A refractive index mapping operator for assimilation of occultation data

Monthly Weather Review

Volumn 133, Issue 9, 2005, Pages 2650-2668

  Syndergaard, Stig ^a,b   Kursinski, E Robert ^a   Herman, Benjamin M ^a   Lane, Emily M ^a,c   Flittner, David E ^a,d  

^a UNIVERSITY OF ARIZONA   (United States)

^b UNIVERSITY CORPORATION FOR ATMOSPHERIC RESEARCH   (United States)

^c UNIVERSITY OF CALIFORNIA   (United States)

^d NASA LANGLEY RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTER SIMULATION; GLOBAL POSITIONING SYSTEM; MATHEMATICAL MODELS; RAY TRACING; REFRACTIVE INDEX; REMOTE SENSING; WEATHER FORECASTING;

GPS RADIO OCCULTATION EVENTS; NUMERICAL WEATHER PREDICTION (NWP) MODEL; REFRACTIVE INDEX MAPPING OPERATOR;

ATMOSPHERIC OPTICS;

DATA ASSIMILATION; WEATHER FORECASTING;

EID: 27144493444     PISSN: 00270644     EISSN: None     Source Type: Journal    
DOI: 10.1175/MWR3001.1     Document Type: Article

References (69)

1. Ahmad, B., 1998: Accuracy and resolution of atmospheric profiles obtained from radio occultation measurements. Ph.D. thesis, Center for Radar Astronomy, Stanford University, 123 pp.
2. Ahmad, B., and G. L. Tyler, 1998: The two-dimensional resolution kernel associated with retrieval of ionospheric and atmospheric refractivity profiles by Abelian inversion of radio occultation phase data. Radio Sci., 33, 129-142.
3. Anthes, R. A., C. Rocken, and Y.-H. Kuo, 2000: Applications of COSMIC to meteorology and climate. Terr. Atmos. Oceanic Sci., 11, 115-156.
4. Ao, C. O., T. K. Meehan, G. A. Hajj, A. J. Mannucci, and G. Beyerle, 2003: Lower troposphere refractivity bias in GPS occultation retrievals. J. Geophys. Res., 108, 4577, doi:10.1029/2002JD003216.
5. Barker, D. M., W. Huang, Y.-R. Guo, A. J. Bourgeois, and Q. N. Xiao, 2004: A three-dimensional variational data assimilation system for MM5: Implementation and initial results. Mon. Wea. Rev., 132, 897-914.
6. Beyerle, G., M. E. Gurbunov, and C. O. Ao, 2003: Simulation studies of GPS radio occultation measurements. Radio Sci., 38, 1084, doi:10. 1029/ 2002RS002800.
7. Beyerle, G., J. Wickert, T. Schmidt, and C. Reigber, 2004: Atmospheric sounding by global navigation satellite system radio occultation: An analysis of the negative refractivity bias using CHAMP observations. J. Geophys. Res., 109, D01106, doi:10.1029/2003JD003922.
8. Courtier, P., and Coauthors, 1998: The ECMWF implementation of three-dimensional variational assimilation (313-Var). I: Formulation. Quart. J. Roy. Meteor. Soc., 124, 1783-1809.
9. Eriksson, P., C. Jiménez, D. Murtagh, G. Elgered, T. Kuhn, and S. Bühler, 2001: Assessment of uncertainties in LEO-LEO transmission observations through the troposphere/stratosphere. Research Rep. 186/ 2001, Department of Radio and Space Science, Chalmers University of Technology, Göteborg, Sweden, 153 pp.
10. Ericksson, P., C. Jiménez, D. Murtagh, G. Elgered, T. Kuhn, and S. Bühler 2003: Measurement of tropospheric/stratospheric transmission at 10-35 GHz for H2O retrieval in low Earth orbiting satellite links. Radio Sci., 38, 8069, doi:10.1029/2002RS002638.
11. Eyre, J. R., 1994: Assimilation of radio occultation measurements into a numerical weather prediction system. Tech. Memo. 199, European Centre for Medium-Range Weather Forecasts, 22 pp.
12. Eyre, J. R., 1997: Variational assimilation of remotely-sensed observations of the atmosphere. J. Meteor. Soc. Japan, 75, 331-338.
13. Feng, D. D., and B. M. Herman, 1999: Remotely sensing the earth's atmosphere using the Global Positioning System (GPS)-The GPS/MET data analysis. J. Atmos. Oceanic Technol., 16, 989-1002.
