Abstract
In this chapter, indexes of the Intra-Americas or Caribbean Low-Level Jet (IALLJ or CLLJ, respectively), Niño 3, Tropical North Atlantic (NATL), Atlantic Multidecadal Oscillation (AMO), and Outgoing Long Wave Radiation (OLR) are quantified for the period 1950–2007, to study their relationship with tropical cyclone (TC) frequency for summer–autumn of the Northern Hemisphere. A remarkable inverse relationship is found between both, the strength of the wind speed at 925 hPa and the vertical wind shear at low levels, and the monthly relative frequency of TCs for two selected areas in the Caribbean. The July peak in wind speed and low-level vertical wind shear are associated with a minimum in the monthly relative frequency of TCs. On the contrary, a decrease in the wind speed and vertical shears are associated with a maximum value of the relative frequency of TCs. Stronger (weaker) than normal IALLJ summer winds (July–August) during warm (cold) ENSO events imply a stronger (weaker) than normal vertical wind shear at low-levels in the Caribbean. This condition may inhibit (allow) deep convection, disfavoring (favoring) TC development during these months. Correlation values of the monthly mean CLLJ core winds and the monthly normalized values of NATL – Niño 3 index for 1950–2007 showed statistical significance greater than 99% during July–August. During El Niño years, low-level wind increases at the jet core strengthening the low level convergence near Central America at the jet exit and the low-level divergence in the central Caribbean at the jet entrance. The descending motion associated with the latter acts as an inhibiting factor for convection and TC development. TC activity in the Caribbean is not only sensitive to ENSO influences, but to the strength of the CLLJ vertical wind shear, to barotropic energy conversions induced by the lateral wind shear, to the intensity of the regional scale descending motion associated with the jet entrance, and to the SST cooling generated by the CLLJ at the sea surface. Climatology of a group of General Circulation Models used in the 2007 report of the IPCC were tested to study their ability to capture the low-level wind annual cycle over the Caribbean and the known CLLJ structure. Some models do not capture basic characteristics of the jet. A discussion of cyclone potential over the Caribbean, based on the relationships developed using the models climatology, is presented for the period 2010–2050. As a study case, the findings were contrasted with the observed 2008 climate over the IAS region. Rainy season for 2008 in Central America evolved in a way consistent with the presence of La Niña event and the meridional migration of the ITCZ. Wind anomalies associated with the IALLJ were larger (smaller) than normal during February (July) 2008, in agreement with earlier findings in regards to the relationship of the IALLJ and ENSO phases. The year of 2008 was very active for tropical storm formation in the Caribbean basin (10–22. 5∘N, 60–82. 5∘W). From 16 named storms observed in the Atlantic, 10 entered the Caribbean basin. Eight (five) Atlantic cyclones were hurricanes (strong hurricanes) and from the five hurricanes crossing the Caribbean basin, four were strong.
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References
Alfaro E (2002) Some characteristics of the annual precipitation cycle in Central America and their relationships with its surrounding tropical oceans. Top Meteorol Oceanogr 9(2):88–103 Available at the Instituto Meteorológico Nacional (http://www.imn.ac.cr/publicaciones/index.html), San José, Costa Rica
Amador J (1998) A climatic feature of tropical Americas: The trade wind easterly jet. Top Meteorol Oceanogr 5(2):91–102 Available at the Instituto Meteorológico Nacional (http://www.imn.ac.cr/publicaciones/index.html) San José, Costa Rica
Amador J (2008) The Intra-Americas Seas Low-Level Jet (IALLJ): Overview and future research. In: Gimeno L, Garcia R, Trigo R (eds) Trends and directions in climate research. Ann NY Acad Sci 1146(1):153–188
