CLIMATOLOGY AND LOW-LEVEL AIR POLLUTION POTENTIAL FROM SHIPS IN THE HAMPTON ROADS

1964 ◽  
Author(s):  
NAVY WEATHER RESEARCH FACILITY NORFOLKVA
2019 ◽  
Author(s):  
ABDUL HAFIZH AL-HAKIM

Pajajaran street is one of the main street in Bogor city which has been famous with a high density of vehicle so it has a of high levels of air pollution potential because of the vehicle emissions. This study was conducted to analysis the effectiveness of plants to absorb pollutants in the road side trees based on an assessment of the physical characteristics of the trees to support the surrounding environment and provide recommendations for increase the ecological function of Pajajaran Bogor road side trees in reducing the air pollution. The method of this study used descriptive analysis, spatial analysis, and air quality analysis used the CITYgreen 5.4. The ecological function evaluation of Pajajaran Bogor road side trees in reducing the air pollution shows there are 958 trees which very appropriate to absorb the air pollution, 238 trees which appropriate to absorb the air pollution, 70 trees which less appropriate to absorb the air pollution, and there is no tree which not appropriate to absorb the air pollution. While the function of absorbing particles evaluation shows there is one tree which very appropriate in absorbing the particles, 1136 trees which appropriate in absorbing the particles, 101 trees which less appropriate in absorbing the particles, and 73 trees which not appropriate in absorbing the particles. The result of analysis used CITYgreen 5.4 shows Pajajaran Street Bogor can reduce pollutants in the amount of 2544 lbs (1,298 ton/year) with economic benefits value by $ 6.268 (Rp75.167.175,12). Pajajaran Street Bogor need to add as many as 485 trees in an area that does not have a tree planting so as to optimally reduce the amount of pollution as much as 1.66 ton/year, equivalent to the economic value of Rp 121 095 216.


1982 ◽  
Vol 23 ◽  
pp. 97-102 ◽  
Author(s):  
A. Joukoff ◽  
L.M. Malet

2022 ◽  
pp. 118763
Author(s):  
Jiayu Xu ◽  
Yu Liu ◽  
Qiaojian Zhang ◽  
Zekang Su ◽  
Tenglong Yan ◽  
...  

Atmosphere ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1197
Author(s):  
Tingting Ju ◽  
Bingui Wu ◽  
Zhaoyu Wang ◽  
Jingle Liu ◽  
Dehua Chen ◽  
...  

In this study, relationships between low-level jet (LLJ) and low visibility associated with precipitation, air pollution, and fog in Tianjin are investigated based on observational data from January to December, 2016. Statistical results show 55% of precipitation is accompanied by LLJ, and two causes responsible for the relatively high percentage are presented. The result of case analysis shows that some southwesterly LLJs are favorable for the formation of precipitation by transporting water vapor when the water vapor channel from the South China Sea or Bengal Bay to Bohai Rim region is established. Statistical results show 55% of pollution episodes (PEs) are accompanied by LLJs. When pollutions are observed in the southern industrial regions, nocturnal southwesterly LLJ, which can carry polluted air masses from polluted regions to Tianjin and induce turbulent mixing, can enhance surface PM2.5 concentration and is favorable for the formation of surface pollution at night. Nocturnal northerly or southeasterly LLJ leads to clear air masses mixing with polluted air masses and is favorable for increasing visibility. Contributions of southwesterly LLJs to the formation of fog and precipitation are similar, which both rely on establishing the water vapor channel despite occurrence heights of LLJs being different.


Author(s):  
Markey Johnson ◽  
Jeffrey R. Brook ◽  
Robert D. Brook ◽  
Tor H. Oiamo ◽  
Isaac Luginaah ◽  
...  

1980 ◽  
Vol 7 (3) ◽  
pp. 241-244 ◽  
Author(s):  
Robert A. Preston-Whyte ◽  
Roseanne D. Diab

Atmospheric pollution over cities accumulates under light wind or stagnation conditions and, on occasion, may be supplemented by transport from distant sources. These conditions cannot easily be predicted by use of the average weather elements. However, material which is useful to decision-makers who are concerned with air pollution problems can be obtained by presenting the data, as in the case of Durban, South Africa, first in terms of the nature and characteristics of vertical mixing in the lower atmosphere, and secondly in terms of the horizontal transport of air. In this way the nature and characteristics of surface and non-surface inversions and mixingdepths, as well as of macro- and meso-scale atmospheric circulations, can more easily be appreciated. In addition, a measure of the air pollution potential can be obtained from daily maximum mixing-depth and win-speed values.


2019 ◽  
Vol 3 ◽  
pp. 125-126
Author(s):  
Forastiere F ◽  
Renzi M ◽  
Cesaroni G ◽  
Stafoggia M ◽  
Rodopolou S ◽  
...  
Keyword(s):  

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