Why is there more ionosphere in January than in July? the annual asymmetry in the F2-layer

Annales Geophysicae

Volumn 24, Issue 12, 2006, Pages 3293-3311

  Rishbeth, H ^a   F Muller Wodarg I C ^b  

^a UNIVERSITY OF SOUTHAMPTON   (United Kingdom)

^b IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ASYMMETRY; AURORA; ELECTRON DENSITY; IONOSPHERE; MESOSPHERE; NORTHERN HEMISPHERE; SOLAR ACTIVITY; SOUTHERN HEMISPHERE; THERMOSPHERE;

EID: 33845958798     PISSN: 09927689     EISSN: 14320576     Source Type: Journal    
DOI: 10.5194/angeo-24-3293-2006     Document Type: Article

References (39)

1. Akmaev, R. A. and Shved, G. M.: Modeling of the composition of the lower thermosphere taking into account of the dynamics with application to tidal variations of the OI (5577 A) airglow, J. Atmos. Terrest. Phys., 42, 705–716, 1980.
2. Bailey, D. K.: The geomagnetic nature of the F2 layer longitude effect, Terrest. Magn. Atmos. Elect., 53, 35–39, 1948.
3. Berkner, L. V. and Wells, H. W.: Non–seasonal change of F2-region ion density, Terrest. Magn. and Atmos. Elec., 43, 15–36, 1938.
4. Bilitza, D.: International Reference Ionosphere 2000, Radio Science 36, 261–275, 2001.
5. Buonsanto, M. J.: Possible effects of the changing earth-sun distance on the upper atmosphere, S. Pacific J. Nat. Sci., 8, 58–65, 1986.
6. Chapman, S. and Lindzen, R. S.: Atmospheric Tides. D. Reidel Publishing Co., Dordrecht, 1970.
7. Christensen, A. B., Paxton, L. J., Avery, S., Craven, J., Crowley, G., Humm, D. C., Kil, H., Meier, R. R., Meng, C.-I., Morrison, D., Ogorzalek, B. S., Straus, P., Strickland, D. J., Swenson, R. M., Walterscheid, R. L., Wolven, B., and Zhang, Y.: Initial observations with the Global Ultraviolet Imager (GUVI) in the NASA TIMED satellite mission, J. Geophys. Res., 108, A12, doi:10.1029/2003JA009918, 2003.
8. Duncan, R. A.: F-region seasonal and magnetic storm behaviour, J. Atmos. Terrest. Phys., 31, 59–70, 1969.
9. Fesen, C. G.: Theoretical effects of tides and auroral activity on the low latitude ionosphere, J. Atmos. Solar-Terrest. Phys., 59, 1521–1532, 1997.
10. Forbes, J. M. and Vial, C.: Monthly simulations of the solar semidiurnal tide in the mesosphere and lower thermosphere, J. Atmos. Terrest. Phys., 51, 649–661, 1989.
11. Forbes, J. M., Roble, R. G., and Fesen, C. G.: Acceleration, heating and compositional mixing of the thermosphere due to upward propagating tides, J. Geophys. Res., 98, 311–321, 1993.
12. Foster, J. C., Holt, J. M., Musgrove, R. G., and Evans, D. S.: Ionospheric convection associated with discrete levels of particle precipitation, Geophys. Res. Letters, 13, 656–-659, 1986.
13. Fuller-Rowell, T. J.: The "thermospheric spoon": A mechanism for the semiannual density variation, J. Geophys. Res., 103, 3951–3956, 1998.
14. Fuller-Rowell, T. J. and Evans, D.: Height-integrated Pedersen and Hall conductivity patterns inferred from the TIROS-NOAA satellite data, J. Geophys. Res. 92, 7606–7618, 1987.
15. Fuller-Rowell, T. J., Rees, D., Quegan, S., Moffett, R. J., Codrescu, M. V., and Millward, G. H.: A coupled thermosphere-ionosphere model (CTIM), STEP Handbook of Ionospheric Models, edited by: Schunk, R. W., Utah State University, Logan, Utah, 217–238, 1996.
16. Harris, M. J., Arnold, N. F., and Aylward, A. D.: A study into the effect of the diurnal tide on the structure of the background mesosphere and thermosphere using the new coupled middle atmosphere and thermosphere (CMAT) general circulation model, Ann. Geophys., 20, 225–235, 2002.
17. Hedin, A. E.: MSIS-86 thermospheric model, J. Geophys. Res., 92, 4649–4662, 1987.
18. Mendillo, M., Rishbeth, H., Roble, R. G., and Wroten, J.: Modelling F2-layer seasonal trends and day-to-day variability driven by coupling with the lower atmosphere, J. Atmos. Solar-Terrest. Phys. 64, 1911–1931, 2002.
