IDRiM Podcast6 Touko 2025

#17 - Multi-scale Economic Impact Estimation of Disasters Based on Electricity Consumption and Nighttime Light Data (Dr. Ma. Flordeliza Pajarillo Del Castillo)

Abstract: This thesis addresses the limitations oftraditional disaster economic impact assessments, which often overlook spatial and temporal variations. It proposes a novel method that utilizes electricity consumption (EC) and nighttime light (NTL) data as alternative indicators toestimate economic impacts with greater spatiotemporal precision. By developing counterfactual models based on pre-disaster data, the method estimates what EC and NTL would have been without a disaster, allowing for dynamic, real-time impact assessment during events like the COVID-19 pandemic and the Taal Volcano eruption in the Philippines. The study estimated national quarterly losses from COVID-19 in 2020 and 2021, totaling 6.1 trillion PhP, with the commercial sector most affected. It also introduced the Economic Activity Reduction (EAR) index, revealing higher losses in urbanizing regions. For the Taal eruption, EC and NTL data captured the timing and location of losses, aligning with disruptions like power outages and ashfall. The thesis demonstrates how EC and NTL can complement traditional economic indicators, enabling more targeted aid allocation, timely policy interventions, and region-specific recoverystrategies. Ultimately, this method enhances the accuracy and responsiveness of disaster economic impact estimation by overcoming spatiotemporal blindness.

Guest: Dr. Ma. Flordeliza Pajarillo Del Castillo [KyotoUniversity, Japan]

Co-Hosts:

Dr. Mark Ashley Parry [Northumbria University,United Kingdom]
Dr. Haris Rahadianto [Lund University, Sweden]

Music: “Sunset” by Kai Engel, available at ⁠FreeMusic Archive⁠, licensed under CC BY 4.0.

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#77 - IDRiM 2026 Award Winners

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#75 - IDRiM 2026 - Conference Review. Part 1

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#74 - IDRIM Podcast Live - Beyond Sendai: Rethinking Disaster Risk Reduction and What Comes Next

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#73 - IDRiM Podcast Live - Future Prospect of Disaster Research from the Lens of Young Researchers

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#72 - Celebration of IDRiM 2025 YSS Winners - North America

Background:This episode celebrates the two North America-based participants who placed in the top three in last year's YSS competition. We discuss their research, how it has developed over the past ye...

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#71 - Celebration of IDRiM 2025 YSS Winners - Asia

Background:This episode celebrates the two Asia-based participants who placed in the top three in last year's YSS competition. We discuss their research, how it has developed over the past year, the b...

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#70 - Celebration of IDRiM 2025 YSS Winners - Europe

Background:This episode celebrates the two Europe-based participants who placed in the top three in last year's YSS competition. We discuss their research, how it has developed over the past year, the...

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