STEM与日常科技·英语30篇（1）
17 / 30
正在校验访问权限...
Satellites That Track Wildfires in Real Time
实时追踪野火的卫星系统
-
Geostationary and polar-orbiting satellites like GOES and Sentinel-3 carry infrared sensors that detect heat signatures day and night.
-
These instruments spot fire hotspots even through smoke by measuring thermal radiation emitted at specific wavelengths.
-
Algorithms combine temperature data, land cover maps, and wind forecasts to predict fire spread direction and speed.
-
Fire managers receive automated alerts within minutes of satellite detection, allowing faster evacuation and resource deployment.
-
High-resolution imagery from Landsat and VIIRS helps map active fire perimeters and assess burn severity afterward.
-
Satellites cannot see flames directly through thick clouds, but multi-sensor fusion compensates using atmospheric modeling.
-
New constellations like FireSat plan dozens of small satellites to image any location every 10 minutes during peak fire season.
-
Data from space complements ground cameras and drone surveys, creating layered situational awareness for emergency teams.
-
Long-term satellite records also reveal how climate change increases fire frequency and intensity across vulnerable regions.
-
This orbital monitoring transforms wildfire response from reactive to increasingly predictive and proactive.