Amador J, Magaña V (1999) Dynamics of the low level jet over the Caribbean Sea. Preprints 20th Conference in Tropical Meteorology. 10–15 January 1999 Dallas, Texas. Am Met Soc:401–402
Amador J, Chacón R, Laporte S (2003) Climate and climate variability in the Arenal Basin of Costa Rica. In: Diaz HF, Morehouse B (eds) Climate and water: transboundary challenges in the Americas. Kluwer Academic Publishers, Holland, pp 317–350
Amador J, Alfaro E, Lizano O, Magaña V (2006) Atmospheric forcing of the eastern tropical Pacific. A review. Prog Oceanogr 6(2–4):101–142
Bender M, Knutson T, Tuleya R, Sirutis J, Vecchi G, Barner S, Held I (2010) Modeled impact of anthropogenic warning on the frequency of intense Atlantic hurricanes. Science 327:454–458
Bengtsson L, Hodges K, Esch M, Keenlyside N, Kornblueh L, Luo J, Yamagata T (2007) How may tropical cyclones change in a warmer climate? Tellus 59A:539–561
Burpee R (1972) The origin and structure of easterly waves in the lower troposphere of North Africa. J Atmos Sci 29:77–90
Durán-Quesada A, Gimeno L, Amador J, Nieto R (2010) Moisture sources for Central America: Part I. Identification of moisture sources using a Lagrangian analysis technique. J Geophys Res doi:10.1029/2009JD012455
Enfield D, Alfaro E (1999) The dependence of Caribbean rainfall on the interaction of the tropical Atlantic and Pacific Oceans. J Clim 12:2093–2103
Enfield D, Mestas-Nuñez A, Trimble P (2001) The Atlantic multidecadal oscillation and its relation to rainfall and river flows in the continental U.S. Geophys Res Lett 28(10):2077–2080
Frank W, Young G (2007) The interannual variability of tropical cyclones. Mon Wea Rev 135:3587–3598
Goldenberg S, Landsea C, Mestas-Nunez A, Gray W (2001) The recent increase in Atlantic hurricane activity: Causes and Implications. Science 293:474–479
Gordon C, Cooper C, Senior C, Banks H, Gregory J, Johns T, Mitchell J, Wood R (2000) The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments. Clim Dyn 16:147–168
Gordon H, Rotstayn L, McGregor J, Dix M, Kowalczyk E, O’Farrell S, Waterman L, Hirst A, Wilson S, Collier M, Watterson I, Elliott T (2002) The CSIRO Mk3 climate system model CSIRO atmospheric research technical paper No 60:130
Gray W (1979) Hurricanes: Their formation, structure and likely role in the tropical circulation. In: Shaw D (ed) Meteorology over tropical oceans. Royal Meteorological Society, James Glaisher House, Grenville Place, Bracknell, Berkshire RG12 1BX:155–218
Gray W (1993) Chapter 5, seasonal forecasting, section 5.2, ENSO relationships with seasonal tropical cyclone activity. Global guide to tropical cyclone forecasting. World Meteorological Organization Technical Document WMO/TD No 560 Tropical Cyclone Programme Report No TCP-31
Gutowski W, Hegerl G, Holland G, Knutson T, Mearns L, Stouffer R, Webster P, Wehner M, Zwiers F (2008) Causes of observed changes in extremes and projections of future changes (Chapter 3). In Weather and climate extremes in a changing climate regions of focus: North America, Hawaii, Caribbean, and U.S. Pacific Islands. The US Climate Change Science Program: 81–116
IPCC (2007) Climate change (2007) The physical science basis. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt K, Tignor M and Miller H (eds) Contribution of Working Group I to the fourth assessment report of the intergovernmental panel on climate change. Cambridge University Press, Cambridge/New York
Kalnay E, Kanamitsu M, Kistler R, Collins W, Deaven D, Gandin L, Iredell M, Saha S, White G, Woollen J, Zhu Y, Chelliah M, Ebisuzaki W, Higgins W, Janowiak J, Mo K, Ropelewski C, Wang J, Leetmaa A, Reynolds R, Jenne R, Joseph D (1996) The NCEP/NCAR Reanalysis 40-year Project. Bull Am Meteorol Soc 77:437–471
Kim S, Flato G, Boer G, McFarlane N (2002) A coupled climate model simulation of the Last Glacial Maximum, Part 1: transient multi-decadal response. Clim Dyn 19:515–537
