DAReS Presentations

Jeffrey Anderson Aug 2008: Using Small Ensembles in High Dimensions: Hierarchical Bayesian Approaches to Adaptive Ensemble Filters. (soon to be) Presented at the Joint Statistical Meetings 2008, Denver, CO, USA
Jeffrey Anderson July 2008: A non-gaussian ensemble filter for nonlinear models and discrete structures. [pdf] (soon to be) Presented at the University of Maryland, MD, USA
Kevin Raeder Jun 2008: Diagnosis of Noise in the FV core using DART. [pdf] Presented at the CCSM User Group meeting 2008, Breckenridge, CO, USA
Hui Liu Apr 2008: Improving Forecasts of Tropical Cyclones with Innovative GPSRO Satellite Observations [pdf] Presented at the Hurricanes session of the 2008 AMS, Orlando, FL, USA
Jeff Anderson Apr 2008: Adaptive Inflation for Ensemble Assimilation [pdf] Presented at the Workshop on Kalman Filtering, 4-9 April 2008, Marble Falls, TX, USA
Jeff Anderson Feb 2008: Using the DART-CAM Ensemble Data Assimilation System for Climate Model Development [pdf] Presented at the Atmosphere Model Working Group (AMWG), 14 February 2008, Boulder, CO, USA
Jeff Anderson Jan 2008: The Relation Between Ensemble Size and Expected Error in Ensemble Filter Data Assimilation [pdf] Presented at the 88th AMS Annual Meeting, 20--24 January 2008, New Orleans, Louisiana, USA
Josh Hacker Jan 2008: PBL State estimates with surface observations, a column model, and an ensemble filter: Probabilistic evaluation under various mesoscale regimes. [extended abstract] Presented at the 12th Conference on Integrated Observing and Assimilation Systems for Atmosphere, Oceans, and Land Surface (IOAS-AOLS), 20--24 January 2008, New Orleans, Louisiana, USA
Hui Liu Jan 2008: Multiple presentations at the 88th AMS Annual Meeting, 20--24 January 2008, New Orleans, Louisiana, USA
Impact of GPS Radio Occultation Observations on Ensemble Analyses and Forecasts of Typhoon Shanshan [ppt]
Improving Analyses and Forecasts of the Asian Monsoon with GPS Radio Occultation Refractivity Observations [ppt]
Nancy Collins Nov 2007: DART overview. [pdf] [animation1 (.mov)] [animation2 (.mov)] [animation3 (.mov)] talk presented at the NCAR booth of the Supercomputing 2007 Conference Reno, NV, USA
Tim Hoar Nov 2007: Data Assimilation Research Section - Overview [pdf] [animation1 (.mov)] [animation2 (.mpg)] Talk presented at the NCAR/Univ of Wyoming Retreat, Steamboat Springs, CO, USA
Hui Liu Aug 2007: The Impacts of Radio Occultation Data on analyses and prediction of the Monsoon and hurricanes using WRF ensemble forecast system. Talk presented at SPIE, San Diego, CA, USA
Hui Liu Jul 2007: Assimilation of GPS radio occultation refractivity with WRF using a non-local observation operator. [pdf] Poster presented at the IUGG, Data Assimilation session, Perugia, Italy.
Jeff Anderson Jun 2007: Data Assimilation for CAM - Research & Development. [pdf] Poster presented at the CCSM Summer Workshop, Breckenridge, CO, USA
David Dowell Jun 2007: Mesoscale WRF Surface-Data Assimilation: Spring 2007 Experiments at the National Severe Storms Laboratory [pdf] Talk presented at the WRF User's Workshop, Boulder, CO, USA
Jeff Anderson Jun 2007: Multiple talks presented at the 22nd Conference on Weather Analysis and Forecasting/18th Conference on Numerical Weather Prediction, Park City, UT, USA
DART: A Community Tool for Ensemble Data Assimilation Research and Development. [pdf],
An Introduction to Ensemble Kalman Filtering. [pdf], and
A Boxcar Kernel Filter for Assimilation of Discrete Structures (and Other Stuff). [pdf]
Josh Hacker Jun 2007: PBL state estimation with surface observations, a column model and an ensemble filter, Talk presented at the 22nd Conference on Weather Analysis and Forecasting/18th Conference on Numerical Weather Prediction, Park City, UT, USA
Nancy Collins May 2007: Parallel Implementation of Ensemble Filter Algorithms for Data Assimilation. [pdf] Poster presented at the LCI International Conference on High-Performance Clustered Computing, South Lake Tahoe, CA, USA
Kevin Raeder May 2007: Presentation and poster at the AGU Spring meeting 2007, Acapulco, Mexico.
