scholarly journals Estimation of Vessel Emissions Inventory in Qingdao Port Based on Big data Analysis

Symmetry ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 452 ◽  
Author(s):  
Xing Sun ◽  
Zhe Tian ◽  
Reza Malekian ◽  
Zhixiong Li

Exhaust emissions from vessels have increasingly attracted attention in the continuously growing marine transport world trade market. The International Maritime Organization (IMO) has introduced a number of measures designed to reduce exhaust emissions from global shipping. As one of the busiest ports in the world, Qingdao port has been studied to propose possible support to the development of efficient emission reduction. In this study, a large amount data of emissions inventory in Qingdao port was used to predict its annual exhaust emissions, and hence, to help understand maritime pollution in Qingdao port. Bigdata analysis methodology was employed to perform accurate predictions on vessel emissions. The analysis results show that the emissions were dominated by container ships, oil tankers, and bulk cargo ships. The comparison between Qingdao port and other ports in emission control areas demonstrates the necessity of control measures for exhaust emissions. The adoption of shore power and efficient cargo handling seems to be a potential solution to reduce exhaust emissions. The findings of this study are meaningful for maritime safety administration to understand the current emission situation in Qingdao port, propose corresponding control measures, and perform pollution prevention.

2021 ◽  
Vol 13 (10) ◽  
pp. 5685
Author(s):  
Panbo Guan ◽  
Hanyu Zhang ◽  
Zhida Zhang ◽  
Haoyuan Chen ◽  
Weichao Bai ◽  
...  

Under the Air Pollution Prevention and Control Action Plan (APPCAP) implemented, China has witnessed an air quality change during the past five years, yet the main influence factors remain relatively unexplored. Taking the Beijing-Tianjin-Hebei (BTH) and Yangtze River Delta (YRD) regions as typical cluster cities, the Weather Research Forecasting (WRF) and Comprehensive Air Quality Model with Extension (CAMx) were introduced to demonstrate the meteorological and emission contribution and PM2.5 flux distribution. The results showed that the PM2.5 concentration in BTH and YRD significantly declined with a descend ratio of −39.6% and −28.1%, respectively. For the meteorological contribution, those regions had a similar tendency with unfavorable conditions in 2013–2015 (contribution concentration 1.6–3.8 μg/m3 and 1.1–3.6 μg/m3) and favorable in 2016 (contribution concentration −1.5 μg/m3 and −0.2 μg/m3). Further, the absolute value of the net flux’s intensity was positively correlated with the degree of the favorable/unfavorable weather conditions. When it came to emission intensity, the total net inflow flux increased, and the outflow flux decreased significantly across the border with the emission increasing. In short: the aforementioned results confirmed the effectiveness of the regional joint emission control and provided scientific support for the proposed effective joint control measures.


2016 ◽  
Vol 04 (04) ◽  
pp. 1650027
Author(s):  
Rong ZHU

Analysis of the meteorological conditions for atmospheric pollutant dispersion before and after the 2014 APEC meeting shows very significant effects of air pollution prevention and control measures on the meeting. It proves that the proper measures to control air pollution in the Beijing-Tianjin-Hebei Region are: establishing a regional emergency response mechanism to reduce emissions in the case of heavy air pollution, strengthening the local emergency response measures for emission reduction, and enhancing the early warning system for weather conditions conducive to heavy air pollution.


2001 ◽  
Vol 43 (5) ◽  
pp. 239-244 ◽  
Author(s):  
J. Li

Oil spills in industrialized cities pose a significant threat to their urban water environment. The largest city in Canada, the city of Toronto, has an average 300–500 oil spills per year with an average total volume of about 160,000 L/year. About 45% of the spills was eventually cleaned up. Given the enormous amount of remaining oil entering into the fragile urban ecosystem, it is important to develop an effective pollution prevention and control plan for the city. A Geographic Information System (GIS) planning model has been developed to characterize oil spills and determine preventive and control measures available in the city. A database of oil spill records from 1988 to 1997 was compiled and geo-referenced. Attributes to each record such as spill volume, oil type, location, road type, sector, source, cleanup percentage, and environmental impacts were created. GIS layers of woodlots, wetlands, watercourses, Environmental Sensitive Areas, and Areas of Natural and Scientific Interest were obtained from the local Conservation Authority. By overlaying the spill characteristics with the GIS layers, evaluation of preventive and control solutions close to these environmental features was conducted. It was found that employee training and preventive maintenance should be improved as the principal cause of spills was attributed to human errors and equipment failure. Additionally, the cost of using oil separators at strategic spill locations was found to be $1.4 million. The GIS model provides an efficient planning tool for urban oil spill management. Additionally, the graphical capability of GIS allows users to integrate environmental features and spill characteristics in the management analysis.


