Corrigendum to “COVID-19's impact on the atmospheric environment in the Southeast Asia region” [Sci. Total Environ. 736 (2020)/139658]

The authors regret that the printed version of the above article contained a number of errors. The correct and final version follows:

Graphical abstract

(Source of image: https://so2.gsfc.nasa.gov/no2/no2_index.html.)

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In this study, NO₂ tropospheric column amounts were obtained from the NASA website (https://so2.gsfc.nasa.gov/no2/no2_index.html). The NO₂ maps over SEA were produced using high resolution daily gridded at 0.1° × 0.1° spatial resolution, which is then averaged over a 15-day window (Krotkov et al., 2017; Lamsal et al., 2020). We used maps that represent 1 March, 31 March, and 17 April (the latest available data at the time of writing the original manuscript). We also used NO₂ data averaged over 2015–2019 (baseline), in order to detect the absolute differences between 2020 and the baseline data (Krotkov et al., 2017; Lamsal et al., 2020). We did not use the NO₂ data from TROPOMI because data prior to 2020 is limited.

Section 3.2 (pages 5–6) and Section 5 page 9

NO₂ concentrations should be read as NO₂ tropospheric column amounts.

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Fig 4: Absolute differences of Aura-OMI NO₂ tropospheric column amounts in March (a) and April (b) 2020 from the 2015–2019 period mean over Southeast Asia.

(Source of image: https://so2.gsfc.nasa.gov/no2/no2_index.html.)

Suppl. Fig. 2: Aura-OMI NO₂ tropospheric column amounts over and around major cities in Southeast Asia averaged for a window of 15 days.

(Source of images: https://so2.gsfc.nasa.gov/no2/no2_index.html.)

Table 1: Reduction in Aura-OMI NO₂ levels in 2020 as compared to 5-years average values. Data averaged over a window of 15-days on 1 March, 31 March and 17 April.

(Source of data: https://so2.gsfc.nasa.gov/no2/no2_index.html.)

The authors would like to apologise for any inconvenience caused.