To exploit cloud water resources to increase precipitation on the ground effectively,according to the principles of artificial precipitation enhancement,based on historical data of weather and precipitation from Fuxin...To exploit cloud water resources to increase precipitation on the ground effectively,according to the principles of artificial precipitation enhancement,based on historical data of weather and precipitation from Fuxin National Basic Meteorological Stations from 1981 to 2010,the distribution characteristics of cloud water resources,potential and countermeasures of artificial precipitation enhancement in Fuxin region of Liaoning Province were studied. The results show that the annual average quantity of cloud water resources in the air over Fuxin region over the past 30 years was 285. 6 × 10~8m^3,but the annual average precipitation was only 471.8 mm( amounting to 47.2 ×10~8m^3 of water resources),accounting for only16. 5% of total quantity of cloud water resources in the air; 12 times of artificial precipitation enhancement operation experiments were carried out by using the weather models and technical indicators suitable for artificial precipitation enhancement in Fuxin region,and the artificial precipitation efficiency was 18. 3% on average,5. 2% higher than before,and the annual average precipitation could increase by 2. 5 × 10~8m^3 approximately. All of these have great significance for implementing artificial precipitation enhancement operation scientifically and effectively,maximizing the exploitation of cloud water resources in the air,increasing total quantity of water resources,and mitigating drought in Fuxin region.展开更多
利用1981~2022年阜新近42年气象资料,分析了春播关键期耕作层土壤墒情变化特征,结果表明:近42年阜新春播关键期耕作层土壤墒情总体呈现下降趋势,气候倾向率为-0.3/10年。土壤墒情存在两个干湿变化周期,其中36~45年为主周期,12~14年为次...利用1981~2022年阜新近42年气象资料,分析了春播关键期耕作层土壤墒情变化特征,结果表明:近42年阜新春播关键期耕作层土壤墒情总体呈现下降趋势,气候倾向率为-0.3/10年。土壤墒情存在两个干湿变化周期,其中36~45年为主周期,12~14年为次周期,1999年发生了突变,突变后呈明显的下降趋势。阜新春播关键期土壤墒情与前一年9~11月2 min平均风速呈负相关,与空气相对湿度呈正相关,均通过了0.01的显著性检验。采用多元回归方法构建的春播关键期耕作层土壤墒情预测方程为Y=3.881ln x 1-1.873 x 2-1.559,通过了0.01显著性检验,有一定的实用价值。展开更多
基金Supported by Science and Technology Planning Project for social development in Fuxin City of Liaoning Province(20151305)
文摘To exploit cloud water resources to increase precipitation on the ground effectively,according to the principles of artificial precipitation enhancement,based on historical data of weather and precipitation from Fuxin National Basic Meteorological Stations from 1981 to 2010,the distribution characteristics of cloud water resources,potential and countermeasures of artificial precipitation enhancement in Fuxin region of Liaoning Province were studied. The results show that the annual average quantity of cloud water resources in the air over Fuxin region over the past 30 years was 285. 6 × 10~8m^3,but the annual average precipitation was only 471.8 mm( amounting to 47.2 ×10~8m^3 of water resources),accounting for only16. 5% of total quantity of cloud water resources in the air; 12 times of artificial precipitation enhancement operation experiments were carried out by using the weather models and technical indicators suitable for artificial precipitation enhancement in Fuxin region,and the artificial precipitation efficiency was 18. 3% on average,5. 2% higher than before,and the annual average precipitation could increase by 2. 5 × 10~8m^3 approximately. All of these have great significance for implementing artificial precipitation enhancement operation scientifically and effectively,maximizing the exploitation of cloud water resources in the air,increasing total quantity of water resources,and mitigating drought in Fuxin region.
文摘利用1981~2022年阜新近42年气象资料,分析了春播关键期耕作层土壤墒情变化特征,结果表明:近42年阜新春播关键期耕作层土壤墒情总体呈现下降趋势,气候倾向率为-0.3/10年。土壤墒情存在两个干湿变化周期,其中36~45年为主周期,12~14年为次周期,1999年发生了突变,突变后呈明显的下降趋势。阜新春播关键期土壤墒情与前一年9~11月2 min平均风速呈负相关,与空气相对湿度呈正相关,均通过了0.01的显著性检验。采用多元回归方法构建的春播关键期耕作层土壤墒情预测方程为Y=3.881ln x 1-1.873 x 2-1.559,通过了0.01显著性检验,有一定的实用价值。