2013 ◽  
Vol 864-867 ◽  
pp. 115-124 ◽  
Author(s):  
Bing Qiao ◽  
Shen Li

Focusing on the environmental problems caused by VOCs emission and photochemical reactions in petroleum wharf and reservoir areas, a field experiment was conducted in Zhanjiang port. The VOCs emission and photochemical reaction, VOCs source model and the photochemical reaction mechanism were discussed. Through analyzing and comparing the measured and simulated results, firstly, a simplified mechanism model with the chain reaction balance coefficient is developed; secondly, VOCs emission amount during the temperature rising period (3h daily) is corrected as doubling the normal dose; thirdly, VOCs consumption amount during the photochemical reaction period (6h daily) is estimated as being 71.8% of VOCs emission amount; finally, the derived photochemical reaction equilibrium coefficient of O3 and PM were 0.084 and 0.79. Seven kinds of emission source models (including pipeline and valve leakage, fixed tank big breath with oiling, floating roof tank oiling and pumping loss, fixed tank small breath with temperature rising, oil storage still loss of internal and external floating roof tanks, ship and tank loading emissions) were applied to analyze the operation scenario and emission inventory in typical petroleum wharf and reservoir areas, of which the annual throughput is 3000 ´ 104 tons, and the annual average temperature is 22 °C. The calculated annual VOCs emission with modification is 1555.88 t. Using the VOCs emission and photochemical reaction models for different regions of the port, VOCs and PM emission inventories of major Chinese ports were calculated. The total emission amounts of VOCs and PM in 2012 were approximately 43296 t and 6140 t, mainly distributed in the port group located areas in Yangtze River Delta, Bohai rim and Pearl River Delta, as well as Beibu Gulf, Strait West. As the emission sources located more densely and the emission more intense, there will be more adverse cumulative effect on the regional air quality. Therefore, it is necessary to adopt more active and effective air pollution prevention and control measures in petroleum wharf and reservoir areas.


Author(s):  
Mohd Hapiz Mahaiyadin ◽  
Zakiah Samori

At the end of December 2019, a pandemic of life-threatening disease known as COVID-19, caused by a virus that is highly infective and capable of damaging the respiratory system of a human body, to eventually causing death within a short span of time, has been reported in Wuhan, China. This virus has spread to hundreds of countries with hundred thousand positive cases of COVID-19, as well as thousands of death recorded until April 2020. Similarly, Malaysia also faces the pandemic of COVID-19 and recorded an increase of positive cases with more than 50 deaths until today. Multiple drastic preventive measures and steps have been implemented by the authorities in Malaysia to prevent the spread of the COVID-19 outbreak. Hence, this study is conducted to identify control measures that have been used globally, by looking into recent literature studies and focusing on the enforcement of Restriction of Movement Order (RMO) measure in Malaysia. In evaluating the legality of the implementation, the concept of siasah syar’iyyah, which is an effective mechanism in safeguarding the public interest or common good as required in Islam, must be taken into consideration. Therefore, qualitative methodology was duly adopted to explore the jurisprudential approach of prior Muslim governments, by analyzing highly regarded principal references that addressed similar cases. The basic principles of Islam, as contained in the Quran and ḥadīth of Rasulullah PBUH, applied in the decision making process and the rationality of actions taken in addressing any pandemic of disease would also be observed through data analysis methodology (content analysis). The approach of Islamic jurispru-dence methodology that is relevant and its application to this issue is also very important to be elaborated to understand that the process used before arriving at each decision by the authorities should adhere to the concept of maqāṣid and main principles of sharī‘ah. The result of the study found that the preventive measures to control the pandemic outbreak currently implemented by Malaysian government as well as the policies being enforced in dealing with the life-threatening pandemic is consistent with the injunctions of Islamic law that should be obeyed by all parties. Abstrak Pada akhir Disember 2019, pandemik penyakit yang mengancam nyawa manusia dikenali sebagai COVID-19, sejenis virus yang mudah dijangkiti, mampu merosakkan sistem respiratori tubuh manusia seterusnya menyebabkan kematian dalam jangka masa pendek telah dilaporkan berlaku di Wuhan, China. Virus ini telah merebak ke ratusan buah negara dengan  ratusan ribu kes positif COVID-19 beserta ribuan kematian telah dicatatkan sehingga April 2020. Malaysia turut  berdepan dengan wabak COVID-19 dan merekodkan peningkatan kes positif dengan lebih 50 kematian setakat  hari ini. Pelbagai langkah dan kaedah kawalan drastik telah dilaksanakan oleh badan berautoriti di Malaysia untuk mengawal penularan wabak COVID-19. Justeru kajian ini dibuat  untuk mengenalpasti kaedah-kaedah pengawalan yang dilaksanakan di peringkat global dengan melihat kajian-kajian literatur terkini dengan penumpuan kepada penguatkuasaan kaedah Perintah Kawalan Pergerakan (PKP) di Malaysia. Dalam menilai kesahan pelaksanaan, konsep siasah syar’iyyah yang merupakan satu mekanisme efektif dalam menjaga kemaslahatan awam seperti yang dituntut oleh Islam harus diambilkira. Oleh yang demikian, metod kualitatif digunapakai untuk meneroka pendekatan ijtihad kerajaan Islam terdahulu dengan menganalisis kitab-kitab muktabar dalam menangani beberapa kes yang sama. Prinsip-prinsip asas Islam yang terkandung dalam al-Quran dan sunah Rasululullah SAW dalam proses membuat keputusan dan kewajaran tindakan yang perlu diambil dalam menangani suatu wabak penyakit akan turut diteliti melalui kaedah analisis data (content analysis). Pendekatan kaedah-kaedah memastikan yang relevan serta pengaplikasiannya dalam isu ini juga sangat penting untuk diperhalusi bagi memahami bahawa proses setiap keputusan yang diambil tindakan oleh badan berautoriti perlu menepati konsep maqasid dan prinsip utama syariah. Hasil kajian mendapati, kaedah kawalan penularan wabak yang sedang dijalankan oleh kerajaan Malaysia berserta dasar dan polisi yang dikuat kuasakan dalam menangani pandemik yang mengancam nyawa masyarakat adalah bertepatan dengan perintah syarak yang wajib dipatuhi oleh semua pihak.


