Problems of correlation of global and local monitoring of air pollution

1982 ◽  
Vol 2 (4) ◽  
pp. 393-402 ◽  
Author(s):  
M. E. Berlyand ◽  
N. Sh. Volberg ◽  
R. F. Lavrinenko ◽  
E. N. Rusina
Keyword(s):  
Air Pollution ◽  
Local Monitoring ◽  
Global And Local

Global Technology for Local Monitoring of Air Pollution in Dhaka

2020 ◽  
Author(s):  
Susmita Dasgupta ◽  
M. Khaliquzzaman ◽  
David Wheeler
Keyword(s):  
Air Pollution ◽  
Local Monitoring

scholarly journals AIR POLLUTION AND ITS IMPACT ON CLIMATE CHANGES IN IRAQ

2021 ◽  
Vol 03 (02) ◽  
pp. 1-14
Author(s):  
Hodoud Mohemad Aboode ALTUFYLY ◽  
Itab Yousef ALLUHAIBI
Keyword(s):  
Climate Change ◽  
Air Pollution ◽  
Climate Changes ◽  
Airborne Pollutants ◽  
Control Climate ◽  
Rain Fall ◽  
And Control ◽  
Global And Local ◽  
The Impact ◽  
Atmospheric Concentrations

The issue of air pollution and its impact on climate change is a subject of great global and local interest. Significant attention is being paid to Iraq by distributing a range of observation and monitoring stations for atmospheric concentrations of gases and pollutants, with permanent pollution centers or sources in Iraq and the most prominent causes being examined, as well as the impact of airborne pollutants on climate component values This was clearly reflected in the climate changes, the most prominent feature of which was the rise in temperatures and the lack of rain fall in Mosul, Baghdad and Basra stations, and this was clearly reflected in the environment, where drought and death of animals were evident, especially in the southern marshes of Iraq. The study developed a range of ways to reduce air pollution and control climate change by adopting a range of means to adapt to it, thus classifying Iraq among the countries with fragile ecosystems, which have a quick impact on air pollutants.

Fatigue Estimation in Deepwater Risers Based on Wavelets and Second Order Blind Identification

2012 ◽  
Author(s):  
Chaojun Huang ◽  
Satish Nagarajaiah ◽  
Nadathur Varadarajan
Keyword(s):  
Damage Detection ◽  
Second Order ◽  
Blind Identification ◽  
Corrosion Failure ◽  
Local Monitoring ◽  
Identification Method ◽  
Global Identification ◽  
Fatigue Estimation ◽  
Deepwater Risers ◽  
Global And Local

The safety of deepwater risers is essential for sustainable operation of offshore platforms. The structural health monitoring (SHM) system for deepwater risers is important to detect damage and perform repairs before failure occurs. Two main sources of damage are fatigue and corrosion. Failure of the riser would not only be an economical and environmental disaster, but also have far reaching consequences affecting communities. Combining global and local monitoring can greatly increase the accuracy of damage detection and fatigue estimation. Local inspection using robotic Magnetic Flux leakage (MFL) sensors is efficient and provides high resolution estimate of wall thickness changes due to corrosion or damage, while proposed vibration-based system identification can estimate global damage locations and fatigue life. A new SHM system for deepwater risers was recently developed to monitor damage to the risers with both global and local monitoring methods proposed in this paper. The global monitoring is achieved by wavelet transform (WT) and second order blind identification (SOBI) method, from which, the likely location of fatigue damage is estimated. Once the location of the damage is identified by the proposed Wavelets/SOBI global identification method, local monitoring is performed using a robotic crawler with MFL sensors to further estimate the extent of the damage. Local monitoring with MFL sensors is verified by experimental results. Wavelets/SOBI global identification method is verified using Gulfstream test data. Possible applications for the proposed SHM systems are for deepwater risers and deepwater platforms. A robotic MFL crawler can be used for in-line inspection for various pipelines. The proposed damage detection method and fatigue estimation can be adapted to other offshore structures, both fixed and floating. The proposed global method can also be used to analyze Tensioned Leg Platforms (TLP). To demonstrate the applicability of the proposed Wavelets/SOBI method to risers and floating platforms, verification using Gulfstream riser field data and TLP model data is presented in the paper.

Developing an optical sensor for local monitoring of air pollution in México

2009 ◽  
Vol 76 (5) ◽  
pp. 274 ◽  
Author(s):  
M. Perevoshchikova ◽  
G. E. Sandoval-Romero ◽  
V. Argueta-Diaz
Keyword(s):  
Air Pollution ◽  
Optical Sensor ◽  
Local Monitoring

Technical Synergies and Trade-Offs Between Abatement of Global and Local Air Pollution

2017 ◽  
Vol 70 (1) ◽  
pp. 191-221 ◽  
Author(s):  
Jorge Bonilla ◽  
Jessica Coria ◽  
Thomas Sterner
Keyword(s):  
Air Pollution ◽  
Trade Offs ◽  
Local Air Pollution ◽  
Global And Local

Sunspot Groups as Tracers of Sub-Surface Processes

2000 ◽  
Vol 179 ◽  
pp. 155-160
Author(s):  
M. H. Gokhale
Keyword(s):  
Magnetic Flux ◽  
Indian Institute ◽  
Surface Processes ◽  
The Sun ◽  
Global And Local ◽  
Sunspot Groups

AbstractData on sunspot groups have been quite useful for obtaining clues to several processes on global and local scales within the sun which lead to emergence of toroidal magnetic flux above the sun’s surface. I present here a report on such studies carried out at Indian Institute of Astrophysics during the last decade or so.

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