气象与环境学报2024，Vol.40Issue(2)：34-40,7.DOI:10.3969/j.issn.1673-503X.2024.02.005
1961-2021年黑龙江省春播期东北冷涡气候影响特征
Characteristics of climate impact of Northeast China Cold Vortex during spring sowing period in Heilongjiang province from 1961 to 2021
摘要
Abstract
Using daily surface precipitation and temperature data from 62 stations in Heilongjiang province from 1961 to 2021 and the National Centers for Environmental Prediction/the National Center for Atmospheric Research(NCEP/NCAR)reanalysis data,we statistically analyzed the characteristics of Northeast China Cold Vortex(NC-CV)that lasted 3 days or more during the spring sowing period and its impact on climatic factors.The results show that a total of 233 NCCV events occurred on a total of 958 days during the spring sowing periods of 61 years.The occurrence frequency and day numbers of NCCV exhibited an increasing trend,and the occurrence frequency of NCCV had a significantly negative correlation with the duration of a single cold vortex.The precipitation contribu-tion of NCCV was about 43.29%,and the frequency of heavy precipitation days and rainstorm days during NCCV processes was relatively high,being 48.66%and 59.46%,respectively.The NCCV had no significant impact on air temperature during the spring sowing period.At 500 hPa geopotential height field,there was a good positive correlation between the NCCV and the blocking high area from Lake Baikal to Okhotsk Sea.More than 30%of the NCCV activities were accompanied by the Okhotsk blocking high.The Okhotsk blocking high enhanced the cold vortex precipitation,but had no significant effect on the low temperature during the NCCV process.关键词
东北冷涡/阻塞高压/春播期/环流特征Key words
Northeast China Cold Vortex(NCCV)/Blocking high pressure/Spring sowing period/Circulation char-acteristics分类
天文与地球科学引用本文复制引用
马舒扬,李永生,班晋,赵佳莹,王营..1961-2021年黑龙江省春播期东北冷涡气候影响特征[J].气象与环境学报,2024,40(2):34-40,7.基金项目
中国气象局气象能力提升联合研究专项(22NLTSY001)、黑龙江省自然科学基金项目(LH2022D022)和中国气象局沈阳大气环境研究所联合开放基金项目(2021SYIAEKFMS10)共同资助. （22NLTSY001）
