Validation of operational seasonal rainfall forecast in Ethiopia

Water Resources Research

Volumn 49, Issue 11, 2013, Pages 7681-7697

  Korecha, Diriba ^a,b   Sorteberg, Asgeir ^b  

^a National Meteorological Agency   (Ethiopia)

^b UNIVERSITY OF BERGEN   (Norway)

Author keywords

analog; ENSO; Ethiopia; forecast; season; verification

Indexed keywords

ANALOG; ENSO; ETHIOPIA; FORECAST VERIFICATIONS; METEOROLOGICAL AGENCY; METEOROLOGICAL STATION; RANKED PROBABILITY SKILL SCORES; SEASON;

FORECASTING; METEOROLOGY; VERIFICATION; WEATHER FORECASTING;

RAIN;

CLIMATOLOGY; DATA ACQUISITION; PROBABILITY; RAINFALL; SEASONAL VARIATION; STATISTICAL ANALYSIS; WEATHER FORECASTING;

ETHIOPIA;

EID: 84887888773     PISSN: 00431397     EISSN: 19447973     Source Type: Journal    
DOI: 10.1002/2013WR013760     Document Type: Article

References (54)

1. Agarwal, N., C. M. Kishtawal, and, P. K. Pal, (2001), An analogue prediction method for global sea surface temperature, Curr. Sci., 80 (1), 49-55. (Pubitemid 33620171)
2. Araya, A., and, L. Stroosnijder, (2011), Assessing drought risk and irrigation need in northern Ethiopia, Agric. Forest Meteorol., 151, 425-436.
3. Barnett, T. P., and, R. W. Preisendorfer, (1978), Multifield analog prediction of short-term climate fluctuations using a climate state vector, J. Atmos. Sci., 35, 1771-1787.
4. Barnston, A. G., and, R. E. Livezey, (1989), An operational multifield analog/antianalog prediction system for United States seasonal temperatures. Part II: Spring, summer, fall, and intermediate 3-month period experiments, J. Clim., 2, 513-541.
5. Barnston, A. G., and, J. S. Mason, (2011), Evaluation of IRI's seasonal climate forecasts for the extreme 15% tails, Wea. Forecasting, 26, 545-555.
6. Barnston, A. G., J. S. Mason, G. A. DeWitt, L. Goddard, and, X. Gong, (2010), Verification of the First 11 years of IRI's seasonal climate forecasts, J. Appl. Meteorol. Climatol., 49, 493-520.
7. Batte, L. E., and, M. D. Deque, (2011), Seasonal predictions of precipitation over Africa using coupled ocean-atmosphere general circulation models: Skill of the ENSEMBLES project multimodel ensemble forecasts, Tellus, Ser. A, 63, 283-299.
8. Bekele, F., (1997), Ethiopian use of ENSO information in its seasonal forecasts, Internet J. Afr. Studies, No. 2. [Available at http://www.ccb.ucar. edu/ijas/ijasno2/bekele.html.]
9. Block, P., and, B. Rajagopalan, (2007), Interannual variability and ensemble forecast of upper Blue Nile basin Kiremt season precipitation, J. Hydrometeorol., 8 (3), 327-343. (Pubitemid 47091122)
10. Brett, A. M., and, G. Thompson, (2006), Analogue forecasting of New Zealand climate anomalies, Int. J. Climatol., 26, 485-504.
11. Camberlin, P., (1997), Rainfall anomalies in the source region of the Nile and their connection with the Indian summer monsoon, J. Clim., 10, 1380-1392.
12. Chapman, W. L., and, J. E. Walsh, (1991), Long-range prediction of regional sea ice anomalies in the Arctic, Wea. Forecasting, 6, 271-288.
13. Degefu, W., (1987), Some aspects of meteorological drought in Ethiopia, in Drought and Hunger in Africa: Denying Famine a Future, edited by, M. H. Glantz, pp. 23-36, Cambridge Univ. Press, Cambridge, U. K.
14. Dinku, T., K. Asefa, K. Hailemariam, D. Grimes, and, S. Connor, (2011), Improving availability, access and use of climate information, WMO Bull., 60 (2), 80-86.
