Objective Identification Method for Cold Air-Low Temperature Processes:A Case Study of Guangzhou
FENG Haishan
PAN Weijuan
SHEN Ziqi
Abstract：To better conduct research on cold air and low-temperature processes and assess their im-pacts,an operational and objective identification method for cold air-low temperature processes is proposed based on their synchronous characteristics.By applying this method,the cold air-low temperature processes identified between 2020 and 2022 were compared with historical records.The results show that 87％of the processes had start and end time differences within 1 day,with 47％being completely consistent.In typical cold air-low temperature processes in Guangzhou,the longest-lasting processes and those with the lowest ex-treme minimum temperatures mainly occurred in December and January,while the processes with the largest temperature drops primarily occurred between February and April.This study provides a robust and opera-tional framework for identifying cold air-low temperature processes,which is crucial for improving climate risk assessment,disaster prevention,and public health preparedness in urban areas.
Keywords：climatologycold airlow-temperature processidentification methodGuangzhou
Publication Date：2025-08-20
Online Publishing Date：2025-09-15(First online date of this platform, not the publication date of the document)
Pages：5( 23-26,32 )