We developed an app that permits users to view data at the county level in California USA from february 2020 to June 2021.
Wild forest fire is an important natural disaster that requires a complex set of data to be properly monitored and predicted. Most of the data used focus on Precipitation, Soil Moisture, Temperature, Humidity, Winds, Vegetation, Topography. However understanding the impact of human activities and mobilities on forest fire or the inverse is quite tedious.
Our app permit such understanding, We highlight burned area with 3 sets of factors:
- Natural factors
- Air factors
- Mobility factors
The set "Natural factors" focus on data such as Soil Moisture, Precipitation, Temperature.
The set "Air factors" focus on data that can relate to human activities; nitrogendioxide (NO2), carbon monoxide (CO2), aerosol optical depth (AOD).
The set Mobility factors focus on human mobility in different places; grocery and pharmacy, parks, transit stations, workplaces, and residential.
To look at your app you can just go to this website. The map will zoom automatically on California. You can just click on the county you are interested in and look at the time series of the different factors. Please look at "demonstrate your solution" section for more information.
We hope that such app permit a better understanding of forest fire and human activities and mobilities. Such question can be answered using our app:
- What is the impact on air pollution when forest fires happen ?
- Will humans leave their residential areas during forest fires ?
- What was the precipitation 2 months before a forest fire ?
- Does an increase of human mobility in parks result in more forest fires ?
- What was the temperature the month before a forest fire ?
- and so on ...
As an hillight we used the data to try to predict the burned area using a combination of different set of factors. By combining previous month data of the differents factors and the use of random forest we have seen a change in the features importance for the differents combination used.
In the table bellow, True indicate the usage of the data in the model as input data.

To sum up:
Nature -> Surface moisture anomaly, Surface temperature
Nature + Mobility -> transit_stations, residential
Nature + Air -> AOD, Surface moisture anomaly
Nature + AIR + Mobility -> AOD, transit_stations
Depending on the features used, the model gave different importance. Further study on the subject can be made using the app we created.