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ISO,variant,category,hex,category_lower,category_upper,pollutant,units,averaging_period,concentration_lower,concentration_upper | ||
IL,,g,a,0,49,PM2.5,ug/m3,24,0,18.5 | ||
IL,,g,a,0,49,PM10,ug/m3,24,0,65 | ||
IL,,g,a,0,49,SO2,ppb,1,0,67 | ||
IL,,g,a,0,49,NO2,ppb,1,0,53 | ||
IL,,g,a,0,49,O3,ppb,8,0,35 | ||
IL,,g,a,0,49,CO,ppb,0.5,0,26 | ||
IL,,g,a,0,49,NOX,ppb,0.5,0,250 | ||
IL,,h,b,50,100,PM2.5,ug/m3,24,18.6,37 | ||
IL,,h,b,50,100,PM10,ug/m3,24,66,129 | ||
IL,,h,b,50,100,SO2,ppb,1,68,133 | ||
IL,,h,b,50,100,NO2,ppb,1,54,105 | ||
IL,,h,b,50,100,O3,ppb,8,36,70 | ||
IL,,h,b,50,100,CO,ppb,0.5,27,51 | ||
IL,,h,b,50,100,NOX,ppb,0.5,251,499 | ||
IL,,i,c,101,200,PM2.5,ug/m3,24,37.5,84 | ||
IL,,i,c,101,200,PM10,ug/m3,24,130,215 | ||
IL,,i,c,101,200,SO2,ppb,1,134,163 | ||
IL,,i,c,101,200,NO2,ppb,1,106,160 | ||
IL,,i,c,101,200,O3,ppb,8,71,97 | ||
IL,,i,c,101,200,CO,ppb,0.5,52,78 | ||
IL,,i,c,101,200,NOX,ppb,0.5,500,750 | ||
IL,,j,d,201,300,PM2.5,ug/m3,24,84.5,130 | ||
IL,,j,d,201,300,PM10,ug/m3,24,216,300 | ||
IL,,j,d,201,300,SO2,ppb,1,164,191 | ||
IL,,j,d,201,300,NO2,ppb,1,161,213 | ||
IL,,j,d,201,300,O3,ppb,8,98,117 | ||
IL,,j,d,201,300,CO,ppb,0.5,79,104 | ||
IL,,j,d,201,300,NOX,ppb,0.5,751,1000 | ||
IL,,k,e,301,400,PM2.5,ug/m3,24,130.5,165 | ||
IL,,k,e,301,400,PM10,ug/m3,24,301,355 | ||
IL,,k,e,301,400,SO2,ppb,1,192,253 | ||
IL,,k,e,301,400,NO2,ppb,1,214,260 | ||
IL,,k,e,301,400,O3,ppb,8,118,155 | ||
IL,,k,e,301,400,CO,ppb,0.5,105,130 | ||
IL,,k,e,301,400,NOX,ppb,0.5,1001,1200 | ||
IL,,l,f,401,500,PM2.5,ug/m3,24,165.5,200 | ||
IL,,l,f,401,500,PM10,ug/m3,24,356,430 | ||
IL,,l,f,401,500,SO2,ppb,1,254,303 | ||
IL,,l,f,401,500,NO2,ppb,1,261,316 | ||
IL,,l,f,401,500,O3,ppb,8,15,188 | ||
IL,,l,f,401,500,CO,ppb,0.5,131,156 | ||
IL,,l,f,401,500,NOX,ppb,0.5,1201,1400 |
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# Israel | ||
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## Air Quality Index (AQI) | ||
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```js | ||
import {breakpointsTable} from "../components/table.js"; | ||
import { parseBreakpointsCsv, tableReshape, colorScaleReshape } from '../utils/utils.js'; | ||
import { colorScale } from '../components/color-scale.js'; | ||
const breakpoints = await FileAttachment('../data/israel/breakpoints.csv').text(); | ||
const data = parseBreakpointsCsv(breakpoints); | ||
``` | ||
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## Background | ||
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The Israel Air Quality Index (AQI) was developed by the Ministry of Environmental Protection. Seven criteria pollutants, PM<sub>2.5</sub>, PM<sub>10</sub>, CO, O<sub>3</sub>, SO<sub>2</sub>, NO<sub>2</sub>, and NO<sub>x</sub>, are covered in the methodology. | ||
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## Color scale | ||
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The Israel AQI is represented with a diverging scale composed of 4 value bands ranging from -400 to 100, with a distinct color for each band. | ||
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```js | ||
