风云三号气象卫星掩星大气产品精度的初步检验

廖蜜; 张鹏; 毕研盟; 杨光林

doi:10.11676/qxxb2015.072

风云三号气象卫星掩星大气产品精度的初步检验

doi: 10.11676/qxxb2015.072

廖蜜^1,2,3,
张鹏³,
毕研盟^3,,
杨光林^3,4

1.
南京信息工程大学, 南京, 210044
2.
中国气象科学研究院, 北京, 100081
3.
国家卫星气象中心, 北京, 100081
4.
中国科学院空间科学应用中心, 北京, 100190

计量
- 文章访问数: 2381
- HTML全文浏览量: 6
- PDF下载量: 2143
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-11
- 修回日期: 2015-06-18
- 刊出日期: 2016-01-06

A preliminary estimation of the radio occultation products accuracy from the Fengyun-3C meteorological satellite

1.
Nanjing University of Information Science & Technology, Nanjing 210044, China
2.
Chinese Academy of Meteorological Sciences, Beijing 100081, China
3.
National Satellite Meteorological Center, Beijing 100081, China
4.
Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China

摘要

摘要: 风云三号气象卫星C星于北京时间2013年9月23日成功发射,其上搭载了中国第一个以掩星方式探测中性大气和电离层大气的民用新型有效载荷——全球导航卫星掩星探测仪(Global Navigation Satellite System Occultation Sounder, GNOS)。GNOS可以接收GPS(Global Positioning System)导航卫星和中国北斗导航卫星信号,进而得到全球范围内的中性大气和电离层大气的探测结果。利用常规无线电探空资料,对GNOS接收GPS信号的掩星探测大气产品(包括折射率、密度、温度以及湿度廓线)进行检验,结果表明:在近地面至25 km垂直范围内,GNOS掩星大气产品折射率廓线和干大气密度廓线的平均偏差在0.5%左右,标准偏差在2%左右;温度廓线的平均偏差约为0.5 K,标准偏差约为2 K;水汽廓线的标准偏差在6 km 以下为0.25—1.0 g/kg。对于风云卫星首次尝试的掩星观测技术,GNOS掩星产品的精度基本达到预定目标,在未来还有改进的空间。
- 风云气象卫星 /
- 全球导航卫星掩星探测仪 /
- 掩星 /
- 产品精度检验
Abstract: The new meteorological satellite named Fengyun-3C was launched on 23 September 2013, which loaded the Global Navigation Satellite System Occultation Sounder (GNOS). GNOS can be used to sound the neutral atmosphere and ionosphere, providing the profiles of the refractivity, density, temperature and humidity. Before the GNOS products are used, it is necessary to assess their accuracy. When compared with the collocated measurements of radio sonde, the bias and the standard deviation of the GNOS refractivity are about 0.25% and 2%,respectively,from the near surface to 25 km; while the temperature bias and standard deviation are 0.5 K and 2 K, respectively. As for the specific humidity, the standard deviation is about 0.25-1.0 g/kg below 6 km. The validation shows that GNOS can basically meet the design requirement, which indicates an important improvement to the first trial of the Fengyun satellite in the radio occultation sounding area.
- Fengyun meteoroligical satellite /
- GNOS /
- Radio occultation /
- Products precision evaluation

HTML全文

参考文献(32)

毕研盟, 廖蜜, 张鹏等. 2013. 应用一维变分方法反演GPS掩星大气温湿廓线. 物理学报, 62(15): 159301-1-7. Bi Y M, Liao M, Zhang P. 2013. 1DVAR retrieval method for GPS radio occultation measurements of atmospheric temperature and humidity profiles. Acta Phys Sinica,62(15): 159301-1-7 (in Chinese)

杜明斌, 杨引明, 丁金才. 2009. COSMIC 反演精度和有关特性的检验. 应用气象学报, 20(5): 586-593. Du M B, Yang Y M, Ding J C. 2009. Evaluation for retrieving precision and some merits of COSMIC data. J Appl MeteorSci, 20(5): 586-593 (in Chinese)

杜晓勇, 毛节泰. 2008. GPS-LEO 掩星探测现状和展望. 高原气象, 27(4): 918-931. Du X Y, Mao J T. 2008. Status and outlook of LEO-GPS occultation sounding. Plateau Meteor, 27(4): 918-931 (in Chinese)

管成功, 陈起英, 佟华等. 2008. T639L60全球中期预报系统预报试验和性能评估. 气象, 34(6): 11-16. Guan C G, Chen Q Y, Tong H,et al. 2008. Experiments and evaluations of global medium range forecast system of T639L60. Meteor Moｎ,34(6): 11-16 (in Chinese)

苟小平, 符养, 郭粤宁等. 2009. COSMIC计划及掩星数据误差分析. 气象科学, 29(3): 348-354. Gou X P, Fu Y, Guo Y N,et al. 2009. COSMIC mission and error analysis of GPS radio occultation data. Scientia Meteor Sinica,29(3): 348-354 (in Chinese)

