Analysis of the Summer Climate Characteristics of Anqiu City in 2024

根据安丘市国家基本气象站及辖域内区域站2024年夏季降水、气温、日照、湿度及风等气象观测要素实况，统计分析比较各要素变化特征。结果表明：安丘市2024年夏季总降水量574.6 mm，较常年同期偏多173.9 mm，累计量居历史同期第10位，总体降水特点是前期降水明显偏少，中期降水明显偏多，出现旱涝急转态势；夏季降水日数共28 d，6月和8月降水日数较常年偏少，7月降水日数14 d，较常年同期偏多，与7月降水量明显偏多相匹配；安丘国家基本气象站夏季一日最大降水量60.7 mm，最长连续降水日数4 d，集中在7月4~7日且期间出现2次暴雨，最长连续无降水日数7 d，出现在7月底到8月初；安丘国家基本气象站夏季日降水量 ≥ 50.0 mm日数5 d，呈现暴雨日数偏多的特征。安丘市2024年夏季平均气温27.4℃，较常年同期偏高2.2℃，整个夏季各旬平均气温除7月上旬较常年偏低外，其余各旬平均气温较常年均明显偏高，尤其是整个8月处于持续偏高的状态；夏季高温日数26 d，6月、8月极端最高气温均突破历年同期极值，均未突破历史同期极值。安丘市2024年夏季日照时数654.4 h，较常年同期偏多59.0 h；日照百分率51%，晴天日数43 d、阴天日数20 d。2024年夏季平均相对湿度为76%，与常年同期持平。安丘市2024年夏季平均风速2.0 m/s，较常年同期偏小0.3 m/s，整个夏季无大风出现，主导风向SE。结论：安丘市2024年夏季降水量较常年明显偏多，平均气温较常年明显偏，日照时数较常年偏多，相对湿度与常年持平，平均风速较常年偏小；6月份高温少雨出现旱情，7~8月份降水时空分布不均且强降水次数偏多，6月上、中旬和8月份平均气温偏高明显，夏季光照充足，农业气象条件属一般偏好年份。According to the actual situation of meteorological observation elements such as precipitation, temperature, sunshine, humidity and wind in the summer of 2024 in Anqiu National Basic Meteorological Station and regional stations within its jurisdiction, the change characteristics of each element were statistically analyzed and compared. The results show that the total precipitation of Anqiu City in the summer of 2024 is 574.6 mm, which is 173.9 mm more than the same period of normal years, and the cumulative amount ranks 10th in the same period of history. The overall precipitation characteristics are that the precipitation in the early stage is obviously less, and the precipitation in the middle stage is obviously more, resulting in a sharp turn of drought and flood. The total number of precipitation days in summer is 28 d, and the number of precipitation days in June and August is less than normal. The number of precipitation days in July is 14 d, which is more than normal, which matches the obvious increase of precipitation in July. The maximum precipitation of Anqiu National Basic Meteorological Station in summer is 60.7 mm, and the longest continuous precipitation days are 4 days, which are concentrated on July 4~7 and there are two rainstorms during the period, and the longest continuous non-precipitation days are 7 days, which appear from the end of July to the beginning of August. The daily precipitation of Anqiu National Basic Meteorological Station in summer is ≥ 50.0 mm for 5 days, showing the characteristics of more rainstorm days. The average temperature of Anqiu City in summer in 2024 was 27.4℃, which was 2.2℃ higher than normal. The average temperature of all ten days in summer was significantly higher than normal except in early July, especially in August. The number of high temperature days in summer is 26 d, and the extreme maximum temperature in June and August all exceeded the historical extreme value in the same period, but none of them exceeded the historical extreme value in the same period. The sunshine hours in Anqiu City in summer of 2024 were 654.4 h, 59.0 h more than the same period of normal years. Sunshine percentage is 51%, sunny days are 43 d, cloudy days are 20 d. In the summer of 2024, the average relative humidity was 76%, which was the same as normal. The average wind speed in Anqiu City in the summer of 2024 is 2.0 m/s, which is 0.3 m/s smaller than that in the same period of normal years. There is no strong wind in the whole summer, and the dominant wind direction is SE. Conclusion: The summer precipitation in Anqiu City in 2024 is obviously more than normal, the average temperature is obviously more than normal, the sunshine hours are more than normal, the relative humidity is the same as normal, and the average wind speed is smaller than normal. In June, there was drought due to high temperature and little rainfall, and in July~August, the precipitation was unevenly distributed in time and space, and there were more heavy precipitation times. The average temperature in the first, middle and August of June was obviously higher, and there was sufficient sunshine in summer, so agro-meteorological conditions were generally preferred years.