Performance Tests and Outdoor Comparison Observations of Domestic Remade ECC Ozonesondes

Zheng Xiangdong; Xuan Yuejian; Lin Weili; Tang Jie; Tian Hongmin; Zhang Jinqiang; Xing Yi

doi:10.11898/1001-7313.20180407

Vol.29, NO.4, 2018

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Article Navigation > Journal of Applied Meteorological Science > 2018 > 29(4): 460-473

Zheng Xiangdong, Xuan Yuejian, Lin Weili, et al. Performance tests and outdoor comparison observations of domestic remade ECC ozonesondes. J Appl Meteor Sci, 2018, 29(4): 460-473. DOI: 10.11898/1001-7313.20180407.

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Zheng Xiangdong, Xuan Yuejian, Lin Weili, et al. Performance tests and outdoor comparison observations of domestic remade ECC ozonesondes. J Appl Meteor Sci, 2018, 29(4): 460-473. DOI: 10.11898/1001-7313.20180407.

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Performance Tests and Outdoor Comparison Observations of Domestic Remade ECC Ozonesondes

DOI: 10.11898/1001-7313.20180407

1.
Chinese Academy of Meteorological Sciences, Beijing 100081
2.
Institute of Atmospheric Physics, CAS, Beijing 100029
3.
Meteorological Observation Center, CMA, Beijing 100081
4.
College of Life and Environmental Sciences, Minzu University of China, Beijing 100081
5.
Chengdu University of Technology and Information, Chengdu 610225

Received Date: 2017-10-13
Rev Recd Date: 2018-03-09
Publish Date: 2018-07-31

Abstract

Abstract

The electrochemical concentration cell (ECC) type ozone sonde, developed by Institute of Atmospheric Physics(IAP), Chinese Academy of Sciences(CAS) is tested through indoor basic examinations and outdoor flying comparison observations with imported ECC ozonesondes. Indoor tests for IAP ozone sonde include the sonde background current (I_bg), the response time and the influences of SO₂ and NO₂ on ozone measurements, and the low pressure pump efficiency (C_ef). Results show that I_bg is less than 0.1 μA and it decreases with the growth of altitude. The response time is 21-26 s. Ozone concentration is much underestimated/overestimated as SO₂/NO₂ gas is input to the ozone sonde. C_ef is about 1.0 as the atmospheric pressure is more than 100 hPa while it rises with the decrease of atmospheric pressure, reaching 1.17 ±0.10-1.28 ±0.16 as the pressure is 10 to 5 hPa. C_ef of IAP ozonesonde is higher than that of imported products with the value of about 1.055. Outdoor comparison observation shows that IAP and imported ozonesonde have good compatibility in the radiosonde platform and sampling pumps. The ozone vertical profiles from each sonde show generally consistent with each other. The ratio of total ozone measured by IAP ozonesonde to that from Brewer observations is 0.9-1.1. Ozone concentration difference is effectively reduced in the lower stratosphere when C_ef and I_bg of IAP ozonesonde is used. Applications of C_ef and I_bg of IAP ozonesonde contributed to 15 DU and 4-6 DU column ozone. The mean absolute difference of tropospheric ozone partial pressure are stable and its values are less than 0.5 mPa, and the stratospheric difference doesn't exceed 1.0 mPa, although the impact from the pump on IAP ozonesonde is obvious. An international low-pressure environment simulation cabin comparison test is necessary for IAP ozonesonde. The stability of C_ef of this radiosonde system should be improved, and it suggests that filtering algorism should be added to data depressing (including meteorology and ozone processing) to decrease data oscillations.
- IAP ozonesonde;
- correction of C_ef;
- comparison observations

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References(29)

Figures and Tables

Fig. 1 Variations of IAP and ENSCI-2Z ECC ozonesonde I_bg with the atmospheric pressure

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Fig. 2 Influences of NO₂(a) and SO₂(b) on measurements of IAP ozonesonde

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图 3 IAP O₃探空仪的C_ef测量结果(a)个例，(b)多次测值结果统计，(c)与进口仪器测值的比较

(Harder1987及Deshler的数据均来自文献[6])

Fig. 3 C_ef of IAP ozonesondes(a)individual case, (b)statistical results of multiple measurements, (c)comparison with those of imported ozonesondes

(data of Harder1987 and Deshler are from reference [6])

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Fig. 4 Comparisons of ozone concentration measured by IAP ozonesonde and TE49i

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Fig. 5 Measurements of IAP and imported ozonesonde operated by same type of imported pumps (the left is ozone partial pressure profile, the right is absolute difference profile) (a)on 26 Mar 2013, (b)on 2 Apr 2013, (c)on 23 Apr 2013

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Fig. 6 Measurements of IAP and imported ozonesonde operated by same type of RS92 radiosonde platform (the left is ozone partial pressure profile, the right is absolute difference profile) (a)on 13 Mar 2013, (b)on 14 Mar 2013, (c)on 15 Mar 2013

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Fig. 7 Measurements of domestic and imported ozonesonde operated by completely different pumps and radiosonde platform(the left are the ozone partial pressure profiles, the right is absolute difference profiles) (a)on 15 Jan 2013, (b)on 22 Jan 2013

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Table 1 Response time(τ) of IAP and ENSCI-2Z ECC ozonesondes(unit:s)

