Application of Trajectory Analysis to the Assessment of Local and Long-Range Contributions to Acidic Deposition

1986 ◽  
pp. 885-896
Author(s):  
R. G. de Pena ◽  
G. D. Rolph ◽  
J. F. Takacs ◽  
J. O. Holian
Keyword(s):  
Long Range ◽  
Trajectory Analysis ◽  
Acidic Deposition

Application of trajectory analysis to the assessment of local and long-range contributions to acidic deposition

1986 ◽  
Vol 30 (3-4) ◽  
pp. 885-896
Author(s):  
R. G. de Pena ◽  
G. D. Rolph ◽  
J. F. Takacs ◽  
J. O. Holian
Keyword(s):  
Long Range ◽  
Trajectory Analysis ◽  
Acidic Deposition

Biomass burning pollution products C2H6, C2H2, HCOOH, and PAN in the Southern hemisphere UTLS region observed by the GLORIA instrument during the SouthTRAC HALO aircraft campaign Sep-Nov 2019

2020 ◽  
Author(s):  
Felix Friedl-Vallon ◽  
Jörn Ungermann ◽  
Sören Johansson ◽  
Gerald Wetzel ◽  
Markus Geldenhuys ◽  
...  
Keyword(s):  
Long Range ◽  
Biomass Burning ◽  
Cross Sections ◽  
Trajectory Analysis ◽  
Emission Spectra ◽  
Infrared Region ◽  
Tierra Del Fuego ◽  
Secondary Products ◽  
Research Aircraft ◽  
Two Phases

<p>The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is an imaging Fourier transform spectrometer (iFTS) using a 2-dimensional detector array to record emission spectra in the mid-infrared region with high spatial resolution. GLORIA has been operated on the High Altitude and Long Range Research Aircraft (HALO) during the SouthTRAC campaign in September-November 2019. The campaign with base in Rio Grande (Tierra del Fuego) consisted of two observational periods, mainly in September and November 2019. Apart from many local flights, between the two phases HALO returned to Germany which allowed us to acquire long-range hemispheric cross-sections.</p><p>Two dimensional distributions of pollution species like C<sub>2</sub>H<sub>6</sub>, C<sub>2</sub>H<sub>2</sub>, HCOOH, and PAN, which are produced as primary and secondary products from biomass burning sources have been derived from the GLORIA observations. We will show that during the hemispheric cross sections as well as during some of the local flights, GLORIA observed pollution plumes with extensions of many kilometres in altitude and hundreds of kilometres horizontally with strongly enhanced concentrations of these species.</p><p>Trajectory analysis as well as comparisons to Microwave Limb Sounder (MLS) satellite observations show that the origin of plumes are mainly fires in South America and Africa, but also first signs of the Australian bush fires have been detected in the UTLS as early as November 2019.</p>

scholarly journals Trajectory Analysis of Aeroelastic Long-range Rockets Considering Subsidiary Load Effect

2019 ◽  
Vol 55 (12) ◽  
pp. 196
Author(s):  
WEI Zhao ◽  
LONG Teng ◽  
LI Huaijian ◽  
WANG Zhu ◽  
LIU Li
Keyword(s):  
Long Range ◽  
Trajectory Analysis ◽  
Load Effect

scholarly journals Climatology of Asian dust activation and transport potential based on MISR satellite observations and trajectory analysis

2019 ◽  
Vol 19 (1) ◽  
pp. 363-378 ◽  
Author(s):  
Yan Yu ◽  
Olga V. Kalashnikova ◽  
Michael J. Garay ◽  
Michael Notaro
Keyword(s):  
North America ◽  
Long Range ◽  
Trajectory Analysis ◽  
Asian Dust ◽  
Gobi Desert ◽  
The North ◽  
Relative Contribution ◽  
Dust Sources ◽  
Range Transport ◽  
Transport Potential

Abstract. Asian dust, primarily emitted from the Taklamakan and Gobi deserts, has been reported to reach remote destinations, such as North America. However, the relative contribution of the Taklamakan and Gobi deserts to dust loadings through long-range transport remains unaddressed in any observational study. Here, the climatology of Asian dust activation and potential for transport is investigated using stereo observations of dust sources from the Multi-angle Imaging SpectroRadiometer (MISR) instrument combined with observation-initiated trajectory modeling. MISR-derived dust plume top height and dust plume motion vectors confirm the peak of dust activation and transport potential in spring over the Gobi Desert and in both spring and summer over the Taklamakan Desert. The long-range trajectory patterns of Asian dust, including the influence on North America through trans-Pacific transport, are assessed using extensive forward trajectories initiated by MISR dust plume observations. The trajectory analysis reveals latitude-dependent spread of dust trajectories from the Taklamakan and Gobi deserts, with Taklamakan dust dominantly affecting to the south of 50∘ N and Gobi dust primarily affecting to the north of 50∘ N in North America. The Asian dust activation and transport potential exhibit substantial seasonal and interannual variability, motivating future studies on the potential drivers.

scholarly journals Airmass Trajectories and Long Range Transport of Pollutants: Review of Wet Deposition Scenario in South Asia

