Linear and Non-Linear Trends for Seasonal NO2 and SO2 Concentrations in the Southern Hemisphere (2004−2016)
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. SO2 Trends
3.1.1. PBL
3.1.2. TRL, TRM and STL
3.2. NO2 Trends
4. Discussion
5. Conclusions
Supplementary Materials
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Latitudinal Band | Q | DJF | MAM | JJA | SON |
---|---|---|---|---|---|
0°S–20°S | 388 | 387 | 298 | 379 | 359 |
20°S–40°S | 227 | 573 | 387 | 454 | 382 |
40°S–60°S | 4 | 159 | 98 | 56 | 62 |
Total upward | 555 | 921 | 480 | 314 | 602 |
Total downward | 64 | 198 | 303 | 575 | 201 |
Total analysed pixels | 10,325 | 13,490 | 12,706 | 11,551 | 11,693 |
Latitudinal Band | Q | DJF | MAM | JJA | SON |
---|---|---|---|---|---|
0°S–20°S | 439 | 399 | 324 | 394 | 333 |
20°S–40°S | 292 | 592 | 396 | 412 | 395 |
40°S–60°S | 5 | 148 | 93 | 62 | 66 |
Total upward | 666 | 956 | 555 | 362 | 592 |
Total downward | 70 | 183 | 258 | 506 | 202 |
Total analysed pixels | 10,359 | 13,521 | 12,725 | 11,567 | 11,732 |
Latitudinal Band | Q | DJF | MAM | JJA | SON |
---|---|---|---|---|---|
0°S–20°S | 339 | 345 | 304 | 368 | 280 |
20°S–40°S | 270 | 502 | 393 | 417 | 367 |
40°S–60°S | 10 | 140 | 84 | 65 | 68 |
Total upward | 495 | 768 | 487 | 300 | 450 |
Total downward | 124 | 219 | 294 | 550 | 265 |
Total analysed pixels | 10,379 | 13,554 | 12,734 | 11,590 | 11,747 |
Latitudinal Band | Q | DJF | MAM | JJA | SON |
---|---|---|---|---|---|
0°S–20°S | 1455 | 792 | 650 | 938 | 1630 |
20°S–40°S | 3382 | 1883 | 1575 | 1031 | 3144 |
40°S–60°S | 3258 | 1641 | 1715 | 1838 | 2459 |
Total upward | 7954 | 4108 | 3472 | 3461 | 7054 |
Total downward | 141 | 208 | 468 | 346 | 179 |
Total analysed pixels | 17,280 | 17,280 | 17,280 | 17,280 | 17,280 |
Latitudinal Band | Q | DJF | MAM | JJA | SON |
---|---|---|---|---|---|
0°S–20°S | 0 | 47 | 1338 | 0 | 0 |
20°S–40°S | 70 | 3179 | 5172 | 48 | 8 |
40°S–60°S | 0 | 2816 | 3782 | 1120 | 364 |
Total upward | 0 | 0 | 0 | 0 | 0 |
Total downward | 70 | 6042 | 10292 | 1168 | 372 |
Total analysed pixels | 17,280 | 17,280 | 17,280 | 17,280 | 17,280 |
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Yuchechen, A.; Lakkis, S.G.; Canziani, P. Linear and Non-Linear Trends for Seasonal NO2 and SO2 Concentrations in the Southern Hemisphere (2004−2016). Remote Sens. 2017, 9, 891. https://doi.org/10.3390/rs9090891
Yuchechen A, Lakkis SG, Canziani P. Linear and Non-Linear Trends for Seasonal NO2 and SO2 Concentrations in the Southern Hemisphere (2004−2016). Remote Sensing. 2017; 9(9):891. https://doi.org/10.3390/rs9090891
Chicago/Turabian StyleYuchechen, Adrián, Susan Gabriela Lakkis, and Pablo Canziani. 2017. "Linear and Non-Linear Trends for Seasonal NO2 and SO2 Concentrations in the Southern Hemisphere (2004−2016)" Remote Sensing 9, no. 9: 891. https://doi.org/10.3390/rs9090891