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Recently, Qianwei County has welcomed a special "environmental guardian" – a particulate matter laser radar equipped with cutting-edge technology. This "glowing" device is safeguarding the blue sky through scientific means.

Like a "medical expert" conducting physical examinations on the atmosphere, this particulate matter laser radar emits hundreds of green laser beams into the air every minute, performing a 360-degree blind spot - free "comprehensive physical check" on the city's air quality. When the laser encounters particulates such as PM2.5 and PM10 in the air, it forms reflection signals similar to how sonar detects the seabed. By analyzing these "light fingerprints," it can continuously map a dynamic 3D pollution map within a 12-kilometer range 24/7, accurately identify pollution sources like industrial waste gas, vehicle exhaust, and construction dust, generate visual pollution heat maps combined with satellite positioning, and automatically record pollution "case files" to achieve precise traceability.

During a straw burning prevention drill on May 16th, this "environmental scout" demonstrated a "textbook-style" emergency response: it accurately located an anomaly within 2 minutes after detecting abnormal data, instantly pushed coordinates, concentration, and other information to the management platform. Managers promptly assigned tasks, and grid workers extinguished the fire source within 20 minutes, achieving rapid detection and disposal of the straw burning site. The entire process improved efficiency by at least 10 times compared to traditional patrol methods.

Next, Qianwei County will build an "air-ground-space" integrated monitoring network centered on the particulate matter laser radar, combined with equipment like drones, to strengthen atmospheric pollution source monitoring, promote continuous improvement in ambient air quality, and continuously enhance residents' quality of life – making "free breathing" the new normal for Qianwei residents.(Text/Photos by Qianwei Ecological Environment Bureau)