Sources and data provenance

The figures, research and institutional references used by Let Action Flow are listed here as an auditable public record.

Headline figures

Observed · 202401

13M+

People affected by climate emergencies in 2024, following Cyclone Remal and the subsequent monsoon floods.

Open sourceUN Bangladesh, Humanitarian Response Plan

Projection to 205002

134M

People at risk of declining living standards by 2050 due to rising temperatures and climate impacts.

Open sourceWorld Bank

Projection to 205003

13.3M

Potential internal climate migrants by 2050 under climate impact scenarios.

Open sourceWorld Bank Groundswell Report

Observed · 202504

175M+

Population of Bangladesh, a densely populated delta country highly exposed to climate risk.

Open sourceWorld Bank Population Data

Research and institutional references

Azam and Rahman (2022), spatial vulnerability of Bangladesh to climate change and extremes UNDP Bangladesh Editorial reference: SWAPNO, a journey of empowerment for rural women

Data notes

Every figure on this site carries its year and its source. Community reports are testimony, not verified statistics, and are labelled self-reported wherever they are counted.

District-level vulnerability values are demonstration placeholders and are marked as such wherever they appear.

District and upazila boundaries from geoBoundaries (CC BY 3.0 IGO), sourced from the Bangladesh Bureau of Statistics via OCHA ROAP. World coastline from Natural Earth.

The brief cites the live World Bank population series without naming a year. Confirm the year against the series before publication.