Slide 1The Future of Data Assimilation: 4D-Var or Ensemble Kalman Filter? Eugenia Kalnay Department of Meteorology and Chaos Group University of Maryland Chaos/Weather group…

Slide 1Assimilation of T-TREC-retrieved wind data with WRF 3DVAR for the short-Term forecasting of Typhoon Meranti (2010) at landfall Xin Li 1, Yuan Wang 1, Jie Ming 1, Kun…

Slide 1From lab books to computational Earth science. Chris Hill, MIT – [email protected]@mit.edu Edinburgh, July 2007 Slide 2 Lab books A lab notebook is a primary record…

Slide 1Hybrid variational-ensemble data assimilation for the NCEP GFS Tom Hamill, for Jeff Whitaker NOAA Earth System Research Lab, Boulder, CO, USA [email protected]…

Slide 1 Atmospheric data assimilation at NCEP/EMC Andrew Collard, Daryl Keist, David Parrish, Ed Safford, Emily Liu, Manuel Pondeca, Miodrag Rancic, Lidia Cucurull, Haixia…

Slide 1 1 Hybrid variational-ensemble data assimilation (HVEDAS) High Impact Weather Working Group Workshop 24 February, 2011 – Norman, OK Daryl T. Kleist 1,3 Dave Parrish…

Slide 1 1 Comparison of GSI-based ETKF, LETKF and DART-EnKF Hybrids from the MMM Regional Hybrid Testbed Arthur P. Mizzi ([email protected]) NCAR/MMM HFIP Ensemble Design Subgroup…

Slide 1 GSI Hybrid EnKF-3DVAR Upgrade Components –GPS RO bending angle rather than refractivity –Inclusion of compressibility factors for atmosphere –Retune SBUV ob…

Slide 1 MPO 674 Lecture 20 3/26/15 3d-Var vs 4d-Var Ensemble Kalman Filters Want flow-dependent, dynamical covariances Several different types of Kalman filter exist, all…

Studying the Impact of Saharan Dust on Tropical Cyclone Evolution using WRF/Chem and EnKF Jianyu Liang (York U.) Yongsheng Chen (York U.) Zhiquan Liu (NCAR) Acknowledge:…