Results 31 to 40 of about 64,429 (281)

Evaluating the Significance of the Contrail Effect on Diurnal Temperature Range Using the Eyjafjallajökull Eruption‐Related Flight Disruption

open access: yesGeophysical Research Letters, 2018
Meteorological data collected during the post‐9/11 flight grounding in the United States suggested that the removal of contrails increased diurnal temperature range (DTR), but subsequent research has contested this result.
Ajvir S. Sandhu, James U. L. Baldini
doaj   +1 more source

Influence assessment of physical and geographical conditions for flat terrain on flight visibility [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
Introduction. A flight visibility model is presented that takes into account the nature of the underlying surface, the height of the flat terrain, and the dynamics of the aircraft flight due to changes in altitude and ground speed during aerial work ...
Stepanov, Alexey V.
doaj   +1 more source

Foehn warming distributions in nonlinear and linear flow regimes: a focus on the Antarctic Peninsula [PDF]

open access: yes, 2014
The structure of lee-side warming during foehn events is investigated as a function of cross-barrier flow regime linearity. Two contrasting cases of westerly flow over the Antarctic Peninsula (AP) are considered – one highly nonlinear, the other ...
Elvidge, Andrew   +4 more
core   +1 more source

OpenAP.top: Open Flight Trajectory Optimization for Air Transport and Sustainability Research

open access: yesAerospace, 2022
Trajectory optimization has been an active area of research for air transport studies for several decades. But almost all flight optimizers proposed in the literature remain close-sourced, which presents a major disadvantage for the advancement of ...
Junzi Sun
doaj   +1 more source

A new method to correct the electrochemical concentration cell (ECC) ozonesonde time response and its implications for “background current” and pump efficiency [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
The electrochemical concentration cell (ECC) ozonesonde has been the main instrument for in situ profiling of ozone worldwide; yet, some details of its operation, which contribute to the ozone uncertainty budget, are not well understood.
H. Vömel   +13 more
doaj   +1 more source

The new sun-sky-lunar Cimel CE318-T multiband photometer – a comprehensive performance evaluation [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
This paper presents the new photometer CE318-T, able to perform daytime and night-time photometric measurements using the sun and the moon as light source.
Á. Barreto   +14 more
doaj   +1 more source

A review and framework for the evaluation of pixel-level uncertainty estimates in satellite aerosol remote sensing [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
Recent years have seen the increasing inclusion of per-retrieval prognostic (predictive) uncertainty estimates within satellite aerosol optical depth (AOD) data sets, providing users with quantitative tools to assist in the optimal use of these data ...
A. M. Sayer   +12 more
doaj   +1 more source

Chemical transport model ozone simulations for spring 2001 over the western Pacific:comparisons with TRACE-P lidar, ozonesondes, and Total Ozone Mapping Spectrometer columns [PDF]

open access: yes, 2003
Two closely related chemical transport models (CTMs) employing the same high-resolution meteorological data (similar to180 km x similar to180 km x similar to600 m) from the European Centre for Medium-Range Weather Forecasts are used to simulate the ozone
Akimoto, H   +6 more
core   +2 more sources

Warming summers limit reindeer grazing, weakening herbivory pressure in the mountain tundra

open access: yesEcography, EarlyView.
Climate change is predicted to alter species interactions by exposing ecosystems to increasingly frequent and intense warm spells. In the mountain tundra, grazing by large herbivores, particularly reindeer, can limit shrub expansion and preserve Arctic plant diversity.
Marianne Stoessel   +2 more
wiley   +1 more source

Beyond birds: rethinking bird‐centered pathogen models in light of insect migration

open access: yesEcography, EarlyView.
Migration redistributes biomass, nutrients, and pathogens across ecosystems. For decades, migratory birds have been treated as the default long‐distance pathogen vectors, shaping both conceptual frameworks and empirical models of disease ecology.
Virginia Morandini
wiley   +1 more source

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