Intra-seasonal rainfall oscillations over central Africa: Space-time character and evolution

Theoretical and Applied Climatology

Volumn 94, Issue 1-2, 2008, Pages 67-80

  Tazalika, L ^a   Jury, M R ^b,c  

^a UGANDA NATIONAL METEOROLOGICAL AUTHORITY   (Uganda)

^b UNIVERSITY OF ZULULAND   (South Africa)

^c UNIVERSITY OF PUERTO RICO   (Puerto Rico)

Author keywords

[No Author keywords available]

Indexed keywords

ANNUAL CYCLE; CLIMATE OSCILLATION; RAINFALL; SEASONAL VARIATION; ZONAL WIND;

AFRICA; ANGOLA; ATLANTIC OCEAN; CONGO BASIN; GULF OF GUINEA; INDIAN OCEAN; INDIAN OCEAN (WEST); SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

EID: 51749109997     PISSN: 0177798X     EISSN: 14344483     Source Type: Journal    
DOI: 10.1007/s00704-007-0349-6     Document Type: Article

References (35)

1. Agumba FO (1985) Fluctuation of long rains in Kenya in relation to large scale circulation. IMTR Nairobi, Kenya Res Report, Vol. 85, 27 pp
2. Bjornsson H, Venegas SA (1997) A manual for EOF and SVD Analysis of climatic Data, 1997. CCGCR Report 97: 50-52
3. DJ Cecil EJ Zipser SW Nesbitt 2005 3 years of TRMM precipitation features: Radiometric and lightning characteristics Mon Wea Rev 133 543-566 10.1175/MWR-2876.1
4. T Chen M Murakami 1988 The 30-50 day variation of convective activity over the western Pacific Ocean with the emphasis on the northwestern region Mon Wea Rev 116 892-906 10.1175/ 1520-0493(1988)116<0892:TDVOCA>2.0.CO;2
5. S Gollmer RF Harshvardhan Cahalan JB Snider 1995 Windowed and wavelet analysis of marine stratocumulus cloud inhomogeneity J Atmos Sci 52 3013-3030 10.1175/1520-0469(1995)052<3013:WAWAOM>2.0.CO;2
6. HH Hendon ML Salby 1994 The life cycle of the Madden Julian oscillation J Atmos Sci 51 2225-2237 10.1175/ 1520-0469(1994)051<2225:TLCOTM>2.0.CO;2
7. Q Hu DA Randall 1994 Low frequency oscillations in radiative-convective systems J Atmos Sci 51 1089-1099 10.1175/ 1520-0469(1994)051<1089:LFOIRC>2.0.CO;2
8. J Huang H Cho 1998 Seasonal modulated intra-seasonal oscillations in a GCM simulation Int J Climatol 18 1521-1532 10.1002/ (SICI)1097-0088(19981130)18:14<1521::AID-JOC319>3.0.CO;2-1
9. Jury MR (2007) A comparison of low and high frequency climate factors influencing river flows in southern Angola, (submitted)
10. SR Kemball-Cook B Wang 2001 Equatorial waves and air sea interaction in the boreal summer intra-seasonal oscillation J Climate 14 2923-2942 10.1175/1520-0442(2001)014<2923:EWAASI>2.0.CO;2
11. KM Lau HY Weng 1995 Climate signal detection using wavelet transform. How to make a time series sing Bull Amer Meteor Soc 76 2391-2402 10.1175/ 1520-0477(1995)076<2391:CSDUWT>2.0.CO;2
12. RA Madden PR Julian 1971 Detection of a 40-50 day oscillation in the zonal wind in the tropical Pacific J Atmos Sci 28 702-708 10.1175/ 1520-0469(1971)028<0702:DOADOI>2.0.CO;2
13. RA Madden PR Julian 1972 Description of global-scale circulation cell in the tropics with a 40-50 day period J Atmos Sci 29 1109-1123 10.1175/ 1520-0469(1972)029<1109:DOGSCC>2.0.CO;2
14. RA Madden PR Julian 1994 Observations of the 40-50 day tropical oscillation: A review Mon Wea Rev 122 814-837 10.1175/ 1520-0493(1994)122<0814:OOTDTO>2.0.CO;2
15. RA Madden DJ Shea GW Branstator JJ Tribbia R Weber 1993 The effects of imperfect spatial and temporal sampling on estimates of the global mean temperature: Experiments with model data J Climate 6 1057-1066 10.1175/ 1520-0442(1993)006<1057:TEOISA>2.0.CO;2
