Results 31 to 40 of about 11,251 (232)

Observed Changes in the Lifetime and Amplitude of the Madden–Julian Oscillation Associated with Interannual ENSO Sea Surface Temperature Anomalies [PDF]

, 2007
The Madden-Julian Oscillation (MJO) is analysed using the reanalysis zonal wind and satellite outgoing longwave radiation-based indices of Wheeler and Hendon for the 1974-2005 period.
Adrian J. Matthews, An, Anderson, Anyamba, Bantzer, Benjamin Pohl, Deser, Fink, Gill, Goulet, Gray, Hendon, Hendon, Hendon, Hendon, Kalnay, Kanamitsu, Kemball-Cook, Kessler, Kinter, Knutson, Liebmann, Madden, Mantua, Matthews, Matthews, Pettitt, Rayner, Roundy, Salby, Slingo, Slingo, Trenberth, Vincent, Wang, Wheeler, Wu, Wu, Yasunari, Yasunari, Yasunari, Zhang, Zhang, Zhang, Zhang   +44 more
core   +3 more sources

Intraseasonal variability in the tropical diurnal cycle

, 2022
The relationship between large-scale intraseasonal variability in tropical convection and the local diurnal cycle on tropical islands is explored with observations and an idealized model. In part one, the impact of quasi-biweekly variability in the monsoon southwesterly winds on the precipitation diurnal cycle in the Philippines is examined using ...
Natoli, Michael B., author, Maloney, Eric D, advisor, Bell, Michael M., committee member, Randall, David A., committee member, Niemann, Jeffrey D., committee member   +4 more
openaire   +1 more source

Seasonal cycle of precipitation variability in South America on intraseasonal timescales [PDF]

, 2017
The seasonal cycle of the intraseasonal (IS) variability of precipitation in South America is described through the analysis of bandpass filtered outgoing longwave radiation (OLR) anomalies.
AM Grimm, B Liebmann, B Liebmann, Brant Liebmann, C Vera, Carolina S. Vera, CE Duchon, CFM Raupp, CS Vera, D Casarin, D Wilks, E Kalnay, FE Hirata, G North, George N. Kiladis, J Blázquez, JA Renwick, JN Paegle, Mariano S. Alvarez, MC Wheeler, MS Alvarez, MS Alvarez, Paula L. M. Gonzalez, PLM Gonzalez, PLM González, RA Madden, S Schubert, SA Solman, SB Cerne   +28 more
core   +2 more sources

Real-time extraction of the Madden-Julian oscillation using empirical mode decomposition and statistical forecasting with a VARMA model [PDF]

, 2008
A simple guide to the new technique of empirical mode decomposition (EMD) in a meteorological-climate forecasting context is presented. A single application of EMD to a time series essentially acts as a local high-pass filter.
Adrian J. Matthews, Ansley, Barnaby S. Love, Box, Coughlin, Duffy, Ferranti, Gareth J. Janacek, Gill, Goswami, Hall, Hendon, Hendon, Huang, Huang, Jones, Jones, Li, Liebmann, Lo, Madden, Maharaj, Maloney, Matthews, Mo, Salby, Shea, Waliser, Waliser, Waliser, Waliser, Wheeler, Wheeler, Wheeler, Woolnough, Wu, Zhang   +36 more
core   +1 more source

Zonally asymmetric component of summer surface temperature trends caused by intraseasonal time-scale processes

npj Climate and Atmospheric Science, 2023
Recent years have witnessed extreme heatwaves in Europe and western North America. This study shows that these regions stand out in the zonally asymmetric component of the long-term trend of boreal summer surface temperature, and that intraseasonal ...
Dong Wan Kim, Sukyoung Lee, Joseph P. Clark, Steven B. Feldstein   +3 more
doaj   +1 more source

Response of the West African Monsoon to the Madden–Julian Oscillation [PDF]

, 2009
Observations show that rainfall over West Africa is influenced by the Madden-Julian Oscillation (MJO). A number of mechanisms have been suggested: 1) forcing by equatorial waves; 2) enhanced monsoon moisture supply; and 3) increased African easterly wave
Lavender, Sally L., Matthews, Adrian J.
core   +1 more source

Is there regime behavior in monsoon convection in the late 20th century? [PDF]

, 2010
Mixture model techniques are applied to a daily index of monsoon convection from ERA‐40 reanalysis to show regime behavior. The result is the existence of two significant regimes showing preferred locations of convection within the Asia/Western‐North ...
A. G. Turner, A. Hannachi, Anderson, Charney, Goswami, Hannachi, Hannachi, Hannachi, Krishnamurthy, Krishnamurthy, Krishnan, Molteni, Palmer, Rajeevan, Rajeevan, Sperber, Sperber, Straus, Turner, Uppala, Wang, Webster, Woollings   +22 more
core   +1 more source

Modulation of station rainfall over the western Pacific by the Madden-Julian oscillation [PDF]

, 2005
Rainfall data from 140 stations in the PACRAIN network in the tropical western Pacific are analysed to assess the signal due to the Madden-Julian Oscillation (MJO). During northern winter, the station rainfall difference between the wet and dry phases of
Adrian J. Matthews, Bantzer, Barlow, Bond, Hall, Hartmann, Hoi Yee Yvonne Li, Knutson, Krishnamurthy, Liebmann, Madden, Morrissey, Mutai, Rui, Singh, Sperber, Wheeler, Xie   +17 more
core   +1 more source

Is wetter better? Exploring agriculturally-relevant rainfall characteristics over four decades in the Sahel

Environmental Research Letters, 2021
The semi-arid Sahel is a global hotspot for poverty and malnutrition. Rainfed agriculture is the main source of food and income, making the well-being of rural population highly sensitive to rainfall variability.
Miina Porkka, Lan Wang-Erlandsson, Georgia Destouni, Annica M L Ekman, Johan Rockström, Line J Gordon   +5 more
doaj   +1 more source

Ocean Rossby waves as a triggering mechanism for primary Madden-Julian events [PDF]

, 2012
The Madden–Julian Oscillation (MJO) is sporadic, with episodes of cyclical activity interspersed with inactive periods. However, it remains unclear what may trigger a Madden–Julian (MJ) event which is not immediately preceded by any MJO activity: a ...
Battisti, Chelton, Chelton, Donald, Ducet, Flatau, Fu, Fu, Fu, Giese, Han, Han, Harrison, Heimbach, Hendon, Hendon, Inness, Izumo, Jones, Kessler, Kessler, Klingaman, Lau, Le Traon, Liebmann, Madden, Madden, Marshall, Marshall, Matthews, Matthews, Matthews, Matthews, Matthews, Matthews, McCreary, McPhaden, Oliver, Rashid, Reynolds, Salby, Shinoda, Webber, Wheeler, Woolnough, Woolnough, Wunsch, Xie, Zhang   +48 more
core   +1 more source