Kim S, Flato G, Boer G (2003) A coupled climate model simulation of the Last Glacial Maximum, Part 2: Approach to equilibrium. Clim Dyn 20:635–661
Knutson T, Sirutis J, Garner S, Vecchi G, Held I (2008) Simulated reduction in Atlantic hurricane frequency under twenty-first-century warming conditions. Nature Geosci 1:359–364
Kuleshov Y, Qi L, Fawcett R, Jones D (2008) On tropical cyclone activity in the Southern Hemisphere: Trends and the ENSO connection. Geophys Res Lett 35:L14S08
Liebmann B, Smith C (1996) Description of a complete (interpolated) outgoing longwave radiation dataset. Bull Am Meteorol Soc 77:1275–1277
Magaña V, Amador J, Medina S (1999) The Mid-Summer Drought over Mexico and Central America. J Clim 12:1577–1588
Mapes B, Warner T, Xu M, Negri A (2003) Diurnal patterns of rainfall in northwestern South American. Part I: Observations and context. Mon Wea Rev 131:799–812
Marsland S, Haak H, Jungclaus J, Latif M, Röske F (2003) The Max Planck Institute global ocean/sea-ice model with orthogonal curvilinear coordinates. Ocean Modell 5:91–127
Mora I, Amador J (2000) EL ENOS, el IOS y la Corriente en Chorro de Bajo Nivel en el Oeste del Caribe. Top Meteorol Oceanog 7(1):1–20. Available at the Instituto Meteorológico Nacional (http://www.imn.ac.cr/publicaciones/index.html) San José, Costa Rica
Rauscher S, Giorgi F, Diffenbaugh N, Seth A (2008) Extension and intesification of the Meso-American mid-summer drought in the twenty-first century. Clim Dyn 31:551–571. doi:10.1007/s00382–007–0359–1
Roeckner E, Bäuml G, Bonaventura L, Brokopf R, Esch M, Giorgetta M, Hagemann S, Kirchner I, Kornblueh L, Manzini E, Rhodin A, Schlese U, Schulzweida U, Tompkins A (2003) The atmospheric general circulation model ECHAM5. Part I: Model description. Max Planck Institute for Meteorology Report No 349:127 pp
Smith T, Reynolds R, Peterson T, Lawrimore J (2008) Improvements to NOAA’s historical merged land-ocean surface temperature analysis (1880–2006). J Clim 21:2283–2293
Taylor M, Alfaro E (2005) Climate of Central America and the Caribbean. In: Oliver J (ed) Encyclopedia of world climatology. Springer, The Netherlands, pp 183–189
Wang B, Chan J (2002) How strong ENSO events affect tropical storm activity over the Western North Pacific. J Clim 15:1643–1658
Wang C, Enfield D (2001) The tropical western hemisphere warm pool. Geophys Res Lett 28(8):1635–1638
Wang C, Enfield D (2003) A further study of the tropical western hemisphere warm pool. J Clim 16:1476–1493
Wang C, Lee S (2007) Atlantic warm pool, Caribbean low-level jet, and their potential impact on Atlantic hurricanes. Geophys Res Lett 34:L02703. doi:10.1029/2006GL028579
Wilks D (1995) Statistical methods in the atmospheric sciences. Cambridge University Press, San Diego, California, USA, 465 pp
Acknowledgements
The authors would like to recognize the partial support of the following projects during the course of this research, IAI-CRN-2050, UCR-VI 805-A7–002/805-A7 –755/805-A8–401/805-A8–606/805-A9-532/808-A9–070/808-A9–180. The authors also wish to acknowledge Hugo Hidalgo from the School of Physics and CIGEFI for his valuable comments and suggestions. An anonymous reviewer helped to clarify the manuscript. Jorge Espinosa from the Panama Canal Authority kindly provided meteorological data for the Gatun station. Adolfo Quesada assisted in the preparation of the Central America map and some data analysis. Ingrid Rivera, Natalie Mora, Mariam Briceño and Andre Stahl helped in the digital preparation of the manuscript.
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Amador, J.A., Alfaro, E.J., Rivera, E.R., Calderón, B. (2010). Climatic Features and Their Relationship with Tropical Cyclones Over the Intra-Americas Seas. In: Elsner, J., Hodges, R., Malmstadt, J., Scheitlin, K. (eds) Hurricanes and Climate Change. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9510-7_9
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