14. Feng, D. D., S. Syndergaard, B. M. Herman, E. R. Kursinski, T. P. Yunck, and F. W. Romberg, 2001: Deriving atmospheric water vapor and ozone profiles from active microwave occultation measurements. Proc. SPIE, 4169, 299-308.
15. Fjeldbo, G., A. J. Kliore, and V. R. Eshleman, 1971: The neutral atmosphere of Venus as studied with the Mariner V radio occultation experiments. Astron. J., 76, 123-140.
16. Foelsche, U., and G. Kirchengast, 2004: Sensitivity of GNSS occultation profiles to horizontal variability in the troposphere: A simulation study. Occultations for Probing Atmosphere and Climate, G. Kirchengast, U. Foelsche, and A. K. Steiner, Eds., Springer, 127-136.
17. Gorbunov, M. Y., 1988: Accuracy of the refractometric method in a horizontally nonuniform atmosphere. Izv., Atmos. Oceanic Phys., 24, 382-386.
18. Gorbunov, M. Y., 1990: Solution of inverse problems of remote atmospheric refractometry on limb paths. Izv., Atmos. Oceanic Phys., 26, 86-91.
19. Gorbunov, M. E., 2002: Canonical transform method for processing radio occultation data in the lower troposphere. Radio Sci., 37, 1076, doi:10.1029/2000RS002592.
20. Gorbunov, M. E., and A. S. Gurvich, 1998: Algorithms of inversion of Microlab-1 satellite data including effects of multipath propagation. Int. J. Remote Sens., 19, 2283-2300.
21. Gorbunov, M. E., and L. Kornblueh, 2003: Principles of variational assimilation of GNSS radio occultation data. Rep. 350, Max Planck Institute for Meteorology, Hamburg, Germany, 34 pp.
22. Ha, S.-Y., Y.-H. Kuo, Y.-R. Guo, and G.-H. Lim, 2003: Variational assimilation of slant-path wet delay measurements from a hypothetical ground-based GPS network. Part I: Comparison with precipitable water assimilation. Mon. Wea. Rev., 131, 2635-2655.
23. Hajj, G. A., E. R. Kursinski, L. J. Romans, W. I. Bertiger, and S. S. Leroy, 2002: A technical description of atmospheric sounding by GPS occultation. J. Atmos. Sol.-Terr. Phys., 64, 451-469.
24. Healy, S. B., 2001a: Radio occultation bending angle and impact parameter errors caused by horizontal refractive index gradients in the troposphere: A simulation study. J. Geophys. Res., 106, 11875-11889.
25. Healy, S. B., 2001b: Smoothing radio occultation bending angles above 40 km. Ann. Geophys., 19, 459-468.
26. Healy, S. B., and J. R. Eyre, 2000: Retrieving temperature, water vapour and surface pressure information from refractive-index profiles derived by radio occultation: A simulation study. Quart J. Roy. Meteor. Soc., 126, 1661-1683.
27. Healy, S. B., A. Jupp, D. Offiler, and J. Eyre, 2003: The assimilation of radio occultation measurements. First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, C. Reigber, H. Lühr, and P. Schwintzer, Eds., Springer, 453-461.
28. Herman, B. M., E. R. Kursinski, D. Feng, D. Flittner, D. Ward, S. Syndergaard, and E. Lane, 2003: Active tropospheric ozone and moisture sounder (ATOMS). Science Rep., NASA Contract NAS1-99055, Institute of Atmospheric Physics, The University of Arizona, Tucson, AZ, 85 pp.
29. Høeg, P., A. Hauchcorne, G. Kirchengast, S. Syndergaard, B. Belloul, R. Leitinger, and W. Rothleitner, 1995: Derivation of atmospheric properties using a radio occultation technique. Scientific Rep. 95-4, Danish Meteorological Institute, Copenhagen, Denmark, 210 pp.
30. Huang, X.-Y., 2000: Variational analysis using spatial filters. Mon. Wea. Rev., 128, 2588-2600.
31. Jensen, A. S., M. S. Lohmann, H.-H. Benzon, and A. S. Nielsen, 2003: Full spectrum inversion of radio occultation signals. Radio Sci., 38, 1040, doi: 10. 1029/2002RS002763.
32. Kuo, Y.-H., X. Zou, and W. Huang, 1997: The impact of global positioning system data on the prediction of an extratropical cyclone: An observing system simulation experiment. Dyn. Atmos. Oceans, 27, 439-470.
