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As global warming continues, convective weather events are becoming more frequent. The early stage of these storms, known as convective initiation (CI), can be monitored using geostationary satellites. However, detecting CI accurately remains a challenge.

The current detection methods still have a high rate of false alarms and missed events. One key reason for this is that the resolution of existing geostationary meteorological satellites is not yet precise enough to meet the requirements for better detection.

To address this issue, researchers from the National Satellite Meteorological Center in China have proposed a new fusion method in which the high-resolution texture information provided by Gaofen-4 (GF-4), an Earth observation satellite, is combined with the multispectral data of Fengyun-4A (FY-4A), a geostationary meteorological satellite. This approach retains the detection advantages of each satellite, ensuring the accuracy of spectral information, while fully considering the early growth patterns of convective clouds, thereby significantly enhancing the capability to detect CI.

The results have recently been published in Atmospheric and Oceanic Science Letters.

The fused data revealed a notable improvement in the detection of smaller-scale convective clouds, which often develop rapidly and can be difficult to capture using traditional observation methods. By leveraging high-resolution Earth observation satellites, forecasters gain the ability to identify these clouds much earlier in their formation.

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