Table 4 Numerical features of pollution index cloud model. This table displays the cloud model parameters for various pollutants from 2014 to 2023. Each set of parameters (Ex, En, He) describes the expected value, distribution width, and fuzzy boundary of pollutant concentrations for the corresponding year.
From: Air quality assessment in Beijing based on cloud model
Year | CO | NO\(_2\) | O\(_3\) |
|---|---|---|---|
2014 | (1.26,0.8,0.34) | (55.67,23.21,4.68) | (116.19,75.7,23.23) |
2015 | (1.29,0.93,0.58) | (48.75,23.25,5.69) | (115.24,75.77,12.26) |
2016 | (1.14,0.77,0.54) | (46.37,23.11,7.21) | (113.65,75.85,18.52) |
2017 | (0.94,0.56,0.57) | (43.85,19.22,7.14) | (119.76,72.02,11.58) |
2018 | (0.81,0.41,0.13) | (39.63,18.8,1.92) | (118.87,68.67,17.56) |
2019 | (0.69,0.33,0.12) | (35.22,16.15,2.19) | (114.66,72.19,20.12) |
2020 | (0.62,0.32,0.13) | (28,14.17,4.58) | (109.63,60.29,13.39) |
2021 | (0.59,0.28,0.09) | (25.69,13.72,3.19) | (100.09,48.67,8.18) |
2022 | (0.49,0.24,0.08) | (22.3,11.91,2.46) | (111.39,60.44,14.26) |
2023 | (0.48,0.22,0.06) | (24.75,13.39,2.23) | (109.12,58.08,6.35) |
Year | \(PM_{10}\) | \(PM_{2.5}\) | SO\(_2\) |
2014 | (123.46,69.31,30.54) | (84.69,64.31,26.02) | (20.42,20.51,10.06) |
2015 | (110.17,74.52,28.57) | (79.24,65.14,27.15) | (13.02,12.55,5.77) |
2016 | (103.82,65.35,23.27) | (72.25,57.42,24.95) | (9.82,9.31,3.83) |
2017 | (88.91,54.71,49.29) | (57.35,46.01,30.34) | (7.57,6.59,4.97) |
2018 | (80.76,49.39,15.48) | (50.61,39.19,17.56) | (6.19,4.05,0.91) |
2019 | (67.2,37.93,15.02) | (41.63,29.78,11.77) | (4.42,2.67,0.92) |
2020 | (56.37,32.47,10.89) | (37.73,28.59,14.54) | (3.71,1.8,0.76) |
2021 | (61.5,40.09,22.82) | (34.28,30.54,18.03) | (2.98,0.76,0.58) |
2022 | (54.98,36.73,10.37) | (30.02,24.45,10.26) | (2.79,0.52,0.44) |
2023 | (69.25,49.73,28.37) | (34.31,27.67,13.3) | (2.89,0.56,0.48) |
