Results 61 to 70 of about 64,429 (281)

Intercomparison of aerosol optical depths from four reanalyses and their multi-reanalysis consensus [PDF]

Atmospheric Chemistry and Physics
The emergence of aerosol reanalyses in recent years has facilitated a comprehensive and systematic evaluation of aerosol optical depth (AOD) trends and attribution over multi-decadal timescales.
P. Xian, J. S. Reid, M. Ades, A. Benedetti, P. R. Colarco, A. da Silva, T. F. Eck, T. F. Eck, J. Flemming, E. J. Hyer, Z. Kipling, S. Rémy, T. T. Sekiyama, T. Tanaka, K. Yumimoto, J. Zhang   +15 more
doaj   +1 more source

Prediction of dynamic pairwise wake vortex separations for approach and landing [PDF]

, 2012
Design and performance of the Wake Vortex Prediction and Monitoring System WSVBS are described. The WSVBS has been developed to tactically increase airport capacity for approach and landing on single runways as well as closely-spaced parallel runways. It
Dengler, Klaus, Gerz, Thomas, Holzäpfel, Frank, Schwarz, Carsten   +3 more
core  

Chemical signatures of aged Pacific marine air: Mixed layer and free troposphere as measured during PEM-West A [PDF]

, 1996
The Pacific Ocean is one of the few remaining regions of the northern hemisphere that is relatively free of direct anthropogenic emissions. However, long-range transport of air pollutants is beginning to have a significant impact on the atmosphere over ...
Bachmeier, AS, Bandy, AR, Blake, DR, Bradshaw, JD, Gregory, GL, Heikes, BG, Kondo, Y, Thornton, DC   +7 more
core   +1 more source

Evaluating anisotropy‐based Monin–Obukhov similarity theory over canopies and complex terrain

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study shows that an anisotropy‐based generalization of Monin–Obukhov surface‐layer scaling (SC23) applies readily across a wide range of atmospheric conditions with variable terrain, canopies, and land‐cover complexity. This work focuses on the scaling of velocity variances for 7 years at the 47 sites in the National Ecological Observation Network
Tyler S. Waterman, Ivana Stiperski, Nathaniel Chaney, Marc Calaf   +3 more
wiley   +1 more source

Meander‐Bend Erosion Dynamics Along a Gravel‐Bed River: Insights From Short‐Term UAV Monitoring

River Research and Applications, EarlyView.
ABSTRACT Riverbank erosion is a natural process in meandering rivers that contributes to sediment supply and geomorphic diversity, yet it can threaten infrastructure and human activities within the floodplain. Recently, many studies have used high‐resolution remote sensing technologies to measure bank erosion, but they often focus on technical aspects ...
Katarina Pavlek, Mateo Gašparović, Tomáš Galia   +2 more
wiley   +1 more source

A 3.5-Dimensional Variational Method for Doppler Radar Data Assimilation and Its Application to Phased-Array Radar Observations

Advances in Meteorology, 2010
A 3.5-dimensional variational method is developed for Doppler radar data assimilation. In this method, incremental analyses are performed in three steps to update the model state upon the background state provided by the model prediction.
Qin Xu, Li Wei, Wei Gu, Jiandong Gong, Qingyun Zhao   +4 more
doaj   +1 more source

Aviation weather service requirements, 1980 - 1990 [PDF]

, 1977
Future aviation weather needs are discussed. Priority weather requirements and deficiencies existing for weather observations and forecast services in terminal areas are presented.
Lieurance, N. A.
core   +1 more source

WRF-Chem model predictions of the regional impacts of N2O5 heterogeneous processes on night-time chemistry over north-western Europe [PDF]

, 2014
. Chemical modelling studies have been conducted over north-western Europe in summer conditions, showing that night-time dinitrogen pentoxide (N2O5) heterogeneous reactive uptake is important regionally in modulating particulate nitrate and has a~modest ...
Allan, J., Archer-Nicholls, S., Aruffo, E., Coe, H., Di Carlo, P., Jones, R., Le Breton, M., Lowe, D., McFiggans, G., Morgan, W., Ouyang, B., Percival, C., Utembe, S., Zaveri, R. A.   +13 more
core   +4 more sources

Programmed unmanned aerial vehicles show great potential for monitoring marine megafauna in specific areas of interest

Remote Sensing in Ecology and Conservation, EarlyView.
Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann, Valdemar Palmqvist, Johanna Stedt   +2 more
wiley   +1 more source

Analysis of Cloud Top Parameters on the Qinghai-Xizang (Tibet) Plateau and Their Application in Airship Research

Gaoyuan qixiang
Stratospheric airships, due to their excellent performance, exhibit great potential in flight missions within the aerospace field.However, the complexity of the stratospheric environment presents significant challenges to flight safety.Therefore ...
YANG Molan, XU Wenkuan, BI Yitong, LÜ Weihao, YANG Yanchu, MIAO Jinggang   +5 more
doaj   +1 more source