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【Data Scraping Field】PM2.5 (μg/m³)

PM2.5 refers to airborne particles with an aerodynamic diameter of 2.5 micrometers or less, also known as fine particulate matter or respirable particles.

2026-06-29 16:46:40
【Data Scraping Field】Hail Diameter

Hail diameter is a core physical parameter for measuring hailstone size, typically recorded in millimeters (mm) or centimeters (cm).

2026-06-29 11:30:32
【Data Scraping Field】Fog Liquid Water Content

Fog Liquid Water Content (LWC, g/m³) refers to the mass of liquid fog droplets contained in a unit volume of air, usually expressed in grams per cubic meter. This metric describes the amount of liquid water present in fog and is an important parameter for characterizing fog intensity, microphysical structure, and impact potential. It is widely used in meteorological observation, atmospheric research, traffic safety, and aviation operations.

2026-06-26 16:32:00
【Data Scraping Field】Lightning Count (events/time period)

Lightning Count (events/time period) refers to the total number of lightning occurrences recorded within a specified time interval, such as per minute, hour, day, or during a single weather event. This metric is used to reflect the frequency and variation of lightning activity and is widely applied in meteorological monitoring, disaster prevention, power system protection, aviation operations, and outdoor safety management.

2026-05-28 17:24:55
【Data Scraping Field】Fog Duration (minutes or hours)

2026-05-28 17:20:37
【Data Scraping Field】Thunderstorm Frequency (times/hour)

Thunderstorm Frequency (times/hour) refers to the number of thunderstorm occurrences observed in a given area within a unit of time, usually per hour. It is used to describe the activity level and temporal-spatial distribution of thunderstorms. This metric is commonly applied in meteorological monitoring, hazard warning, power system protection, and aviation safety assessment, and serves as an important reference for evaluating convective weather activity.

2026-05-27 17:04:34
【Data Scraping Field】Sky Brightness

Sky Brightness refers to the apparent brightness of the sky background as observed from the ground.

2026-05-26 16:56:43
【Data Scraping Field】Visibility

Visibility refers to the maximum horizontal distance at which an observer can discern the outline of a target object in the atmosphere.

2026-04-30 13:34:57
【Data Scraping Field】Solar Altitude Angle

Solar altitude angle refers to the angle between the sun's rays and the horizontal plane of the Earth's surface.

2026-04-29 13:28:17
【Data Scraping Field】Cloud height (radar-measured)

Cloud height (radar-measured) refers to cloud top height and cloud base height information derived from electromagnetic wave pulses emitted by meteorological radar (such as weather radar or cloud radar) by receiving backscatter signals from hydrometeors (cloud droplets, raindrops, ice crystals, etc.) inside clouds.

2026-04-29 13:17:29