Adaptive Spatially-varying Variance Inflation in an Ensemble Filter. [pdf]
A General Purpose Data Assimilation Facility: DART. [poster]
Josh Hacker Apr 2007: State estimation and predictability in the planetary boundary layer, Talk presented to the EGU General Assembly 2007, Vienna, Austria
Jeff Anderson Apr 2007: Using Observations to Estimate Climate Model Parameters [pdf] Talk presented at MSRI Symposium on Climate Change, Berkeley, CA, USA.
Jeff Anderson Mar 2007: The Data Assimilation Research Testbed: Powerful, Adaptive, and Fast Assimilation for Geophysical Applications. [pdf] Talk presented at NCAR, Boulder, CO, USA.
Ave Arellano Jan 2007: Constraining Tropospheric CO using Ensemble-based Data Assimilation [pdf] Talk presented to the AMS, San Antonio, TX, USA.
Jeff Anderson Jan 2007: Capabilities and Limitations of Ensemble Data Assimilation [pdf] Talk presented to the AMS, San Antonio, TX, USA.
Jeff Anderson Jan 2007: Using the DART-CAM Ensemble Data Assimilation System for Climate Model Development. [pdf] Talk presented to the Atmospheric Modeling Working Group (AMWG), Boulder, CO, USA.
D. Rostkier-Edelstein Jan 2007: PBL State Estimation with Surface Observations, a Column Model and an Ensemble Filter. Department seminar to The Department of Geophysics and Planetary Sciences, Tel-Aviv University, Israel
Hui Liu Dec 2006: Application of GPS radio occultation data in improving regional analyses of water vapor and temperature over tropical oceans. Talk presented at the China National Climate Center, Beijing, China
Hui Liu Dec 2006: Influence of COSMIC Satellite data in improving analyses over tropical oceans Talk presented at the AGU Fall meeting, San Francisco, CA, USA
Alexis Zubrow Oct 2006: EAKF-CMAQ: Development and initial evaluation of an Ensemble Adjustment Kalman Filter based data assimilation for CO. [Extended Abstract] Talk presented at the 5th Annual CMAS Conference, Chapel Hill, NC, USA
Hui Liu Oct 2006: Application of GPS radio occultation refractivity in improving tropical analyses of tempeature and water vapor. Talk presented at the First FORMSAT-3/COSMIC User Data Workshop, Boulder, CO, USA
D. Rostkier-Edelstein Oct 2006: PBL State Estimation with Surface Observations, a Column Model and an Ensemble Filter. Talk presented to the Environmental Sciences Division of the Israel Institute for Biological Research, Israel
Hui Liu Aug 2006: Assimilations of Global Positioning System radio occultation observations with an Ensemble filter in Atmospheric Prediction Models. Talk presented at the IEEE International Geoscience and Remote Sensing Symposium, Denver, CO, USA
D. Rostkier-Edelstein Aug 2006: Estimates of boundary layer profiles by means of ensemble-filter assimilation of near surface observations in a parameterized PBL - Application to transport and dispersion. Talk presented at the 10th Annual George Mason University Conference on Atmospheric Transport and Dispersion Modeling, George Mason University, Fairfax, VA, USA
Hui Liu Jun 2006: Exploring application of GPS RO data in improving analyses of T and Q in radiosonde sparse regions using WRF ensemble data assimilation system. Talk presented at the 7th WRF User Workshop, Boulder, CO, USA
Hui Liu Apr 2006: Exploring application of Radio Occultation measurements in Improving Analyses in traditional data sparse regions with WRF/DART ensemble data assimilation system. Talk presented at the 2nd Ensemble Data Assimilation Workshop, Austin, TX, USA
Josh Hacker Apr 2006: Retrieving PBL profiles with ensemble-filter assimilation: Experiments with real observations, uncovering model behavior, and finding parameter distributions. Talk presented at the 2nd Ensemble Data Assimilation Workshop, Austin, TX, USA
Hui Liu Dec 2005: Preliminary results from assimilation of GPS radio occultation data in WRF using an ensemble filter. [ppt]
Alain Caya 2005: Evaluation of an Ensemble Kalman Filter for WRF against a 3D-Var Assimilation System. [pdf]
Tim Hoar Oct 2004: An Operational-Quality Ensemble Assimilation System for NCAR's CAM Climate Model. [pdf] Talk presented at the "Workshop on Ensemble Methods" at the UK Met Office in Exeter.


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Presentations featuring DART: The Data Assimilation Research Testbed