基于风云静止卫星的飞机增雨云物理响应

doi:10.3969/j.issn.1673-503X.2023.05.010

Abstract

Abstract:

Based on the precipitation enhancement operation data of aircraft from 2016 to 2019 and inversion products of FY-2E/2G/4A meteorological geostationary satellite, using the method of determining the affected area of precipitation enhancement by HYSPLIT model and the analysis method of satellite inversion product and radar product, the response of cloud physical parameters of satellite inversion after precipitation enhancement seeding was analyzed, the cloud physical characteristics and evolution law after precipitation enhancement seeding were obtained, and the comprehensive application ability and benefits of meteorological satellites in the inspection and evaluation of artificial precipitation enhancement effect were improved.The result shows that: for most of the precipitation enhancement operations in the study, the four cloud physical parameters under the influence of natural variation and artificial seeding reach the maximum variations in 2~3 hours after the end of seeding.For the 9 aircraft precipitation enhancement operations, average variation ranges of cloud top temperature, cloud effective radius, optical thickness, liquid water path, and hourly precipitation in 3 hours after the end of seeding reach -1.44~2.09 ℃, -3.73~3.84 μm, -5.47~3.62, -112.59~61.12 mm, -0.06~0.27 mm, respectively.Cloud top temperature and hourly precipitation are increased, and cloud effective radius, optical thickness, and liquid water path are decreased for more than half of the precipitation enhancement operations, and precipitation for individual operations is reduced.For different cloud bodies, when the distribution of liquid water and the structure of the cloud system vary dramatically and are very uneven, the variations of cloud physics and precipitation induced by precipitation enhancement seeding will be significantly different.At present, for the precipitation variation induced by natural variation and artificial seeding, it's difficult to eliminate the influence of the two factors on precipitation variation scientifically and completely.

Key words: FY geostationary satellite, Precipitation enhancement seeding, Cloud physical response, Cloud effective radius

CLC Number:

P481

Xiuzhu SHA,Can SONG,Jianfang DING,Ronghao CHU,Shanhai WANG. Cloud physical response of aircraft precipitation enhancement based on FY geostationary satellite[J]. Journal of Meteorology and Environment, 2023, 39(5): 82-90.

Figures/Tables 7

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Table 3

References 29

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编号	作业日期	作业机型	催化时段	催化时长/h	催化平均高度/km	催化剂量			催化区域
编号	作业日期	作业机型	催化时段	催化时长/h	催化平均高度/km	AgI焰条/根	AgI焰弹/发	发烟管/根	催化区域
1	20160507	运8	16:17—17:20	1.1	5.6	15	193	0	洛阳—焦作—郑州
2	20170404	运12	09:45—11:26	1.7	3.8	13	0	0	平顶山—许昌
3	20170408	运12	10:39—11:42	1.1	4.5	13	0	0	洛阳—焦作
4	20170410	运12	09:45—11:21	1.6	4.5	13	0	0	洛阳—平顶山—南阳
5	20170924	MA60	14:02—17:10	3.1	5.3	20	180	0	南阳
6	20170925	MA60	11:57—14:59	3.0	6.2	18	194	0	南阳
7	20171001	MA60	11:10—12:00	0.8	6.2	26	191	0	南阳
8	20181105	MA60	14:55—17:25	2.5	4.3	0	0	37	洛阳—平顶山
9	20190226	MA60	15:15—16:50	1.6	4.2	18	0	0	南阳

探测方式	反演参数	定义	指导作用	单位
FY-2E/2G及FY-4A静止气象卫星	云顶温度(ttop)	云顶所在高度的温度	人工增雨云系播云温度窗的选择	℃
	云粒子有效半径(ref)	假设云层在垂直方向均匀条件下云粒子的有效半径	判断云中粒子大小，反映云可降水量	μm
	云光学厚度(optn)	云系在整个路径上云消光总和	了解云系垂直方向云体厚实程度	无量纲
	液水路径(lwp)	云体单位面积上的垂直方向液水总量(或称柱液水量)	了解垂直方向的云水丰沛程度	mm

作业序号	云顶温度/℃		云粒子有效半径/μm		光学厚度		液水路径/mm		小时降水量/mm
作业序号	催化初始	平均变化值	催化初始	平均变化值	催化初始	平均变化值	催化初始	平均变化值	催化初始	平均变化值
1	-36.45	0.23	28.09	0.07	11.48	3.27	249.87	56.97	0	0.01
2	-33.81	-1.44	25.31	-2.67	44.98	-3.13	916.01	-101.58	0.95	0.03
3	-25.23	-0.59	26.79	-2.54	50.67	-5.47	820.44	-112.59	0.4	-0.06
4	-27.71	0.68	22.93	-1.48	41.65	0.66	616.79	-24.03	0.63	0.02
5	-27.06	0.78	17.84	1.80	10.16	3.62	245.16	61.12	1.79	0.18
6	-28.51	1.88	26.46	-3.73	22.89	-3.15	427.44	-54.57	0.14	0.04
7	-24.91	0.43	11.79	-0.93	28.73	-0.64	272.9	-17.63	0.86	0.27
8	-21.86	-0.98	16.33	0.47	27.26	-0.82	335.34	-9.59	0.38	0.10
9	-16.94	2.09	4.48	3.84	15.06	-0.98	144.2	4.08	0.01	0.00

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Cloud physical response of aircraft precipitation enhancement based on FY geostationary satellite

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