Author(s):  
LI Yunyan ◽  
SUN Guihua ◽  
DI Peng

In recent years, Beijing has been more often confronted with serious haze pollution, especially in autumn and winter. The People’s Government of Beijing Municipality has adopted a package of measures to control the haze pollution with its best efforts. To objectively evaluate how effective these haze pollution control measures are from different perspectives and in an all-round way, it is necessary to adopt a scientific and reasonable approach. Based on the Balanced Scorecard (BSC) idea, we establish a system of indexes to evaluate the government performance of Beijing in haze pollution control from the four perspectives of development quality, public services, government management and development potential, and use a combination of analytic hierarchy process (AHP) and entropy weight method (EWM) to determine the index weights, and objectively evaluate Beijing’s performance in haze pollution control from 2010 to 2016. The results show that the scores for the four perspectives are all on the rise, and since the implementation of the Air Pollution Prevention and Control Action Plan in 2013, the government’s haze pollution control measures have achieved significant results, and made a much higher overall score. On that basis, we propose the optimized path for Beijing’s haze pollution control, namely, accelerating the upgrading of development quality, improving the public services level, strengthening the government management, tapping the development potential of haze pollution control and increasing the linkage and cooperation between the governments of Beijing, Tianjin and Hebei.


2020 ◽  
Author(s):  
Le Yuan ◽  
David Carruthers ◽  
Christina Hood ◽  
Roderic L. Jones ◽  
Olalekan A.M. Popoola ◽  
...  

<p>The time lag between the occurrence of emissions and the compilation of an inventory is inevitable. When an emissions inventory is used to simulate air quality, uncertainties in the emissions are propagated into uncertainties in the modelled pollutant concentrations. Such uncertainties can be particularly high in regions undergoing rapid emission changes. Beijing, for instance, has implemented a series of pollution control measures over the past several years and various studies have confirmed significant decreases in the emissions of pollutants such as CO and NO<sub>X</sub>. Hence, it is crucial to quantify and constrain the uncertainties in existing emission estimates for this region.</p><p>We sample the uncertainties in an emissions inventory for Beijing using a high-resolution advanced Gaussian dispersion model with perturbed emissions ensembles (PEEs), and constrain these uncertainties using a comprehensive set of in situ observations, including vertically resolved measurements made from a tower in central Beijing using low-cost sensors. We first construct a PEE by varying key emission parameters including source sectors, vertical and diurnal profiles within their uncertainty ranges estimated through expert elicitation. By removing the baseline contribution to the concentrations, we are able to evaluate the performance of the PEE in simulating the local signal. Based on knowledge gained from the initial PEE, we design a second PEE with optimised uncertainty ranges with which we constrain the uncertainties in the base emission estimates.</p><p>Our study shows the applicability of perturbed emissions ensembles and high-resolution, three-dimensional observations in systematically sampling and constraining emission uncertainties. This method has wide implications for air quality modelling, particularly in regions with rapid emission changes or for studies in which emissions inventories are out-dated.</p>


Ergonomics ◽  
2021 ◽  
pp. 1-30
Author(s):  
Farhad Azimi Yancheshmeh ◽  
S. Hossein Mousavizadegan ◽  
Amin Amini ◽  
Andrew P Smith ◽  
Reza Kazemi

2003 ◽  
Vol 40 (01) ◽  
pp. 25-33
Author(s):  
Jeom Kee Paik

The double-hull design concept is one of the effective ways for oil pollution prevention during collision and grounding accidents of oil tankers. Arguably there might be better design alternatives which improve the structural performance of ships against collision and grounding when compared to the thus far well accepted double-hull concept, or even a double hull that is better in comparison to what is being routinely achieved by today's design methods. In this paper, a recent state-of-the-art review is undertaken on the literature related to more rational tanker structural design procedures and some innovative design concepts for tanker structures against ship collisions and grounding.


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