NCAR's Data Assimilation Research Section
The NCAR Data Assimilation Initiative was founded to create and to then lead a research community for data assimilation where individuals benefit from sharing ideas, methodologies, and software tools as well as access to a data assimilation testbed. NCAR has a large number of researchers for whom data assimilation is an essential part of their ongoing or planned research. New developments in theoretical data assimilation and in software engineering are making collaborations between data assimilation experts, modelers, observational specialists and statisticians easier and more productive than was possible in the past. The maturation of the Initiative resulted in the Data Assimilation Research Section (DAReS): a component of the Institute for Mathematics Applied to Geosciences. The primary goal of DAReS is to continue to advance the theory and practice of ensemble data assimilation. Also, DAReS accelerates the progress of many other NCAR projects by providing a centralized data assimilation expertise which can be coordinated with existing observational and modeling expertise.
Ensemble Filters for Geophysical Data Assimilation
Click on Image to Download DART
The Data Assimilation Research Testbed Facility : DART
The Data Assimilation Research Testbed (DART), is a
software environment for making it easy to match a variety of data
assimiliation methods to different numerical models and different kinds of
DART has been through the crucible of many compilers and platforms.
It is ready for friendly use and has been used in several field programs
requiring real-time forecasting. The DART source code is distributed through
our anonymous subversion server (meaning you don't need an account on our
machines) after you fill out a trivial form asking for your name, email
address, and institution. We need to gather summary statistics to
maintain an email list should there be an important update and to
help us quantify our impact on the community.
This is an ultra-low-traffic email list.
We have never sent an email to the entire list!
Please be assured we will keep your email address confidential.
The "Lanai" version of DART was released in December 2013 and contains many stable bugfixes and improvements over the Kodiak version. The DART source code and documentation can be downloaded at www.image.ucar.edu/DAReS/DART/DART_download. The most current version of the documentation is (always) distributed with the code, but if you want to take a look before downloading, visit the Lanai release document.
The most current version of the documentation is distributed with the code, but if you want an idea of what it takes to build DART and run experiments before downloading, look at the Getting Started page.
Schematic of Ensemble Data Assimilation - from the DAReS Perspective
We regularly give tutorials on Ensemble Data Assimilation
IMAGe Theme of the Year (2015):
The main page for the Workshop and Tutorial is available [here].
WRF/DART Tutorial at NCAR: 22 Jan 2014
A WRF/DART Ensemble Data Assimilation Tutorial was taught on 22 January 2014 at NCAR in Boulder, Colorado.
- Introduction to ensemble DA
- Using DART with simple models
- Running the WRF/DART assimilation system
- Using WRF/DART analysis tools
- Examples of WRF/DART ensemble analyses and forecasts
Our central email address is firstname.lastname@example.org, which
will hit 'everyone' and find its way to the best person.
The categories that follow are not set in stone, everyone has some expertise in all areas.
|Jeff Anderson||Tim Hoar||Nancy Collins||Kevin Raeder||Glen Romine|
|jla @ ucar . edu||thoar @ ucar . edu||nancy @ ucar . edu||raeder @ ucar . edu||romine @ ucar . edu|
|postal address||"overnight" deliveries||electronic methods|
|Silvia Gentile||Silvia Gentile||sgentile @ ucar . edu|
|NCAR||NCAR||303 497 2480|
|P.O. Box 3000||1850 Table Mesa Dr.||303 497 2483 (FAX)|
|Boulder, CO 80307-3000||Boulder, CO 80305|