O₃浓度/10^-9	浓度增大方向			浓度减小方向
O₃浓度/10^-9	IAP#1	IAP#2	ENSCI-2Z	IAP#1	IAP#2	ENSCI-2Z
200	25.7	27.7	34.1	21.2	21.1	20.0
150	23.3	24.0	26.2	20.9	21.3	20.0
100	23.1	24.5	26.1	20.3	21.4	19.6
50	23.2	23.8	29.9	21.2	20.3	20.9
15	25.3	27.3	43.7	21.0	21.4	20.7
平均	24.1	25.5	32.0	20.9	21.1	20.3

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Table 2 Comparison observations of IAP and ENSCI-2Z/SPC-6A ozonesondes in Beijing in 2013

日期	O₃探空仪类型	气象探空平台	探空积分总量/DU			Brewer/DU	备注
日期	O₃探空仪类型	气象探空平台	原始数据	C_ef订正	C_ef及I_bg订正	Brewer/DU	备注
2013-01-15	IAP	国产	321	327±10^①	331	317
2013-01-15	ENSCI-2Z	RS92			317	317
2013-01-22	IAP	国产	376	391±15^①	395	388	相同保温盒
2013-01-22	ENSCI-2Z	RS92			371	388	相同保温盒
2013-03-11	IAP	RS92	302^②		312±10^③	332
2013-03-11	ENSCI-2Z	RS92			332	332
2013-03-13	IAP	RS92	326^②		340±13^③	336
2013-03-13	SPC-6A	RS92			337	336
2013-03-14	IAP	RS92	318^②		333±13^③	343
2013-03-14	SPC-6A	RS92			330	343
2013-03-15	IAP	RS92	272^②		284±11^③	311
2013-03-15	SPC-6A	RS92			311	311
2013-03-18	IAP	RS92	382^②		397±15^③	429	0.5%KI溶液
2013-03-18	ENSCI	RS92			431	429	0.5%KI溶液
2013-03-26	IAP	国产	346	351±1.8^④	352	350	ENSCI-2Z泵
2013-03-26	ENSCI-2Z	国产	338	353±1.8^④	356	350	ENSCI-2Z泵
2013-04-02	IAP	国产	267	270±1.3^④	271	315	ENSCI-2Z泵
2013-04-02	ENSCI-2z	国产	273	276±1.3^④	278	315	ENSCI-2Z泵
2014-04-23	IAP#1	国产	392	399±2.7^④	402	402	ENSCI-2Z泵
	IAP#2	国产					10 km无信号
	SPC-6A	RS92			398
注：①图 3b所示C_ef值订正O₃廓线，②由于Vaisala92原始数据未提供化学反应池电流值，该积分总量已含I_bg订正，③图 3b所示C_ef值和SPC-6A探空I_bg处理方式订正O₃廓线，④图 3c中ENSCI-2Z的C_ef值订正O₃廓线。

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Table 3 The ozone partial pressure absolute difference measured by IAP and imported ozonesondes under various situations(unit:mPa)

高度范围	比对类型	原始廓线	C_ef订正	I_bg订正	C_ef及I_bg共同订正
地面~2 km	Ⅰ(n=2)	-0.08±0.25	-0.08±0.25	-0.07±0.25	-0.07±0.25
	Ⅱ(n=1)	-0.57±0.33	-0.57±0.33	-0.56±0.32	-0.56±0.32
	Ⅲ(n=5)	0.14±0.51			0.14±0.51
	Ⅳ(n=2)	0.51±1.25	0.50±1.25	0.54±1.24	0.53±1.24
2.1~10 km	Ⅰ	-0.3±0.14	-0.3±0.14	-0.27±0.14	-0.26±0.14
	Ⅱ	-0.4±0.21	-0.4±0.21	-0.38±0.21	-0.37±0.21
	Ⅲ	-0.04±0.27			-0.08±0.27
	Ⅳ	0.05±0.32	0.02±0.32	0.15±0.32	0.12±0.32
10.1~25 km	Ⅰ	-0.49±0.55	-0.37±0.49	0.45±0.55	-0.3±0.49
	Ⅱ	-0.10±0.40	0.27±0.5	0.14±0.4	0.31±0.50
	Ⅲ	-0.57±0.33			-0.57±0.33
	Ⅳ	0.35±0.58	0.65±0.57	0.46±0.58	0.76±0.57
25 km以上	Ⅰ	0.13±0.67	0.48±0.74	0.17±0.68	0.52±0.74
	Ⅱ	-0.37±1.16	0.03±1.22	-0.33±1.17	0.07±1.23
	Ⅲ	-1.18±0.80			-0.24±0.86
	Ⅳ	-0.61±0.48	0.56±0.48	-0.49±0.48	0.58±0.48
廓线平均	Ⅰ	-0.32±0.54	-0.21±0.54	-0.17±0.54	0.17±0.54
	Ⅱ	-0.19±0.71	-0.01±0.77	-0.15±0.71	0.28±0.78
	Ⅲ	-0.68±0.81			-0.34±0.69
	Ⅳ	0.14±0.68	0.43±0.64	0.24±0.67	0.54±0.64
注：Ⅰ表示抽气泵和气象探空相同(2013年3月26日和4月2日)，Ⅱ表示相同抽气泵和不同气象探空(2013年4月23日)，Ⅲ表示相同气象探空平台(2013年3月11—18日)，Ⅳ表示不同系统(2013年1月15日和22日)。

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