E Gulf of witness aand Pearl River Delta in June. Fourth, the Bei- of Streptonigrin MedChemExpress Bengal as well as the coasts nearby Tonkin higher concentration in September. Third, the Bay Bengal along with the coasts nearby witness a (BTH) concentration in September. but massthe jing-Tianjin-Hebei Urban Agglomeration higher has no rainforest distribution Fourth, Beijing-Tianjin-Hebei Urban Agglomeration contribute no a high HCHO concentration population and financial activities, which (BTH) has to rainforest distribution but mass population and financial [55]. The concentration there reached itsHCHO concentration through many of the year activities, which contribute to a high maximum in 2019 through September. year [55]. The concentration there reached its maximum in 2019 around the majority of the about September.Remote Sens. 2021, 13, 4055 Remote Sens. 2021, 13, x FOR PEER REVIEW15 of16 of(a)(b)(c) (d) Figure 13. Surface concentration of HCHO in Indo-Pacific area in some typical months: (a) March; (b) June; (c) Figure 13. Surface concentration of HCHO in Indo-Pacific region in some typical months: (a) March; (b) June; (c) September; September; (d) December. (unit: g/m3).(d) December. (unit: /m ).four. Discussion 4.four.1. Improvements and Innovativeness Discussion 4.1. Improvements and Innovativeness It is actually clear that the worldwide surface distribution of HCHO with point and interval estiIt is clear that the international effectively by using HCHO with point and interval demation is capable to become obtainedsurface distribution ofneural IQP-0528 site network models like thoseestimation is capable to become To show the improvement of Sentinel-5P in pollutant overall health estimation, scribed above. obtained effectively by using neural network models like these described above. To show the improvement of Sentinel-5P in pollutant health estimation, the pointRemote Sens. 2021, 13,Remote Sens. 2021, 13, x FOR PEER REVIEW16 of17 othe point estimation model was applied to each Sentinel-5P VCD data and OMI VCD destimation model was applied to each Sentinel-5P VCDAmerica, two points can befor July the co for July 2019. Zooming in around the view of information and OMI VCD data observed from 2019. Zooming in on the view of America, two things is usually observed from the comparison. parison. Initially, Sentinel-5P is far significantly less disturbed bydisturbed by noisesatellite trail. This was was p First, Sentinel-5P is far less noise along the along the satellite trail. This cisely the target of your Sentinel-5P just before its launch its launch [56]. The improvemen precisely the objective of your designers of designers of Sentinel-5P before[56]. The improvement signal-to-noise ratio is nicely illustrated illustrated by of signal-to-noise ratio in TROPOMIin TROPOMI is wellby Figure 14. Figure 14.(a)(b)Figure 14. (a) Typical surface distribution of HCHO more than the U.S. in July 2019, derived from Sentinel-5P information; (b) Typical Figure 14. (a) Typical surface distribution of HCHO more than the U.S. in July 2019, derived from Sentinelsurface distribution of HCHO over the U.S. in July 2019, derived from OMI information (unit: g/m3).5P information; (b) Typical surface distribution of HCHO over the U.S. in July 2019, derived from OMI data (unit: /m3 ). Second, though Sentinel-5P and OMI frequently give exactly the same distribution treSecond, though Sentinel-5P and OMI typically give precisely the same distribution trend, slightly larger concentration levels in VCD information, as is shown in Figure 15. In shown ar Sentinel-5P shows an towards the non-linear character HCHO. This can be attributed towards the slightly due definitely larger level of on the.
