基于CA-FCM方法的飞机增雨效果检验及分析

doi:10.3969/j.issn.1673-503X.2020.02.010

Abstract

Abstract:

Using the data of aircraft precipitation enhancement (APE) from 2013 to 2017 in He'nan province, the rationality and applicability of CA-FCM method in the APE effect inspection was investigated, and the relationships between the relative precipitation enhancement rate (RPER) and season, the physical quantity of inspection, vertical integrated liquid water were analyzed.The result shows that the application of CA-FCM in APE effect inspection in He'nan province can obtain a quantitative and reasonable effect.The RPERs of most operations range from 0% to 40%, and few operations make rain reduced.The RPERs in spring, summer, and autumn are 20.8%, 22.4%, and -22.6%, respectively.The APE effects in spring and summer are obviously better than that in autumn, and the half of autumn APEs generate precipitation reduction effect, which is probably related to cloud condition.The cloud availabilities for APE in spring and summer are superior to that in autumn.The significance test result shows that 65% of APE effects are significant.The higher vertical integrated liquid water content is in the APE area, the more the RPERs increase significantly.In addition, the APE conducted under the conditions of pre-operation echo ranging from 30 to 50 dBz and the large scale operation cloud, easily achieves certain precipitation enhancement effect, while that with operation cloud echo of 20-30 dBz is easy to produce precipitation reduction effect.Besides, the maintenance or enhancement of echo intensity and the area plays a significant role in increasing the APE effect.

Key words: Cluster analysis, Relative precipitation enhancement rate, Vertical integrated liquid water content

CLC Number:

P481

Xiu-zhu SHA,Zhen-ping SHAO,Yan-hua LIU,Shan-hai WANG. Inspection and analysis of the effect of aircraft precipitation enhancement based on CA-FCM method[J]. Journal of Meteorology and Environment, 2020, 36(2): 78-84.

Figures/Tables 5

Table 1

Fig.1

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Table 2

References 20

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作业号	作业日期	作业时段	作业高度/m	风向/°	风速/(m·s^-1)	作业区域
1	2013-05-05	16:59-20:13	5000	237	4	南阳—三门峡—洛阳
2	2013-08-23	04:46-06:24	4000	70	10	洛阳—平顶山
3	2014-03-18	16:20-17:28	4000	248	17	郑州—焦作
4	2014-08-16	09:33-11:53	5000	224	8	洛阳—平顶山—南阳—驻马店
5	2014-08-16	15:05-18:06	5000	287	14	平顶山—南阳—洛阳—郑州
6	2014-08-23	09:39-12:01	5000	249	10	许昌—平顶山—漯河—南阳
7	2014-08-23	14:58-17:36	6500	263	10	平顶山—许昌—漯河—周口—驻马店
8	2014-08-26	15:21-17:36	5500	255	8	平顶山—许昌—漯河—南阳—驻马店
9	2014-08-30	09:37-12:08	5000	263	12	新乡—开封—周口—商丘
10	2014-08-30	15:00-17:51	6000	256	17	焦作—平顶山—洛阳
11	2014-09-01	13:13-15:35	5500	277	19	漯河—平顶山—南阳—驻马店
12	2014-11-24	10:25-11:36	4500	160	3	周口
13	2015-03-19	14:30-15:48	4000	265	16	郑州—焦作
14	2015-04-05	09:49-12:14	4000	237	12	洛阳—郑州
15	2015-05-10	15:23-17:31	6000	221	22	焦作—洛阳
16	2015-10-25	10:18-13:48	5500	248	9	鹤壁—安阳—新乡
17	2015-11-23	13:24-15:18	6000	260	13	洛阳—三门峡
18	2016-05-20	14:07-15:56	6000	192	2	许昌—周口—漯河—驻马店
19	2017-04-04	09:16-11:37	4000	230	12	平顶山
20	2017-04-04	15:04-17:42	4000	305	8	商丘—周口
21	2017-04-08	10:03-12:41	5000	315	7	焦作—洛阳
22	2017-04-10	09:15-11:56	4800	270	21	平顶山—南阳
23	2017-04-16	10:09-12:50	4500	230	10	漯河

作业号	作业季节	YY/m³	YE/m³	R/(%)	S_td	t	α	VIL/(kg·m^-2)
1	春季	107662523	76744883	40.28	2.09	3.29	＜0.05	5—10
2	夏季	5305110	6032066	-12.05	2.30	-0.55	＞0.05	0—1
3	春季	18089381	13086670	38.22	1.05	-0.45	＜0.05	10—15
4	夏季	30534420	23108059	32.13	3.74	2.75	＜0.05	0—1
5	夏季	30534420	23108059	32.13	3.74	2.75	＜0.05	1—5
6	夏季	93713555	69953414	33.96	2.45	-7.64	＜0.05	15—20
7	夏季	93713555	69953414	33.96	2.45	-7.64	＜0.05	15—20
8	夏季	66011188	58099035	13.62	1.38	2.77	＞0.05	1—5
9	夏季	312856531	277676688	12.66	2.58	-2.70	＜0.05	0—1
10	夏季	167983125	126185100	33.12	4.09	2.00	＜0.05	15—20
11	秋季	152567594	254438156	-40.03	3.11	-4.20	＜0.05	1—5
12	秋季	74903227	60911465	22.97	1.05	2.20	＜0.05	0—1
13	春季	19239840	11727601	64.05	0.86	2.15	＜0.05	5—10
14	春季	9004660	15388010	-41.48	1.53	-2.47	＜0.05	10—15
15	春季	31309621	22218180	40.91	1.87	2.87	＞0.05	0—1
16	秋季	89362852	194816688	-54.13	2.22	-7.63	＜0.05	1—5
17	秋季	161035281	106947125	50.57	1.54	2.51	＜0.05	1—5
18	春季	29577170	20356660	45.29	1.26	3.71	＜0.05	10—15
19	春季	138918656	113376648	22.52	2.15	3.88	＜0.05	5—10
20	春季	172685766	135080938	27.83	1.02	2.41	＜0.05	5—10
21	春季	28803551	26206498	9.91	0.71	0.87	＜0.05	1—5
22	春季	95001969	84833406	11.98	0.96	0.56	＞0.05	1—5
23	春季	134459656	130666133	2.90	0.85	0.96	＞0.05	0—1

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Inspection and analysis of the effect of aircraft precipitation enhancement based on CA-FCM method

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