15. Diro, G., E. Black, and, D. Grimes, (2008), Seasonal forecasting of Ethiopian spring rains, Meteorol. Appl., 15, 73-83.
16. Diro, G., D. Grimes, E. Black, A. O'Neill, and, P. Iguzquiza, (2009), Evaluation of reanalysis rainfall estimates over Ethiopia, Int. J. Climatol., 29, 67-78.
17. Diro, G. T., D. I. F. Grimes, and, E. Black, (2011), Teleconnections between Ethiopian summer rainfall and sea surface temperature: Part II. Seasonal forecasting, Clim. Dyn., 37, 121-131.
18. Drosdowsky, W., (1994), Analogue (non-linear) forecasts of the Southern Oscillation index time series, Wea. Forecasting, 9, 78-84.
19. Elagib, N. A., and, M. M. Elhag, (2011), Major climate indicators of ongoing drought in Sudan, J. Hydrol, 409, 612-625.
20. Gibbs, W. J., and, J. V. Maher, (1967), Rainfall deciles and drought indicators, Bur. Meteorol. Bull., 48, 117.
21. Gissila, T., E. Black, D. I. F. Grimes, and, J. M. Slingo, (2004), Seasonal forecasting of the Ethiopian summer rains, Int. J. Climatol., 24, 1345-1358. (Pubitemid 39246575)
22. Goddard, L., A. G. Barnston, and, S. J. Mason, (2003), Evaluation of the IRI's "Net Assessment" seasonal climate forecasts: 1997-2001, Bull. Am. Meteorol. Soc., 84, 1761-1781.
23. Hammer, G. L., N. Nicholls, and, C. Mitchell, (2000), Applications of seasonal climate forecasting in agricultural and ecosystems, Atmos. and Oceanic Sci. Libr., Kluwer Acad, Dordrecht, The Netherlands.
24. Indeje, M., F. H. M. Semazzi, and, L. J. Ogallo, (2000), ENSO signals in East African rainfall seasons, Int. J. Climatol., 20, 19-46. (Pubitemid 30149929)
25. Jolliffe, I. T., and, D. B. Stephenson, (2003), Forecast Verification: A Practitioner's Guide in Atmospheric Science, edited by, I. T. Jolliffe, and, D. B. Stephenson, pp. 1-12, Wiley, Chichester.
26. Kassahun, B., (1987), Weather systems over Ethiopia, paper presented at the first international Technical Conference on Meteorological Research in Eastern and Southern Africa, pp. 53-57, Nairobi, Kenya, UCAR.
27. Korecha, D., and, A. Barnston, (2007), Predictability of June-September rainfall in Ethiopia, Mon. Weather Rev., 135, 628-650. (Pubitemid 46344379)
28. Livezey, R. E., A. G. Barnston, G. V. Gruza, and, E. Y. Ran'kova, (1994), Comparative skill of two analog seasonal temperature prediction systems: Objective selection of predictors, J. Clim., 7, 608-615. (Pubitemid 24404967)
29. Mason, S. J., and, S. Chidzambwa, (2008), Position paper: Verification of African RCOF forecasts, Tech. Rep. 09-02, International Research Institute for Climate and Society, Columbia University, N. Y.
30. Mason, S. J., and, A. P. Weigel, (2009), A generic forecast verification framework for administrative purposes, Mon. Weather Rev., 137, 331-349.
31. Mohamed, Y. A., B. J. J. M. van den Hurk, H. H. G. Savenije, and, W. G. M. Bastiaanssen, (2005), Hydroclimatology of the Nile: Results from a regional climate model, Hydrol. Earth Syst. Sci., 9, 263-278. (Pubitemid 41568095)
32. Murphy, A. H., (1988), Skill scores based on the mean square error and their relationships to the correlation coefficient, Mon. Weather Rev., 116, 2417-2424.
33. Namias, J., (1968), Long range weather forecasting-History, current status, and outlook, Bull. Am. Meteorol. Soc., 49, 438-470.
34. Ng'ongolo, H. K., and, S. P. Smyshlyaev, (2010), The statistical prediction of East African rainfalls using quasi-biennial oscillation phases information, Nat. Sci., 12, 1407-1416, doi: 10.4236/ns.2010.212172.
