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Abby Stevens, Rebecca Willett, Antonios Mamalakis, Efi Foufoula-Georgiou, Alejandro Tejedor, James T. Randerson, Padhraic Smyth, and Stephen Wright

drivers of SWUS precipitation (e.g., ENSO) explain just a small fraction of the interannual variability of precipitation totals, which in some cases are determined by a small number of winter storms ( Dettinger et al. 2011 ; Dettinger and Cayan 2014 ). Moreover, it is known that the ENSO relationship with SWUS climate undergoes multidecadal fluctuations ( McCabe and Dettinger 1999 ; Yu et al. 2012 ), with many recent studies pointing out that it has been losing strength in the recent decades, while

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Clément Guilloteau, Antonios Mamalakis, Lawrence Vulis, Phong V. V. Le, Tryphon T. Georgiou, and Efi Foufoula-Georgiou

. Control Inf. , 3 , 185 – 210 , https://doi.org/10.1093/imamci/3.2-3.185 . 10.1093/imamci/3.2-3.185 Platzman , G. W. , 1968 : The Rossby wave . Quart. J. Roy. Meteor. Soc. , 94 , 225 – 248 , https://doi.org/10.1002/qj.49709440102 . 10.1002/qj.49709440102 Power , S. , F. Tseitkin , V. Mehta , B. Lavery , S. Torok , and N. Holbrook , 1999 : Decadal climate variability in Australia during the twentieth century . Int. J. Climatol. , 19 , 169 – 184 , https://doi.org/10

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Giuseppe Mascaro

distributions of rainfall maxima at different subdaily durations to those estimated at daily scale. While the theoretical background of scaling models has been outlined more than two decades ago (e.g., Burlando and Rosso 1996 ), these techniques have been mainly applied for analyses at distinct locations, because of the lack of networks of long-term high-resolution rain gauges. Notable exceptions are the studies by Yu et al. (2004) , Borga et al. (2005) , Bara et al. (2010) , and Blanchet et al. (2016

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Lisa Milani, Mark S. Kulie, Daniele Casella, Pierre E. Kirstetter, Giulia Panegrossi, Veljko Petkovic, Sarah E. Ringerud, Jean-François Rysman, Paolo Sanò, Nai-Yu Wang, Yalei You, and Gail Skofronick-Jackson

precipitation has been estimated from satellites for more than five decades with accuracy improving over time ( Tang et al. 2020 ). However, concerted efforts to estimate falling snow from spaceborne platforms have only been undertaken in the last 1–2 decades ( Casella et al. 2017 ; Kongoli et al. 2003 ; Kulie and Bennartz 2009 ; Meng et al. 2017 ; Rysman et al. 2019 ; Skofronick-Jackson et al. 2004 , 2019 ). Retrieving snowfall from space is necessary to globally quantify water resources transported

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Veljko Petković, Marko Orescanin, Pierre Kirstetter, Christian Kummerow, and Ralph Ferraro

supplement to PMW observations. It is therefore important to assess if convective/stratiform information can be inferred from the passive microwave information itself. Yet, despite sustained, decades-long effort to identify a robust link between PMW observations and convective fraction, only a few regression methods with modest skill are available. These methods largely utilize the spatial variability of the brightness temperature (Tb) of the high-frequency channels (e.g., 30 GHz and above). Thus, the

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Efi Foufoula-Georgiou, Clement Guilloteau, Phu Nguyen, Amir Aghakouchak, Kuo-Lin Hsu, Antonio Busalacchi, F. Joseph Turk, Christa Peters-Lidard, Taikan Oki, Qingyun Duan, Witold Krajewski, Remko Uijlenhoet, Ana Barros, Pierre Kirstetter, William Logan, Terri Hogue, Hoshin Gupta, and Vincenzo Levizzani

Twelfth International Precipitation Conference (IPCI2) What : Scientists from more than 60 countries met at the Twelfth International Precipitation Conference (IPCI2) to discuss the latest advances in precipitation estimation, prediction, and impact assessment and contemplate the challenges and opportunities that lie ahead. When : 19–21 June 2019 Where : Irvine, California Precipitation exhibits a large variability over a wide range of space and time scales: from seconds to years and decades in

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Allison E. Goodwell

positive PDO correlations in other regions in the summer, such as in Missouri, northern Michigan, and the Pacific Northwest. Meanwhile, the AMO is mainly negatively correlated with I 4 , and more correlations are spread over the country. These negative correlations are particularly clustered in the eastern United States during the summer. The PDO and the AMO have been linked to climate variability in the Americas on decadal to multidecadal time scales ( Carvalho 2020 ). Particularly, a negative

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Phu Nguyen, Mohammed Ombadi, Vesta Afzali Gorooh, Eric J. Shearer, Mojtaba Sadeghi, Soroosh Sorooshian, Kuolin Hsu, David Bolvin, and Martin F. Ralph

1. Introduction Providing consistent and accurate precipitation measurements remains one of the most challenging tasks facing the weather and climate community. Rain gauge, radar, and satellite are the primary instruments for measuring precipitation. Rain gauge observations represent the most direct method for precipitation measurement and provide the longest historical records ( Kidd and Levizzani 2011 ; Mahmoud et al. 2018 ); however, the variability of precipitation across all spatial and

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