Smoke from Canadian wildfires that blanketed New York is obstructing the view of Earth-observing satellites.
Forest fires burning in northern Quebec this week have covered the northeastern coast of North America in smoke, putting millions under air quality warnings from Toronto, Ontario to Baltimore, Maryland.
The plumes of smoke have now become so extensive that they are hindering the operations of Earth-observing satellites, which play a crucial role in monitoring our planet.
Satellites, operated by Nasa and other space agencies, provide invaluable data on climate, weather patterns, air quality, and environmental changes.
However, the current conditions are impairing satellite observations, limiting their ability to capture accurate and detailed information.
The smoky haze acts as a barrier, reducing the amount of sunlight that reaches the satellite sensors and distorting the quality of the images and measurements collected.
This interference poses a challenge for researchers who rely on precise data to monitor the wildfires, track the spread of pollutants, assess the impact on ecosystems, and study atmospheric conditions.
Several Nasa satellites are collecting data throughout the event. For example, the Terra, Aqua, and Aura satellites observe how smoke particles affect how much light the atmosphere absorbs and reflects, while the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission collects observations of smoke height.
Scientists and space agencies are closely monitoring the situation and exploring alternative strategies to mitigate the effects of the smoky haze. One approach involves adjusting the instruments on board the satellites to optimize their performance under challenging atmospheric conditions.
Researchers are also collaborating with ground-based monitoring networks to gather additional data and compensate for the limitations caused by the obscured satellite views.
For example, data from Nasa’s ground-based Micro-Pulse Lidar Network (MPLNET) and Aerosol Robotic Network (AERONET) indicate that a significant amount of smoke is present near the surface.
Efforts are underway to develop improved satellite sensors and analytical techniques that can better interpret the smoky atmosphere.
The impact of the smoky haze on satellite observations serves as a reminder of the far-reaching consequences of wildfires and the need to address climate change that continues to exacerbate wildfire risks.
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