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  • DYNAMO/CINDY/AMIE/LASP: Processes, Dynamics, and Prediction of MJO Initiation x
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Nick Guy and David P. Jorgensen

stationary ground- or ship-based weather radar, allowing for precipitation and cloud population statistics within about 100 km of each radar site. While this design resulted in extensive data at four unique points, the center of the quadrilateral lacked detailed radar observations. In addition, only the northwest corner (Gan Island) was able to accommodate two Doppler radars in close enough proximity to attain robust kinematic properties of precipitation systems. To alleviate this gap, the suite of

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Wen-wen Tung, Dimitrios Giannakis, and Andrew J. Majda

(including the MJO) from the symmetric and antisymmetric components of T B data, as well as the apparent connection between some of the modes in space and across diurnal to interannual time scales. The second part of this paper (Tung et al. 2014, manuscript to be submitted to J. Atmos. Sci. , hereafter Part II) studies the kinematic and thermodynamic fields associated with predominantly equatorially symmetric and off-equatorial convection in phase composites constructed through the MJO modes recovered

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Ji-Hyun Oh, Xianan Jiang, Duane E. Waliser, Mitchell W. Moncrieff, Richard H. Johnson, and Paul Ciesielski

WWEs during MJO2 will be examined. This study is structured as follows. Datasets and methods used for the analysis are discussed in section 2 . In section 3 , kinematic features of the MJOs are described. In section 4 , common features of WWE generation in the momentum budget associated with the MJO events are examined. Section 5 contains a further detailed investigation of WWEs during MJO2. A summary and conclusions are presented in section 6 . 2. Data and methods a. Data The ECMWF

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Elizabeth J. Thompson, Steven A. Rutledge, Brenda Dolan, and Merhala Thurai

. , 1993 : Kinematics and microphysics of the transition zone of the 10–11 June 1985 squall line . J. Atmos. Sci. , 50 , 3091 – 3110 , doi: 10.1175/1520-0469(1993)050<3091:KAMOTT>2.0.CO;2 . Brandes , E. A. , and K. Ikeda , 2004 : Freezing-level estimation with polarimetric radar . J. Appl. Meteor. , 43 , 1541 – 1553 , doi: 10.1175/JAM2155.1 . Brandes , E. A. , G. Zhang , and J. Vivekanandan , 2004 : Drop size distribution retrieval with polarimetric radar: Model and application

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Weixin Xu and Steven A. Rutledge

. Sci. , 40 , 1835 – 1850 , doi: 10.1175/1520-0469(1983)040<1835:WBOAMC>2.0.CO;2 . Gottschalck , J. , P. E. Roundy , C. J. Schreck III , A. Vintzileos , and C. Zhang , 2013 : Large-scale atmospheric and oceanic conditions during the 2011–12 DYNAMO field campaign . Mon. Wea. Rev. , 141 , 4173 – 4196 , doi: 10.1175/MWR-D-13-00022.1 . Guy , N. , and D. P. Jorgensen , 2014 : Kinematic and precipitation characteristics of convective systems observed by airborne doppler radar

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James H. Ruppert Jr. and Richard H. Johnson

, 2000 : The status of the Tropical Rainfall Measuring Mission (TRMM) after two years in orbit . J. Appl. Meteor. , 39 , 1965 – 1982 , doi: 10.1175/1520-0450(2001)040<1965:TSOTTR>2.0.CO;2 . Lin , J. L. , and Coauthors , 2006 : Tropical intraseasonal variability in 14 IPCC AR4 climate models. Part I: Convective signals . J. Climate , 19 , 2665 – 2690 , doi: 10.1175/JCLI3735.1 . Lin , X. , and R. H. Johnson , 1996a : Kinematic and thermodynamic characteristics of the flow over the

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Richard H. Johnson, Paul E. Ciesielski, James H. Ruppert Jr., and Masaki Katsumata

Oct for S. K . and 5–18 Dec for B. J .), were also utilized in the analyses. Sites with enhanced sounding frequency during the SOP are labeled. The previous study of the thermodynamic and kinematic fields during the DYNAMO special observing period (SOP) (October and November 2011) by Johnson and Ciesielski (2013) was based on a preliminary version of the sounding data, which did not include corrections for humidity sensor biases at all sites. This study uses the complete set of corrections for

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Richard H. Johnson and Paul E. Ciesielski

. Amer. Meteor. Soc. , 94 , 1871 – 1891 , doi: 10.1175/BAMS-D-12-00157.1 . 10.1175/BAMS-D-12-00157.1 Young , G. S. , S. M. Perugini , and C. W. Fairall , 1995 : Convective wakes in the equatorial western Pacific during TOGA . Mon. Wea. Rev. , 123 , 110 – 123 , doi: 10.1175/1520-0493(1995)123<0110:CWITEW>2.0.CO;2 . 10.1175/1520-0493(1995)123<0110:CWITEW>2.0.CO;2 Yuter , S. E. , and R. A. Houze Jr. , 1995 : Three-dimensional kinematic and microphysical evolution of Florida

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Weixin Xu, Steven A. Rutledge, Courtney Schumacher, and Masaki Katsumata

. , 48 , 1009 – 1018 , doi: 10.1109/TGRS.2009.2030322 . Gottschalck , J. , P. E. Roundy , C. J. Schreck III , A. Vintzileos , and C. Zhang , 2013 : Large-scale atmospheric and oceanic conditions during the 2011–12 DYNAMO field campaign . Mon. Wea. Rev. , 141 , 4173 – 4196 , doi: 10.1175/MWR-D-13-00022.1 . Guy , N. , and D. P. Jorgensen , 2014 : Kinematic and precipitation characteristics of convective systems observed by airborne Doppler radar during the life cycle of a

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Shuguang Wang, Adam H. Sobel, Fuqing Zhang, Y. Qiang Sun, Ying Yue, and Lei Zhou

: Development of an effective double-moment cloud microphysics scheme with prognostic cloud condensation nuclei (CCN) for weather and climate models . Mon. Wea. Rev. , 138 , 1587 – 1612 , doi: 10.1175/2009MWR2968.1 . Lin , J.-L. , and Coauthors , 2006 : Tropical intraseasonal variability in 14 IPCC AR4 climate models. Part I: Convective signals . J. Climate , 19 , 2665 – 2690 , doi: 10.1175/JCLI3735.1 . Lin , X. , and R. H. Johnson , 1996 : Kinematic and thermodynamic characteristics of the

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