Affiliation:
1. School of Remote Sensing and Information Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
2. Hebei Collaborative Innovation Center for Aerospace Remote Sensing Information Processing and Application, Langfang 065000, China
3. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
Abstract
Clouds are diverse and complex, making accurate cloud type identification vital in improving the accuracy of weather forecasting and the effectiveness of climate monitoring. However, current cloud classification research has largely focused on daytime data. The lack of visible light data at night presents challenges in characterizing nocturnal cloud attributes, leading to difficulties in achieving continuous all-day cloud classification results. This study proposed an all-day infrared cloud classification model (AInfraredCCM) based on XGBoost. Initially, the latitude/longitude, 10 infrared channels, and 5 brightness temperature differences of the Himawari-8 satellite were selected as input features. Then, 1,314,275 samples were collected from the Himawari-8 full-disk data and cloud classification was conducted using the CPR/CALIOP merged cloud type product as training data. The key cloud types included cirrus, deep convective, altostratus, altocumulus, nimbostratus, stratocumulus, stratus, and cumulus. The cloud classification model achieved an overall accuracy of 86.22%, along with precision, recall, and F1-score values of 0.88, 0.84, and 0.86, respectively. The practicality of this model was validated across all-day temporal, daytime/nighttime, and seasonal scenarios. The results showed that the AInfraredCCM consistently performed well across various time periods and seasons, confirming its temporal applicability. In conclusion, this study presents an all-day cloud classification approach to obtain comprehensive cloud information for continuous weather monitoring, ultimately enhancing weather prediction accuracy and climate monitoring.
Funder
The Major Project of High-Resolution Earth Observation System
North China Institute of Aerospace Engineering Foundation of Doctoral Research
Science and Technology Research Projects of Higher Education Institutions in Hebei Province
Hebei Province Graduate Student Innovation Ability Training Funding Project
North China Institute of Aerospace Engineering’s University-level Innovation Project
Subject
General Earth and Planetary Sciences
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