19. Mendillo, M., Huang, C.-L., Pi, X.-Q., Rishbeth, H., and Meier, R. R.: The global asymmetry in ionospheric total content, J. Atmos. Solar-Terrest. Phys., 67, 1377–1387, 2005.
20. Millward, G. H., Moffett, R. J., Quegan, S., and Fuller-Rowell, T. J.: A coupled thermosphere-ionosphere-plasmasphere model (CTIP), STEP Handbook of Ionospheric Models, edited by: Schunk, R. W., Utah State University, Logan, Utah, 239–280, 1996.
21. Mller-Wodarg, I. C. F., Aylward, A. D., and Fuller-Rowell, T. J.: Tidal oscillations in the thermosphere: a theoretical investigation of their sources, J. Atmos. Solar-Terrest. Phys., 63, 899–914, 2001.
22. Rawer, K., Bilitza, D., and Ramakrishnan, S.: Goals and status of the International Reference Ionosphere, Rev. Geophys. Space Phys., 16, 177–181, 1978.
23. Richards, P. G., Chang, T., and Comfort, R. H.: On the causes of the annual variation in the plasmaspheric electron density, J. Atmos. Solar-Terrest. Phys., 62, 935–946, 2000.
24. Richmond, A. D., Blanc, M., Emery, B. A., Wand, R. H., Fejer, B. G., Woodman, R. F., Ganguly, S., Amayenc, P., Behnke, R. A., Calderon, C., and Evans, J. V.: An empirical model of quiet-day electric fields at middle and low latitudes. J. Geophys. Res, 85, 4658–4664, 1980.
25. Rishbeth, H.: How the thermospheric circulation affects the ionospheric F2-layer, J. Atmos. Terrest. Phys., 60, 1385–1402, 1998.
26. Rishbeth, H. and Mller-Wodarg, I. C. F.: Vertical circulation and thermospheric composition: a modelling study, Ann. Geophys., 17, 794–805, 1999.
27. Rishbeth, H., Mller-Wodarg, I. C. F., Zou, L., Fuller-Rowell, T. J., Millward, G. H., Moffett, R. J., Idenden, D. W., and Aylward, A. D.: Annual and semiannual variations in the ionospheric F2-layer: II. Physical discussion, Ann. Geophys., 18, 945–956, 2000a.
28. Rishbeth, H., Sedgemore-Schulthess, K. J. F., and Ulich, Th.: Semiannual and annual variations in the height of the ionospheric F2-peak, Ann. Geophys., 18, 285–299, 2000b.
29. Rishbeth, H., Heelis R. A., and Mller-Wodarg, I. C. F.: Variations of thermospheric composition according to AE-C data and CTIP modelling, Ann. Geophys. 22, 441–452, 2004.
30. Seaton, S. L. and Berkner, L. V.: Non-seasonal behavior of the F-region, Terrest. Magn. and Atmos. Elec., 44, 313–319, 1939.
31. Spencer, N. W., Niemann, H. B., and Carignan, G. R.: The neutral-atmosphere temperature experiment, Radio Sci., 8, 287–296, 1973.
32. Su, Y. Z., Bailey, G. J., and Oyama, K.-I.: Annual and seasonal variations in the low-latitude topside ionosphere, Ann. Geophys., 16, 974–985, 1998.
33. Titheridge, J. E.: Modelling the peak of the ionospheric E-layer, J. Atmos. Solar-Terrest. Phys. 62, 93–114, 2000.
34. Titheridge, J. E. and Buonsanto, M. J.: Annual variations in the electron content and height of the F layer in the northern and southern hemispheres, related to neutral composition, J. Atmos. Terrest. Phys. 45, 683–696, 1983.
35. Torr, M. R. and Torr, D. G.: The seasonal behaviour of the F2-layer of the ionosphere, J. Atmos. Terrest. Phys. 35, 2237–2257, 1973.
36. Tremellen, K. W. and Cox, J. W.: Influence of wave propagation on the planning of short-wave communications, Proc. Inst. Elec. Eng., 94-IIIA, 200–219, 1947.
37. Yonezawa, T.: The solar-activity and latitudinal characteristics of the seasonal, non-seasonal and semi-annual variations in the peak electron densities of the F2-layer at noon and at midnight in middle and low latitudes. J. Atmos. Terrest.Phys., 33, 887–907, 1971.
38. Yonezawa, T. and Arima, Y.: On the seasonal and non-seasonal annual variations and the semi-annual variation in the noon and midnight electron densities of the F2 layer in middle latitudes, J. Radio Res. Labs., 6, 293–309, 1959.
39. Zou, L., Rishbeth, H., Mller-Wodarg, I. C. F., Aylward, A. D., Millward, G. H., Fuller-Rowell, T. J., Idenden, D. W., and Moffett, R. J.: Annual and semiannual variations in the ionospheric F2-layer: I. Modelling, Ann. Geophys., 18, 927–944, 2000.