colorScale([{color: '#984806', label: 'Very low', range: '−201–−400'},{color: '#ff0000', label: 'Low', range: '−1–−200'},{color: '#ffff00', label: 'Medium', range: '0–50'}, {color: '#04ff00', label: 'Good', range: '51–100'}]) | ||
``` | ||
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_Note_: Adapted from "חישוב מדד איכות האוויר" [https://air.sviva.gov.il/Pagesfiles/החישוב שלמדדזיהוםהאוויר AQIלאתרהחדש.pdf](https://air.sviva.gov.il/Pagesfiles/%D7%94%D7%97%D7%99%D7%A9%D7%95%D7%91%20%D7%A9%D7%9C%20%D7%9E%D7%93%D7%93%20%D7%96%D7%99%D7%94%D7%95%D7%9D%20%D7%94%D7%90%D7%95%D7%95%D7%99%D7%A8%20AQI%20%D7%9C%D7%90%D7%AA%D7%A8%20%D7%94%D7%97%D7%93%D7%A9.pdf). Accessed November 12, 2024. | ||
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## Methods | ||
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The Israel AQI uses a sub-index method where each pollutant is calculated against pollutant-specific breakpoints into a pollutant sub-index value. All pollutants are then compared and the largest sub-index value determines the full composite AQI value. The Ministry of Environmental Protection provides no specific guidance provided on the minimum number of pollutants required to compute a full composite index. | ||
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Pollutant breakpoints are defined in the table below: | ||
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```js | ||
breakpointsTable(data, true, false) | ||
``` | ||
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_Note_: Adapted from "חישוב מדד איכות האוויר" [https://air.sviva.gov.il/Pagesfiles/החישוב שלמדדזיהוםהאוויר AQIלאתרהחדש.pdf](https://air.sviva.gov.il/Pagesfiles/%D7%94%D7%97%D7%99%D7%A9%D7%95%D7%91%20%D7%A9%D7%9C%20%D7%9E%D7%93%D7%93%20%D7%96%D7%99%D7%94%D7%95%D7%9D%20%D7%94%D7%90%D7%95%D7%95%D7%99%D7%A8%20AQI%20%D7%9C%D7%90%D7%AA%D7%A8%20%D7%94%D7%97%D7%93%D7%A9.pdf). Accessed November 12, 2024. | ||
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Using the breakpoint values in the table above, a [piecewise linear function](/methods#piecewise-linear-function) is used to convert the concentration values to AQI values. The piecewise linear function is defined as: | ||
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```js | ||
import {piecewiseLatexDoc} from '../components/piecewise.js'; | ||
``` | ||
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```js | ||
piecewiseLatexDoc('AQI') | ||
``` | ||
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After computing the AQI value for each measuremed pollutant, the maximum pollutant value it taken as the prevailing value. | ||
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```tex | ||
{AQI{^\prime}} = {Max}({I}_{PM_{2.5}},{I}_{PM_{10}},{I}_{CO},{I}_{O_{3}},{I}_{SO_{2}},{I}_{NO_{2}},{I}_{NO_{x}}) | ||
``` | ||
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The final Israel AQI value is then derived by substracting the previous AQI value from 100. | ||
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```tex | ||
AQI = 100 - AQI{^\prime} | ||
``` | ||
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## References | ||
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ניטור אוויר בישראל המשרד להגנת הסביבה (n.d) [https://air.sviva.gov.il/](https://air.sviva.gov.il/). Accessed November 12 2024. |
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