胡雄, 曾桢, 张训械等. 2005. 大气GPS掩星观测反演方法. 地球物理学报, 48(4): 768-774. Hu X, Zeng Z, Zhang X X,et al. 2005. Atmospheric inversion methods of GPS radio occultation. Chinese J Geophys, 48(4): 768-774 (in Chinese)

徐菊艳, 王盘兴, 吴洪宝. 2008. 两种再分析资料平流层温度场的对比分析. 南京气象学院学报, 31(3): 429-435. Xu J Y, Wang P X, Wu H B. 2008. Comparison of stratospheric temperature between ECMWF and NCEP reanalyses. J Nanjing Inst Meteor,31(3): 429-435 (in Chinese)

Anthes R A, Rocken C, Kuo Y H. 2000. Applications of COSMIC to meteorology and climate. Terr Atmos Oceanic Sci, 11(1): 115-156

Anthes R A, Ector D, Hunt D C,et al. 2008. The COSMIC/FORMOSAT-3 mission: Early results. Bull Amer Meteor Soc, 89(3):313-333

Ao C O, Meehan T K, Hajj G A, et al. 2003. Lowertroposphere refractivity bias in GPS occultation retrievals. J Geophys Res, 48(D18): 4577

Ao C O, Mannucci A J, Kursinski E R. 2012. Improving GPS radio occultation stratospheric refractivity retrievals for climate benchmarking. Geophys Res Lett, 39(12): L12701

Bi Y M, Yang Z D,Zhang P, et al. 2012. An introduction to China FY3 radio occultation mission and its measurement simulation. Adv Space Res,49(7):1191-1197,doi: 10.1016/j.asr.2012.01.014

Fishbach F F. 1965. A satellite method for temperature and pressure below 24 km. Bull Amer Meteor Soc, 9:528-532

GRAS SAF Validation Report: GRM-01: Near Real Time Refractivity Profile (NRP). V1. 3 (2009), SAF/GRAS/DMI/ RQ/REP/001

Hardy K R, Hajj G A,Kursinski E R. 1994. Accuracies of atmospheric profiles obtained from GPS occultations. Int J Satell Commun, 12(5): 463-473.

Kuo Y H, Sokolovskiy S, Anthes R,et al. 2000. Assimilation of GPS radio occultation data for numerical weather prediction. Special Issue Terr Atmos Ocean Sci,11(1): 157-186

Kuo Y H, Schreiner W S,Wang J,et al. 2005. Comparison of GPS radio occultation soundings with radiosondes. Geophys Res Lett 32:L05817, doi: 10.1029/2004GL021443

Kursinski E R, Hajj G A,Bertiger WI,et al. 1996. Initial results of radio occultation observations of earth's atmosphere using the global positioning system. Science, 271(52): 1107-1110

Kursinski E R, Hajj G A, Schofield J T, et al. 1997. Observing earth's atmosphere with radio occultation measurements using the Global Positioning System. J Geophys Res, 102(D19): 23429-23465

Lusignan B, Modrell G, Morrison A, et al. 1969. Sensing the Earth's atmosphere with occultation satellites. Proc IEEE,4:458-467

Poli P, Joiner J, Kursinski E R. 2002. 1DVAR analysis of temperature and humidity using GPS radio occultation refractivity data. J Geophys Res, 107(D20):ACL14-1-20

Poli P, Ao C O, de la Torre Juárez M, et al. 2003. Evaluation of CHAMP radio occultation refractivity using data assimilation office analyses and radiosondes. Geophys Res Lett, 30(15): 1800

Rocken C, Anthes R, Exner M,et al. 1997. Analysis and validation of GPS/MET data in the neutral atmosphere. J Geophys Res, 102(D25):29849-29866

Rocken C, Kuo Y H, Schreiner W, et al. 2000.COSMIC system description. Terr Atmos Oceanic Sci, 11(1):21-52

Schreiner W, Rocken C, Sokolovskiy S, et al. 2007. Estimates of the precision of GPS radio occultations from the COSMIC/FORMOSAT-3 mission. Geophys Res Lett, 34(4):L04808

Sokolovskiy SV. 2003. Effect of superrefraction on inversions of radio occultation signals in the lower troposphere. Radio Sci, 38(3):1058

Staten P W, Reichler T. 2009. Apparent precision of GPS radio occultation temperatures. Geophys Res Lett, 36(24):L24806

Ware R, Rocken C, Solheim F,et al. 1996. GPS sounding of the atmosphere from low earth orbit: Preliminary results. Bull Amer Meteor Soc, 77(1): 19-40

Yunck T P, Lindal G F, Liu C H. 1988. The role of GPS in precise earth observation//1988Navigation into the 21st Century,IEEE PLANS'88,Position Location and Navigation Symposium.Orlando:IEEE, 1988: 251-258

Yunck T P, LiuC H, WareR. 2000. A history of GPS sounding. Atmos Oceanic Sci, 11(1): 1-20

Zou X, Vandenberghe F, Wang B, et al. 1999. A ray-tracing operator and its adjoint for the use of GPS/MET refraction angle measurements. J Geophys Res, 104(D18): 22301-22318

Zou X,ZengZ. 2006. A quality control procedure for GPS radio occultation data. J Geophys Res, 111(D2): D02112

施引文献

资源附件(0)

访问统计