33. Kuo, Y.-H, S. V. Sokolovskiy, R. A. Anthes, and F. Vandenberghe, 2000: Assimilation of GPS radio occultation data for numerical weather prediction. Terr. Atmos. Oceanic Sci., 11, 157-186.
34. Kuo, Y,-H, T.-K. Wee, S. Sokolovskiy, C. Rocken, W. Schreiner, D. Hunt, and R. A. Anthes, 2004: Inversion and error estimation of GPS radio occultation data. J. Meteor. Soc. Japan, 82, 507-531.
35. Kursinski, E. R., G. A. Hajj, J. T. Schofield, R. P. Linfield, and K. R. Hardy, 1997: Observing earth's atmosphere with radio occultation measurements using the global positioning system. J. Geophys. Res., 102, 23 429-23 465.
36. Kursinski, E. R., D. Flittner, B. Herman, D. Feng, S. Syndergaard, and D. Ward, 2002a: An active microwave limb sounder for profiling water vapor, ozone, temperature, geopotential of pressure surfaces and clouds. Proc. NASA Earth Science Technology Conf., Pasadena, CA, NASA.
37. Jursinski, E. R., S. Syndergaard, D. Flittner, D. Feng, G. Hajj, B. Herman, D. Ward, and T. Yunck, 2002b: A microwave occultation observing system optimized to characterize atmospheric water, temperature and geopotential via absorption. J. Atmos. Oceanic Technol., 19, 1897-1914.
38. Liu, H., and X. Zou, 2003: Improvements to a GPS radio occultation ray-tracing model and their impacts on assimilation of bending angle. J. Geophys. Res., 108, 4548, doi:10.1029/2002JD003160.
39. Lorenc, A. C., 1986: Analysis methods for numerical weather prediction. Quart. J. Roy. Meteor. Soc., 112, 1177-1194.
40. Lyster, P. M., J. Guo, T. Clune, and J. W. Larson, 2004: The computational complexity and parallel scalability of atmospheric data assimilation algorithms. J. Atmos. Oceanic Technol., 21, 1689-1700.
41. Marquardt, C., J. R. Eyre, S. B. Healy, A. Jupp, and D. Offiler, 2003: Use of GPS radio occultation data in meteorological services. OIST-4 Proceedings, 4th Oersted International Science Team Conference, P. Stauning et al., Eds., Narayana Press, 261-268.
42. Melbourne, W. G., and Coauthors, 1994: The application of spaceborne GPS to atmospheric limb sounding and global change monitoring. JPL Publication 94-18, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 147 pp.
43. Palmer, P. I., J. J. Barnett, J. R. Eyre, and S. B. Healy, 2000: A nonlinear optimal, estimation inverse method for radio occultation measurements of temperature, humidity, and surface pressure. J. Geophys. Res., 105, 17 513-17 526.
44. Poli, P., and J. Joiner, 2003: Assimilation experiments of one-dimensional variational analyses with GPS/MET refractivity. First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, C. Reigber, H. Lühr, and P. Schwintzer, Eds., Springer, 515-520.
45. Poli, P., C. O. Ao, M. de la Torre Juárez, J. Joiner, G. A. Hajj, and R. M. Hoff, 2003: Evaluation of CHAMP radio occultation refractivity using data assimilation office analyses and radiosondes. Geophys. Res. Lett, 30, 1800, doi:10.1029/2003GL017637.
46. Rabier, F., A. McNally, E. Andersson, P. Courtier, P. Undén, J. Eyre, A. Hollingsworth, and F. Bouttier, 1998: The ECMWF implementation of three-dimensional variational assimilation (3D-Var). II: Structure functions. Quart. J. Roy. Meteor. Soc., 124, 1809-1829.
47. Rieder, M. J., and G. Kirchengast, 2001: Error analysis and characterization of atmospheric profiles retrieved from GNSS occultation data. J. Geophys. Res., 106, 31755-31770.
48. Rocken, C., and Coauthors, 1997: Analysis and validation of GPS/MET data in the neutral atmosphere. J. Geophys. Res., 102, 29 849-29 860.
49. Rodgers, C. D., 2000: Inverse Methods for Atmospheric Sounding. Series on Atmospheric, Oceanic and Planetary Physics, Vol. 2, World Scientific, 238 pp.
