PPT-A Hybrid Nudging-Ensemble

Kalman Filter Approach to Data Assimilation in WRFDART Lili Lei 12 David R Stauffer 1 and Aijun Deng 1 1 The Pennsylvania State University 2 NCARASP Outline Introduction Methodology. for the NCEP GFS. Tom Hamill, for . Jeff . Whitaker. NOAA Earth System Research Lab, Boulder, CO, USA. jeffrey.s.whitaker@noaa.gov. Daryl Kleist, Dave Parrish and John . Derber. National Centers for Environmental Prediction, Camp Springs, MD, USA. Tanya L. Otte. 1. , Martin J. Otte. 1. , Jared H. Bowden. 2. , . and Christopher G. Nolte. 1. 1. U.S. Environmental Protection Agency, Research Triangle Park, NC. 2. University of North Carolina, Chapel Hill, NC. Bart Brashers, ENVIRON. Jared Heath Bowden, UNC. 3SAQS WRF Modeling Recommendations. Week long simulations for beginning of January and July. Tests included:. ECMWF vs. NAM Initial and Boundary Conditions. 4D-Ensemble-Var – a development path for data assimilation at the Met Office. Probabilistic Approaches to Data Assimilation for Earth Systems. , . BIRS, Banff, February 2013.. Andrew Lorenc. Outline of Talk. Update from Santa Cruz meeting. Matt Higgins. John Cassano. May 18, 2010. 1. SLP Bias Issue. As . mentioned at the Santa Cruz meeting, . WRF atmospheric simulations have shown significant high. SLP bias in the N. Pacific. recent. Hiatus . using. . IPSL-CM5A-LR. Didier Swingedouw, Juliette Mignot, Eric Guilyardi, Sébastien Nguyen, Lola . Ormières. . Hiatus and partial nudged simulations . Understanding dynamics explaining hiatus signal. NO NUDGING. NUDGING. Low-level mixed layer deeper . Westerly flow intrusion captured by nudging. 00 UTC 17 January. NO NUDGING. NUDGING. Too stable right above at the surface. Too warm aloft. CAP structure more realistic. grid nudging and stochastic . perturbatons. ATM 419. Spring 2016. Fovell. 1. New in this experiment. Simulation of the “Storm of the Century” (. Superstorm. 1993) snowstorm. Initialization with NNRP reanalysis. Contact. : . Dr. Christina Gravert . University . of. . Gothenburg. , . Department . of. Economics. christina.gravert@economics.gu.se . Tel: +46 (0)31 786 . 5252. Our Aim: “To investigate in cooperation with . NUDGING ALS POLITISCHES INSTRUMENT-. SE Aktuelle Themen der Wirtschaftspolitik . SS2017. Katrin . Pamperl. Überblick. 1. Einstieg ins Thema. - Der Sinn von . Nudging. - Was ist . Nudging. ?. - Arten von . system: implementation and test for hurricane prediction. Xuguang Wang, . Xu. Lu, . Yongzuo. . Li, Ting Lei. University of Oklahoma, Norman, OK. In collaboration with . Mingjing. Tong , Vijay . Tallapragada. A comparison of hybrid variational data assimilation methods in the Met Office global NWP system Andrew Lorenc 11 th Adjoint Workshop, Aveiro Portugal, July 2018 www.metoffice.gov.uk © Crown Copyright 2018, Met Office How . MyWorldAbroad. created a NUDGING PLAN. . !. . by Jean-Marc Hachey & Claire Seringhaus. . for . MyWorldAbroad. . Slide show to facilitate discussion about . MyWorldAbroad’s. nudging approach. Contact. : . Dr. Christina Gravert . University . of. . Gothenburg. , . Department . of. Economics. christina.gravert@economics.gu.se . Tel: +46 (0)31 786 . 5252. Our Aim: “To investigate in cooperation with .