16. JR McCollum RA Gruber MB Ba 2000 Discrepancy between gauge and satellite estimates of rainfall over equatorial Africa J Appl Meteor 39 666-679
17. GR McGregor S Niewolt 1998 Tropical climatology An introduction to the climates of low latitudes Wiley Inc. New York 339pp
18. SD Meyers BG Kelley JJ O'Brien 1993 An introduction to wavelet analysis in oceanography and meteorology: With application to the dispersion of Yania waves Mon Wea Rev 121 2858-2866 10.1175/ 1520-0493(1993)121<2858:AITWAI>2.0.CO;2
19. JR Milford G Dugdale 1990 Estimation of rainfall using geostationary satellite data MD Steven JA Clark Application of remote sensing in agriculture Butterworths London 97-110
20. F Mounier S Janicot 2004 Evidence of two independent modes of convection at intraseasonal timescale in the West African summer monsoon Geophys Res Lett 31 L1611610.1029/2004GL020665 doi: 10.1029/2004GL020665
21. JE Mpeta MR Jury 2001 Intra-seasonal convective structure and evolution over tropical east Africa Climate Res 17 83-92 10.3354/cr017083
22. Mulenga HM (1998) Southern African climatic anomalies, summer rainfall and the Angola low. Ph.D. thesis, Oceanogr Dept. Univ., Cape Town, 261 pp
23. CC Mutai MN Ward 2000 East African rainfall and tropical circulation/ convection on intra-seasonal to inter-annual time scales J Climate 13 3915-3939 10.1175/1520-0442(2000)013<3915:EARATT>2.0.CO;2
24. RE Okoola 1999 A diagnostic study of the east African monsoon circulation during the northern hemisphere spring season Int J Climate 19 143-168 10.1002/ (SICI)1097-0088(199902)19:2<143::AID-JOC342>3.0.CO;2-U
25. H Rui B Wang 1990 Development characteristics and Dynamic structure of tropical intra-seasonal convective anomalies J Atmos Sci 47 357-379 10.1175/1520-0469(1990)047<0357:DCADSO>2.0.CO;2
26. ML Salby HH Hendon 1994 Intra-seasonal behavior of clouds, temperature and motion in the tropics J Atmos Sci 51 2207-2224 10.1175/ 1520-0469(1994)051<2207:IBOCTA>2.0.CO;2
27. KR Sperber 2004 Madden-Julian variability in NCAR CAM and CCSM models Clim Dynam 23 3-4 259-278
28. Tazalilka L (2003) Satellite derived rainfall over tropical Africa, its pattern, variability and calibration. MSc thesis, Univ Zululand, 150 pp
29. EK Vizy KH Cook 2003 Connection between the summer east African and Indian rainfall regimes J Geophys Res 108 D16 247-285 10.1029/ 2003JD003452
30. DE Waliser C Jones JE Schemm N Graham 1999 A statistical extended range tropical model based on the slow evolution of the Madden-Julian oscillation J Climate 12 1918-1939 10.1175/ 1520-0442(1999)012<1918:ASERTF>2.0.CO;2
31. HY Weng KM Lau 1994 Wavelet period doubling and time frequency localization with application to satellite data analysis J Atmos Sci 51 2523-2541 10.1175/1520-0469(1994)051<2523:WPDATL>2.0.CO;2
32. M Wheeler GN Kiladis PJ Webster 2000 Large-scale dynamical fields associated with convectively coupled equatorial waves J Atmos Sci 57 613-640 10.1175/1520-0469(2000)057<0613:LSDFAW>2.0.CO;2
33. P Xie PA Arkin 1997 Global precipitation: A 17 year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs Bull Amer Meteor Soc 78 2539-2558 10.1175/ 1520-0477(1997)078<2539:GPAYMA>2.0.CO;2
34. Yeshanew A (2003) Climate variability and prediction in tropical North Africa. Ph.D. thesis, University of Zululand, South Africa, 546 pp
35. C Zhang HH Hendon 1996 Propagating and standing components of the intra-seasonal oscillation in tropical convection J Atmos Sci 54 741-752 10.1175/1520-0469(1997)054<0741:PASCOT>2.0.CO;2