50. Saunders, R., M. Matricardi, and P. Brunel, 1999: An improved fast radiative transfer model for assimilation of satellite radiance observations. Quart. J. Roy. Meteor. Soc., 125, 1407-1425.
51. Schär, C., D. Leuenberger, O. Fuhrer, D. Lüthi, and C. Girard, 2002: A new terrain-following vertical coordinate formulation for atmospheric prediction models. Mon. Wea. Rev., 130, 2459-2480.
52. Schlatter, T. W., 2000: Variational assimilation of meteorological observations in the lower atmosphere: A tutorial on how it works. J. Atmos. Sol.-Terr. Phys., 62, 1057-1070.
53. Schreiner, W. S., D. C. Hunt, C. Rocken, and S. Sokolovskiy, 1998: Precise GPS data processing for the GPS/MET radio occultation mission at UCAR. Proc. National Technical Meeting "Navigation 2000," Long Beach, CA, Institute of Navigation, 103-112.
54. Smith, E. K., Jr., and S. Weintraub, 1953: The constants in the equation for atmospheric refractive index at radio frequencies. J. Res. Natl. Bur. Standards, 50, 39-41.
55. Sokolovskiy, S. V., 2001a: Modeling and inverting radio occultation signals in the moist troposphere. Radio Sci., 36, 441-458.
56. Sokolovskiy, S. V., 2001b: Tracking tropospheric radio occultation signals from low Earth orbit. Radio Sci., 36, 483-498.
57. Sokolovskiy, S. V., 2003: Effect of superrefraction on inversions of radio occultation signals in the lower troposphere. Radio Sci., 38, 1058, doi:10.1029/2002RS002728.
58. Sokolovskiy, S. V., Y.-H. Kuo, and W. Wang, 2005: Assessing the accuracy of a linearized observation operator for assimilation of radio occultation data: Case simulations with a high-resolution weather model. Mon. Wea. Rev., 133, 2200-2212.
59. Steiner, A. K., G. Kirchengast, and H. P. Ladreiter, 1999: Inversion, error analysis, and validation of GPS/MET occultation data. Ann. Geophys., 16, 122-138.
60. Syndergaard, S., 1998: Modeling the impact of the earth's oblateness on the retrieval of temperature and pressure profiles from limb sounding. J. Atmos. Sol.-Terr. Phys., 60, 171-180.
61. Syndergaard, S., D. Flittner, R. Kursinski, and B. Herman, 2003: Simulating the influence of horizontal gradients on refractivity profiles from radio occultations. OIST-4 Proceedings, 4th Oersted International Science Team Conference, P. Stauning et al., Eds., Narayana Press, 245-250.
62. Syndergaard, S., D. Flitter, E. R. Kursinski, D. D. Feng, B. M. Herman, and D. M. Ward, 2004: Simulating the influence of horizontal gradients on retrieved profiles from ATOMS occultation measurements-A promising approach for data assimilation. Occultations for Probing Atmosphere and Climate, G. Kirchengast, U. Foelsche, and A. K. Steiner, Eds., Springer, 221-232.
63. Ware, R., and Coauthors, 1996: GPS sounding of the atmosphere from low earth orbit: Preliminary results. Bull. Amer. Meteor. Soc., 77, 19-40.
64. Wickert, J., and Coauthors, 2001: Atmosphere sounding by GPS radio occultation: First results from CHAMP. Geophys. Res. Lett., 28, 3263-3266.
65. Yunck, T. P., G. F. Lindal, and C.-H. Liu, 1988: The role of GPS in precise earth observation. Navigation into the 21st Century: Position Location and Navigation Symp., PLANS '88, Orlando, FL, IEEE, 251-258.
66. Zängl, G., 2003: A generalized sigma-coordinate system for the MM5. Mon. Wea. Rev., 131, 2875-2884.
67. Zou, X., Y.-H. Kuo, and Y.-R. Guo, 1995: Assimilation of atmospheric radio refractivity using a nonhydrostatic adjoint model. Mon. Wea. Rev., 1123, 2229-2249.
68. Zou, X., and Coauthors, 1999: A raytracing operator and its adjoint for the use of GPS/MET refraction angle measurements. J. Geophys. Res., 104, 22 301-22 318.
69. Zou, X., B. Wang, H. Liu, R. A. Anthes, T. Matsumura, and Y.-J. Zhu, 2000: Use of GPS/MET refraction angles in three-dimensional variational analysis. Quart. J. Roy. Meteor. Soc., 126, 3013-3040.