35. Nicholls N., (1980), Long-range weather forecasting-Value, status and prospects, Rev. Geophys. Spec. Phy., 18, 771-788. (Pubitemid 11470160)
36. Nicholson, S. E., (2000), The nature of rainfall variability over Africa on time scales of decades to millennia, Global Planet. Change, 26, 137-158.
37. NMA (2013), National Meteorological Agency of Ethiopia [Available at http://www.ethiometmaprooms.gov.et:8082/maproom/Climatology/Climate-Forecast/.]
38. NMSA, (1996), Climatic and agroclimatic resources of Ethiopia, Natl. Meteorol. Serv. Agency of Ethiopia, Meteorol. Res. Rep. Ser., 1 (1), 1-137.
39. NOAA (2013), Cold and Warm Episodes by Season, National Oceanic and Atmospheric Administration (NOAA). [Available at http://www.cpc.ncep.noaa.gov/ products/analysis-monitoring/ensostuff/ensoyears.shtml.]
40. Penland, C., and, P. D. Sardeshmukh, (1995), The optimal growth of tropical sea surface temperature anomalies, J. Clim., 8, 1999-2024. (Pubitemid 26472943)
41. Shanko, D., and, P. Camberlin, (1998), The effect of the southwest Indian Ocean tropical cyclones on Ethiopian drought, Int. J. Climatol., 18, 1373-1378.
42. Segele, Z. T., and, P. J. Lamb, (2005), Characterization and variability of Kiremt rainy season over Ethiopia, Meteorol. Atmos. Phys., 89, 153-180. (Pubitemid 40959189)
43. Segele, Z. T., P. Lamb, and, L. Leslie, (2009a), Large-scale atmospheric circulation and global sea surface temperature associations with Horn of Africa June-September rainfall, Int. J. Climatol., 29, 1075-1100.
44. Segele, Z. T., P. Lamb, and, L. Leslie, (2009b), Seasonal-to-Interannual variability of Ethiopia/Horn of Africa monsoon. part I: Associations of wavelet-filtered large-scale atmospheric circulation and global sea surface temperature, J. Clim., 22, 3396-3421.
45. Sileshi, Y., and, G. R. Demarée, (1995), Rainfall variability in the Ethiopian and Eritrean highlands and its links with the Southern Oscillation Index, J. Biogeogr., 22, 945-952. (Pubitemid 26475283)
46. Sooraj, K. P., H. Annamalai, A. Kumar, and, H. Wang, (2012), A comprehensive assessment of CFS seasonal forecasts over the tropics, Wea. Forecasting, 27, 3-27. doi:http://dx.doi.org/10.1175/WAF-D-11-00014.1.
47. Tsegay, W., (1998), El Niño and drought early warning in Ethiopia, Internet J. Afr. Studies, No. 2. [Available at http://www.ccb.ucar.edu/ijas/ ijasno2/georgis.html.]
48. Viste, E., and, A. Sorteberg, (2012), Moisture transport into the Ethiopian highlands, Int. J. Climatol., 33, 249-263, doi: 10.1002/joc.3409.
49. Wang, G., and, E. A. B. Eltahir, (1999), Use of ENSO information in medium- and long-range forecasting of the Nile floods, J. Clim., 12, 1726-1737.
50. Webster, P. J., and, C. D. Hoyos, (2010), Beyond the spring barrier?, Nat. Geosci., 3, 152-153.
51. Wilks, D. S., (2006), Statistical Methods in the Atmospheric Sciences, 2nd ed., 648 pp., Academic.
52. WMO (2002), Long-range forecasting progress report for 2001, WMO/TD-No. 1150, LRFP Rep. Ser. 8, pp. 89, World Meteorol. Organ.
53. Wolff, C., G. H. Haug, A. Timmermann, J. S. S. Damsté, A. Brauer, D. M. Sigman, M. A. Cane, and, D. Verschuren, (2011), Reduced interannual rainfall variability in East Africa during the last ice age, Science, 333, 743-746.
54. Wolter, K., and, M. S. Timlin, (1998), Measuring the strength of ENSO events: How does 1997/98 rank?, Weather, 53 (9), 315-324.