circulation based on reanalysis data (ERA5, ERA-Interim, MERRA2, and JRA55) and ...
R. Baikhadzhaev, F. Ploeger, F. Ploeger, P. Preusse, M. Ern, T. Birner, T. Birner   +6 more
doaj   +1 more source