Reading economic change from space: better information for parametric insurance
Official statistics often arrive too late to capture how emerging economies are actually moving. Satellite measurements of nitrogen dioxide offer a faster, independently verifiable signal, one that can strengthen how parametric insurance is designed and monitored.
In many emerging markets, economic conditions change much faster than official statistics are published. This creates a challenge for governments, businesses and insurers trying to understand how a major event is affecting livelihoods and commercial activity. Satellite observations can help close this information gap by providing frequent and independently verifiable evidence of changes on the ground.
A recent study of Bolivia examines an alternative to nighttime lights, one of the most widely used satellite measures of economic activity. Lights are useful for locating infrastructure and urban development, but they may remain bright even when factories reduce production, fewer vehicles are moving or businesses are temporarily closed. The study instead uses satellite measurements of nitrogen dioxide, a gas released when fuel is burned. Observations from eleven Bolivian urban areas are combined into a monthly Satellite Economic Activity Index known as the ISAE.
The difference becomes especially important when economic conditions deteriorate. During periods of substantial decline, the nitrogen dioxide-based indicator correctly identified the direction of local economic growth in 75% of cases, compared with only 33% for nighttime lights. At the national level, the index began declining in June 2023, well before official statistics confirmed weaker activity. It also moved five to six months ahead of Bolivia's official monthly activity indicator.
Satellite information must nevertheless be interpreted carefully. Wildfire smoke can raise measured pollution without reflecting productive activity, while weather can move or disperse emissions. Changes in fuel policy can also affect combustion independently of wider economic conditions. The study tests these possible distortions explicitly, illustrating the importance of transparent assumptions, multiple sources of evidence and clearly defined adjustment rules.
For parametric insurance, the ISAE is best understood as an additional source of information rather than a ready-made payout trigger. It could help insurers and public institutions observe how economic activity changes after a flood, drought, wildfire, fuel disruption or other major event. It may also support the design and review of sovereign, municipal or portfolio-level protection by showing whether a physical hazard was followed by wider economic disruption and how quickly activity subsequently recovered.
The broader lesson is straightforward: useful indices should respond to the processes that produce disruption and loss, not merely measure what is easiest to observe. Nighttime lights represent infrastructure that remains in place, while nitrogen dioxide reflects combustion that can change within days. Combined with hazard observations, exposure information and evidence from the ground, signals such as the ISAE can provide a faster and clearer understanding of changing conditions, supporting better monitoring, more informed product design and stronger financial resilience.