Preprints
https://doi.org/10.5194/egusphere-2022-1061
https://doi.org/10.5194/egusphere-2022-1061
18 Oct 2022
 | 18 Oct 2022

Sentinel-1 based analysis of the Pakistan Flood in 2022

Florian Roth, Bernhard Bauer-Marschallinger, Mark Edwin Tupas, Christoph Reimer, Peter Salamon, and Wolfgang Wagner

Abstract. In August and September 2022, Pakistan was hit by a severe flood and millions of people were impacted. The Sentinel-1 based flood mapping algorithm developed by Technische Universität Wien (TU Wien) for the Copernicus Emergency Management Service (CEMS) global flood monitoring (GFM) component was used to document the propagation of the flood from August 10 to September 23, 2022. The results were evaluated using the flood maps from the CEMS rapid mapping component. Overall, the algorithm performs reasonably with a critical success index of up to 80 %, while the detected differences are traced back to different sensors used for the flood mapping. Over the 6 weeks timespan an area of 30,492 km2 was observed to be flooded at least once, and the maximum extent was found to be present on August 30.

Florian Roth et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-1061', Anonymous Referee #1, 25 Jan 2023
    • AC1: 'Reply on RC1', Florian Roth, 15 Mar 2023
  • CC1: 'Comment on egusphere-2022-1061', Wang Jin, 09 Mar 2023
    • AC2: 'Reply on CC1', Florian Roth, 17 Mar 2023
  • RC2: 'Comment on egusphere-2022-1061', Anonymous Referee #2, 19 Mar 2023
    • AC3: 'Reply on RC2', Florian Roth, 04 Apr 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-1061', Anonymous Referee #1, 25 Jan 2023
    • AC1: 'Reply on RC1', Florian Roth, 15 Mar 2023
  • CC1: 'Comment on egusphere-2022-1061', Wang Jin, 09 Mar 2023
    • AC2: 'Reply on CC1', Florian Roth, 17 Mar 2023
  • RC2: 'Comment on egusphere-2022-1061', Anonymous Referee #2, 19 Mar 2023
    • AC3: 'Reply on RC2', Florian Roth, 04 Apr 2023

Florian Roth et al.

Data sets

Sentinel-1 based analysis of the Pakistan Flood in 2022 Florian Roth, Bernhard Bauer-Marschallinger, Mark Edwin Tupas, Christoph Reimer, Peter Salamon, Wolfgang Wagner https://doi.org/10.48436/zvvmh-nan78

Florian Roth et al.

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Short summary
In August and September 2022, millions of people were impacted by a severe flood event in Pakistan. Since many roads and other infrastructure were destroyed, satellite data was the only way of providing large scale information of the flood's impact. Based on the flood mapping algorithm developed at Technische Universität Wien (TU Wien), we mapped an area of 30,492 km2 to be flooded at least once during the study's time period. This affected area matches about the total area of Belgium.