Climate Change and Its Impacts on Our Planet
Climate change is a critical issue driven by human activities such as burning fossil fuels and deforestation, leading to an increase in greenhouse gases. These factors contribute to the greenhouse effect, causing global climate patterns to shift unnaturally. Deforestation, in particular, disrupts the balance of carbon dioxide absorption by trees. As custodians of the Earth, we must address these challenges to safeguard our environment for future generations.
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Presentation Transcript
Comparison of EPAs AQI Comparison of EPA s AQI and WHO s and WHO s IQAir IQAir
Introduction Air Board Request to answer the following Air Board Request to answer the following Revise the AQI to match the WHO Revise the AQI to match the WHO IQAir Compare the EPA AQS to the WHO Compare the EPA AQS to the WHO IQAir Where are we with the EPA AQS? data analysis Where are we with the EPA AQS? data analysis What would our data look like using the What would our data look like using the IQAir IQAir? ? IQAir IQAir? ?
Revise the AQI to match WHO EPA AQI EPA AQI Reporting is required by EPA Federal Register 40 CFR Part 58 Air Quality Index Reporting; Final Rule, Vol. 64, No. 149 Wednesday, August 4, 1999 Reporting agencies receive EPA funding This requirement can t be replaced or modified by state or local agencies. If we stop reporting the AQI or revise the AQI from the Federal requirements the agency could be financially liable for failure to comply.
Comparison of IQAirand AQI EPA AQI EPA AQI Uses Governmental reference sensor data for CO, ozone, SO2, NO2, PM10 Data processed through the EPA s AIRNow website WHO WHO IQAir IQAir Uses Governmental reference sensor data (EPA s AirNow data) Uses low cost, public sensors (PurpleAir sensors), PM2.5only Public Sensor data are processed using a data calibration algorithm based on environmental conditions. All data are processed through the IQAir AirVisual platform Obvious differences Obvious differences IQAir s categories are based on lower concentrations than EPA s AQI IQAir presents visualization for all pollutants but they focus on PM2.5
Categories US EPA AQI US EPA AQI 6 Categories WHO WHO IQAir 7 Categories IQAir
Where we are in AQI 2021 2020 2019 EPA AQI Category No. of Days Percentage No. of Days Percentage No. of Days Percentage Good Moderate Unhealthy for Sensitive Groups Unhealthy Hazardous Total Primary Pollutant 86 23.56% 70.41% 5.48% 0.55% 135 221 36.89% 60.38% 1.91% 0.55% 0.27% 100.00% 193 168 52.88% 46.03% 1.10% 0.00% 257 20 7 2 1 4 0 2 365 100.00% 366 365 100.00% Ozone Total 171 65 94 12 125 13 106 6 197 105 87 5 82 6 72 1 2 244 123 117 4 50 20 30 Good Moderate Unhealthy for Sensitive Groups PM10 Total Good Moderate Unhealthy for Sensitive Groups Unhealthy Hazardous 1 (9/8/2020) 87 24 62 1 PM2.5 Total 69 8 57 2 2 71 50 21 Good Moderate Unhealthy for Sensitive Groups Unhealthy EPA AQS data
IQAir Status No. of 24 hour Values IQAir Sub-total % EPA AQS Sub-total % WHO IQAir Category for PM2.5 Meets WHO PM2.5 guideline Exceeds WHO PM2.5 guideline by 1 to 2 times Exceeds WHO PM2.5 guideline by 2 to 3 times Exceeds WHO PM2.5 guideline by 3 to 5 times Exceeds WHO PM2.5 guideline by 5 to 7 times Exceeds WHO PM2.5 guideline by 7 to 10 times Exceeds WHO PM2.5 guideline by over 10 times % 71 6 164 70 39 19.89% 1.68% 45.94% 19.61% 10.92% 1.96% 0.00% 67.51% ~95% 32.49% <6% 7 0 Total 24 hour period evaluated 357 100.00% IQAir data % based on EPA AQS raw data values AQS data % based on AQI data results 67.5% of the data would be in the Blue to Yellow categories, while for the EPA AQI approximately 95% of data falls in the Green to Yellow categories. EPA AQS 2020 data, site 2ZV, raw data concentration values
