Techonnology and methods used:
R – tidyverse, lubridate, snakecase, sp, raster, spData, sf, leaflet, mapview, ggplot2, shiny, maps, devtools, geojsonio, rgdal, leaflet.esri, leaflet.extras
Python – s3fs, pandas, numpy, matplotlib, plotly
1. Business Understanding
Air pollution beyond the norms is a common problem in many locations. Examining the causes behind and being able to predict it would help control and reduce pollution, facilitate solving environmental issues and providing a better life to citizens.
Air pollution seems to be recurring problem in our city – Sofia. This matter can be affected by climate, topography and anthropogenic factors as well. Our aim with this project is to explain how different human activities affect the pollution and our health.
2. Data Understanding
The provided datasets consist of static data and dynamic data for 20 day in November 2016. Data is constructed as following:
- Weather Stability data – Data on the state of the upper atmosphere from radiosonde probes of Sofia
- Topological data – containg GPS coordinates for different points in Sofia.
- Official meteorological data for 20 days for Sofia city
- Industrial pollutants – 71 industrial emission devices; their location, height and annual debit of PM10.
- Construction sites – 389 construction sights; location and types of construction
- Household pollutants – 39944 households and questionnaire data determining what source of heating the households use.
- Data from official measurement stations – data from 4 stations located in Nadezhda, Hipodruma, Druzhba, Pavlovo for 20 days in November 2016.
- Lots of Miscellaneous tables (from the Methodology of the case) which we use to calculate the pollution based on the Dispersion model.
3. Data Preparation
Firstly, we decided to determine how the Dispersion model should apply to separate pollutants. In order to do so, we should use the Weather stability and wind speed from the meteorological data. Those factors helped us to determine how the pollution from separate emission devices will spread in the atmosphere of our city. Based on Weather stability we calculated the vertical temperature gradient in the upper atmosphere above Sofia for each of the 20 days. This helped us to determine that the Pasquill stability class of the atmosphere is type E (Slightly Stable) for the whole period.
Next step was to calculate sigmas – sigma y and sigma z, which represent the vertical and horizontal spread of the plum rise for each pollutant.
In order to visualize how different emission devices spread the pollution we choose a radial approach. We plot separate circles with different concentration of particles around the industrial pollutants. Those are plotted on a interactive map (.html) which you can find in our GitHub repo.
A snapshot of initial pollution with all parameters:
A snapshot of initial pollution with pollution spread in a radius of 1000 meters:
A snapshot of initial pollution with pollution spread in a radius of 10000 meters:
A snapshot of predicted pollution for 1 day ahead:
4. Modeling
To start modelling we measured the distances between industrial pollutants and official measuring stations. The data was used to define how concentration of different particles from industrial stations affects the PM10 concentrations measured in Sofia.
We succeeded to define what is the correlation between Industrial emission stations and to project what the pollution will be in the succeeding five days.
Our estimations for the industrial pollution:
Official measurement station pollution:
Due to some technical issues and inability to post our code and viz in the article you can find our work in the repo below:
Here you can find a repo with our code on R and Python.
The work continues!!! Check our progress in the repo.
https://dss-www-production.s3.amazonaws.com/uploads/2019/04/Initial_Pollution.html https://dss-www-production.s3.amazonaws.com/uploads/2019/04/Pollution_2016.11.21.html
15 thoughts on “Datathon – Sofia Air 2.0 – Solution – Wonder Gang: Articles on Particles”
Great job! Really good map (with the blur visualization it rocks). Your paper shows a great combo of R and Python in one task. Keep working and calculate the other factors.
Thank you for the encouraging words. We will continue working on the case.
I do like of approach of “blurring” over map for pollution spreading. It would be even better (I know you didn’t had time) to take into account surounding buildings and how they impact pollution spread to get more custom “shape” of spread instead of combination of circles but this visually tells amazing story. Keep good work of “story” presentation of other factors as well.
Thank you for your comment. Actually, we were thinkinkg to use topogrphic data to improve the shape of the spread visualization. Looking at the surrounding objects is definetly a good idea!
Love the whole idea of this blog. Thanks | https://lamonddesign.com/
If you are looking for assignment writing help, this site is just what you need. Here you can get the best papers very quickly.
https://writepaperfor.me/assignment-writing-help
Will definitely recommend this gradesfixer review to everyone who requires Academic Essay Help. I’m a college student and I seriously needed an essay assignment submitted to my professors in order to finished course work. My supervisor said it was outstanding work!
https://papergraders.net/reviews/gradesfixer-com/
Greetings, guys! In case you are looking for a reliable academic writing service, let me recommend you one website. It is called Scamfighter, and there you can find dozens of substantial reviews and reports testing the actual quality of this or that writing service company.
https://scamfighter.net/review/grademiners.org
Hmm , very interesting thoughts! I think In order for more interested people to read your thoughts, you should post it on Instagram, and use the services of https://viplikes.net/buy-instagram-likes to quickly increase the ammount of likes.
Great post! I want to know how do you write so good reviews? I’m trying to use writing services like essaywritingservices.review, what do you think about it?
http://essaywritingservices.review
Nick Jackson is a content creator for websites, blogs, articles, and social media platforms. She is keen on capturing the attention of a target audience. She offers assignment help from time to time at https://essaysservicesreviews.com/domyhomework123-review/ on a wide variety of topics. She keeps herself well-read with the changing trends of the web world.
https://slope-unblocked.io is so addicting, My whole class went to the computer lab and half of us played this game. lol
You did a great job, it’s not related to my field but after reading your whole article it’s really motivated me to write my own PhD thesis rather than Buy Phd Thesis, I mention my thesis link below please let me know your suggestion, it would be highly appreciated if you could.
here’s the link: https://eazyresearch.com/services/phd-thesis-writing
Have you bowed down before the here and powerful Oz? No, I’m not referring to the fictional wizard from Dorothy’s magical land. I’m talking about mass-marketed medical guru and Oprah protégé, Dr. Oz. And while he may be powerful, the scientific community is not convinced that his recommendations are all that great.
Hello everyone,
I want to testify about Luis Carlos who help me invest my bitcoin and made me who i am today, i never believe in bitcoin investment till i met Luis Carlos, I saw so many testimony about Luis Carlos helping people to invest their bitcoin, So i decide to contact him and invested $500 and after 7 days i receive my profit of $5,000 on my bitcoin wallet, Ever since i have been investing with them and i always receive my profit without any delay, so if you want to invest your bitcoin, Luis Carlos is the best trader you can invest with and getting your profit is guarantee, So if you want to invest just contact them and they will guide you on how start your investment . Email: [email protected] or WhatsApp : +14234516435