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Getting started

  • System requirements
  • Fortran90 compiler
  • Locating netCDF library
  • Downloading DART
  • Compiling DART
  • Verifying installation

What is data assimilation?

  • Introduction to ensemble data assimilation
  • The Lorenz 63 model and its relevance to data assimilation
  • Data assimilation in DART using the Lorenz 63 model

What is DART?

  • What is DART?
  • The benefits of using DART
  • A brief history of DART
  • High-level data assimilation workflows in DART
  • DART’s design philosophy
  • Important capabilities of DART

Run DART with your model

  • Can I run my model with DART?
  • Instructions for porting a new model to DART
  • DART build system
  • Assimilation in a complex model
  • Message Passing Interface
  • Filters
  • Inflation
  • Required model_mod routines
  • Suggestions for a “simple” model
  • Suggestions for a “complex” model
  • How to test your model_mod routines
  • Controlling which files are output by filter
  • Advice for models with multiple vertical coordinate options
  • Data management in DART
  • Programs included with DART

Observations

  • Adding your observations to DART
  • How DART supports different types of observations: the preprocess program
  • How DART stores observations: observation sequence (obs_seq) files
  • Detailed structure of an obs_seq file
  • Creating an obs_seq file of synthetic observations
  • Creating an obs_seq file from real observations
  • Available observation converter programs
  • Manipulating obs_seq files with the obs_sequence_tool
  • The difference between observation TYPE and QUANTITY
  • Adding support for a new observation TYPE
  • Radiances

Observation Converters

  • DART Observations
  • Converter programs

Diagnostics

  • Checking your initial assimilation
  • Computing filter increments
  • Computing filter increments using a complex model
  • DART missing data value
  • DART quality control field
  • Examining the obs_seq.final file
  • MATLAB observation space diagnostics

Theory

  • DART Tutorial
  • Conditional probability and Bayes’ theorem
  • DART_LAB Tutorial
  • CLM-DART Tutorial
  • WRF-DART Tutorial

Models

  • Supported Models

Contributing and Community

  • Contributors’ guide
  • Requesting features and reporting bugs
  • Mailing list

Guide

  • DART Manhattan Differences from Lanai Release Notes
  • Forward Operators
  • Approaches for Common Situations
  • Parallelism Implementation Details
  • Other Parallelism Options
  • Netcdf Inflation Files
  • State Stucture
  • Filter async modes
  • Distributed State

Misc

  • Multi-Component CESM+DART Setup

Root

  • Copyright
  • Changelog
DART
  • Copyright
  • Edit on GitHub

Copyright

Copyright 2021 University Corporation for Atmospheric Research

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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© Copyright 2022, University Corporation for Atmospheric Research. Revision e17959db.

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