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Umesh Kulshrestha ◽  
Bablu Kumar
Keyword(s):  
Middle East ◽  
South Asia ◽  
Long Range ◽  
Wet Deposition ◽  
Trajectory Analysis ◽  
Dust Storms ◽  
Anthropogenic Sources ◽  
Long Range Transport ◽  
Pollution Transport ◽  
Range Transport

This paper presents a review of airmass trajectories and their role in air pollution transport. It describes the concept, history, and basic calculation of air trajectories citing various trajectory models used worldwide. It highlights various areas of trajectory applications and errors associated with trajectory calculations. South Asian region receives airmasses from Europe, Middle East, Africa, and Indian Ocean, and so forth, depending upon the season. These airmasses are responsible for export and import of pollutants depositing in nearby states. Trajectory analysis revealed that soil is contributed by the dust storms coming from Oman through Gulf and Iran, while most of black carbon (BC) sources are located in India. A detailed review of trajectories associated with wet deposition events indicated that airmasses coming from Europe and Middle East carry high concentration of acidic pollutants which are deposited in Himalayan ranges. Similarly, trajectory analysis revealed that acidic pollutants from continental anthropogenic sources are transported to an ecosensitive site in Western Ghats in India and the outward fluxes of anthropogenic activities of Indo-Gangetic region are transported towards Bay of Bengal. Hence, transboundary and long range transport of pollutants are very important issues in South Asia which need immediate attention of scientists and policy makers.

scholarly journals Evaluation of Long-Range Transport Models for Acidic Deposition in East Asia

1998 ◽  
Vol 37 (10) ◽  
pp. 1127-1142 ◽  
Author(s):  
Mahesh J. Phadnis ◽  
Gregory R. Carmichael ◽  
Yoichi Ichikawa ◽  
Hiroshi Hayami
Keyword(s):  
East Asia ◽  
Long Range ◽  
Acidic Deposition ◽  
Long Range Transport ◽  
Transport Models ◽  
Range Transport

Atmospheric Trajectory Analysis to Project Long-Range Migration of Black Cutworm (Lepidoptera: Noctuidae) Adults

1991 ◽  
Vol 84 (3) ◽  
pp. 879-885 ◽  
Author(s):  
Richard B. Smelser ◽  
William B. Showers ◽  
Robert H. Shaw ◽  
Elwynn S. Taylor
Keyword(s):  
Long Range ◽  
Trajectory Analysis ◽  
Black Cutworm ◽  
Range Migration ◽  
Lepidoptera Noctuidae

scholarly journals Aerosol properties over Interior Alaska from lidar, DRUM Impactor sampler, and OPC-sonde measurements and their meteorological context during ARCTAS-A, April 2008

2013 ◽  
Vol 13 (3) ◽  
pp. 1293-1310 ◽  
Author(s):  
D. E. Atkinson ◽  
K. Sassen ◽  
M. Hayashi ◽  
C. F. Cahill ◽  
G. Shaw ◽  
...  
Keyword(s):  
Long Range ◽  
Trajectory Analysis ◽  
Source Region ◽  
Asian Dust ◽  
Long Range Transport ◽  
Wildfire Smoke ◽  
Aerosol Loading ◽  
Interior Alaska ◽  
Range Transport ◽  
Optical Particle Counter

Abstract. Aerosol loading over Interior Alaska displays a strong seasonality, with pristine conditions generally prevailing during winter months. Long term aerosol research from the University of Alaska Fairbanks indicates that the period around April typically marks the beginning of the transition from winter to summer conditions. In April 2008, the NASA-sponsored "Arctic Research of the Composition of the Troposphere from Aircraft and Satellites" (ARCTAS) field campaign was conducted to analyze incursions of aerosols transported over Alaska and the Canadian North. In and around Fairbanks, Alaska, data concerning aerosol characteristics were gathered by polarization (0.693 μm) lidar, DRUM Impactor sampler, and balloon-borne optical particle counter. These data provide information on the vertical distribution and type of aerosol, their size distributions, the chemical nature of aerosol observed at the surface, and timing of aerosol loading. A detailed synoptic analysis placed these observations into their transport and source-region context. Evidence suggests four major aerosol loading periods in the 25 March–30 April 2008 timeframe: a period during which typical Arctic haze conditions prevailed, several days of extremely clear conditions, rapid onset of a period dominated by Asian dust with some smoke, and a period dominated by Siberian wildfire smoke. A focused case study analysis conducted on 19 April 2008 using a balloon-borne optical particle counter suggests that, on this day, the majority of the suspended particulate matter consisted of coarse mode desiccated aerosol having undergone long-range transport. Backtrack trajectory analysis suggests aged Siberian wildfire smoke. In the last week of April, concentrations gradually decreased as synoptic conditions shifted away from favoring transport to Alaska. An important result is a strong suggestion of an Asian dust incursion in mid-April that was not well identified in other ARCTAS measurements. The lidar and OPC-sonde unambiguously discern aerosols height stratification patterns indicative of long range transport. Identification of a dust component is suggested by DRUM sampler results, which indicate crustal species, and supported by synoptic and trajectory analysis, which indicates both a source-region lifting event and appropriate air-mass pathways.

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