An Observing System Simulation Experiment with a Constellation of Radio Occultation Satellites

被引:13
作者
Cucurull, L. [1 ]
Atlas, R. [1 ]
Li, R. [2 ,3 ]
Mueller, M. J. [2 ,3 ]
Hoffman, R. N. [1 ,4 ]
机构
[1] NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA
[2] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
[3] NOAA, OAR, ESRL, Global Syst Div, Boulder, CO USA
[4] Univ Miami, Cooperat Inst Marine & Atmospher Studies, Miami, FL USA
关键词
Global positioning systems (GPS); Occultation; Remote sensing; Satellite observations; Sensitivity studies; OSSE SYSTEM; ASSIMILATION; IMPACT; VALIDATION; BIAS; MISSION;
D O I
10.1175/MWR-D-18-0089.1
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Experiments with a global observing system simulation experiment (OSSE) system based on the recent 7-km-resolution NASA nature run (G5NR) were conducted to determine the potential value of proposed Global Navigation Satellite System (GNSS) radio occultation (RO) constellations in current operational numerical weather prediction systems. The RO observations were simulated with the geographic sampling expected from the original planned Constellation Observing System for Meteorology, Ionosphere, and Climate-2 (COSMIC-2) system, with six equatorial (total of 6000 soundings per day) and six polar (total of 6000 soundings per day) receiver satellites. The experiments also accounted for the expected improved vertical coverage provided by the Jet Propulsion Laboratory RO receivers on board COSMIC-2. Except that RO observations were simulated and assimilated as refractivities, the 2015 version of the NCEP's operational data assimilation system was used to run the OSSEs. The OSSEs quantified the impact of RO observations on global weather analyses and forecasts and the impact of adding explicit errors to the simulation of perfect RO profiles. The inclusion or exclusion of explicit errors had small, statistically insignificant impacts on results. The impact of RO observations was found to increase the length of the useful forecasts. In experiments with explicit errors, these increases were found to be 0.6 h in the Northern Hemisphere extratropics (a 0.4% improvement), 5.9 h in the Southern Hemisphere extratropics (a significant 4.0% improvement), and 12.1 h in the tropics (a very substantial 28.4% improvement).
引用
收藏
页码:4247 / 4259
页数:13
相关论文
共 35 条
[1]   Assimilation of GPS radio occultation data at DWD [J].
Anlauf, H. ;
Pingel, D. ;
Rhodin, A. .
ATMOSPHERIC MEASUREMENT TECHNIQUES, 2011, 4 (06) :1105-1113
[2]   The COSMIC/FORMOSAT-3 Mission: Early Results [J].
Anthes, R. A. ;
Bernhardt, P. A. ;
Chen, Y. ;
Cucurull, L. ;
Dymond, K. F. ;
Ector, D. ;
Healy, S. B. ;
Ho, S. -P. ;
Hunt, D. C. ;
Kuo, Y. -H. ;
Liu, H. ;
Manning, K. ;
Mccormick, C. ;
Meehan, T. K. ;
Randel, W. J. ;
Rocken, C. ;
Schreiner, W. S. ;
Sokolovskiy, S. V. ;
Syndergaard, S. ;
Thompson, D. C. ;
Trenberth, K. E. ;
Wee, T. -K. ;
Yen, N. L. ;
Zeng, Z. .
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, 2008, 89 (03) :313-333
[3]   Impact of the assimilation of CHAMP refractivity profiles on environment Canada global forecasts [J].
Aparicio, Josep M. ;
Deblonde, Godelieve .
MONTHLY WEATHER REVIEW, 2008, 136 (01) :257-275
[4]   IMPACT OF SATELLITE TEMPERATURE SOUNDING AND WIND DATA ON NUMERICAL WEATHER PREDICTION [J].
ATLAS, R ;
KALNAY, E ;
HALEM, M .
OPTICAL ENGINEERING, 1985, 24 (02) :341-346
[5]   Atmospheric observations and experiments to assess their usefulness in data assimilation [J].
Atlas, R .
JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN, 1997, 75 (1B) :111-130
[6]   Observing System Simulation Experiments to Assess the Potential Impact of New Observing Systems on Hurricane Forecasting [J].
Atlas, Robert ;
Bucci, Lisa ;
Annane, Bachir ;
Hoffman, Ross ;
Murillo, Shirley .
MARINE TECHNOLOGY SOCIETY JOURNAL, 2015, 49 (06) :140-148
[7]   Observing System Simulation Experiments (OSSEs) to Evaluate the Potential Impact of an Optical Autocovariance Wind Lidar (OAWL) on Numerical Weather Prediction [J].
Atlas, Robert ;
Hoffman, Ross N. ;
Ma, Zaizhong ;
Emmitt, G. David ;
Wood, Sidney A., Jr. ;
Greco, Steven ;
Tucker, Sara ;
Bucci, Lisa ;
Annane, Bachir ;
Hardesty, R. Michael ;
Murillo, Shirley .
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY, 2015, 32 (09) :1593-1613
[8]   GNSS Radio Occultation Constellation Observing System Experiments [J].
Bauer, Peter ;
Radnoti, Gabor ;
Healy, Sean ;
Cardinali, Carla .
MONTHLY WEATHER REVIEW, 2014, 142 (02) :555-572
[9]   On some aspects of the impact of GPSRO observations in global numerical weather prediction [J].
Bonavita, Massimo .
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 2014, 140 (685) :2546-2562
[10]   Community Global Observing System Simulation Experiment (OSSE) Package (CGOP): Assessment and Validation of the OSSE System Using an OSSE-OSE Intercomparison of Summary Assessment Metrics [J].
Boukabara, Sid-Ahmed ;
Ide, Kayo ;
Zhou, Yan ;
Shahroudi, Narges ;
Hoffman, Ross N. ;
Garrett, Kevin ;
Kumar, V. Krishna ;
Zhu, Tong ;
Atlas, Robert .
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY, 2018, 35 (10) :2061-2078