Note:

ARPS input file arps.input and input files for other programs (e.g., arps.input for ADAS, arpsplt.input for ARPSPLT, etc.) contain the most up-to-date information on the control parameters for these programs. They are found in the ARPS package.

The updated chapters are for ARPS 5.0 and later and they are complementary to the original ARPS 4.0 User's Guide.

User's Guides for some ARPS preprocessing and post-preprocessing utilities are provided as supplements of the original ARPS User's Guide.

ARPS User's Guide (Version 4.0):

A comprehensive documentation on the officially released version of ARPS 4.0. It includes information for configuring ARPS and supporting programs, as well as the theoretical and numerical formulations of the model. It is supplemented by additional documentation listed on this page.

	Contents
Chapter 1	Overview of CAPS and ARPS Project
Chapter 2	Code Usage Restriction and Support
Chapter 3	Getting Started
Chapter 4	ARPS 4.0 Runtime/Configuration
Chapter 5	Model Structure Reference Guide
Chapter 6	Theorectical Formulation
Chapter 7	Map Projection, Model Grid Setup and Grid Nesting
	Figure 7.2
Chapter 8	Model Initialization and Preprocessing
	Figure 8.2
Chapter 9	Thermodynamic Recovery and Forward Assimilation
Chapter 10	Data I/O and Post-Processing Utilities
Chapter 11	ARPS Performance and Optimization on Single and Multiple Processor System
Chapter 12	The ZXPLOT Graphics Package
Chapter 13	Validation and Benchmark Cases
	Figure 13.1 Figure 13.5 Figure 13.6 Figure 13.7 Figure 13.8 Figure 13.9 Figure 13.12 Figure 13.13 Figure 13.17b
Chapter 14	Educational Program
Chapter 15	Answers to Frequently-Asked-Questions
Appendix A	Use of Operators
Appendix B	Coordinate Transformation
Appendix C	Description of ARPS Supported Terrain Data Sets
Appendix D	List of Model Variables and Their Definitions
	Software Usage Agreement
	Reference Cited
	Index

ARPS User's Guide (Latest updates for version 5.0 and later):

Draft Chapters (all other chapters are supplemented by ARPS Version 4.0 User's Guide on this page):

	Contents
Chapter 3	Getting Started
Chapter 4	ARPS 5.0 Runtime Configuration Reference Guide
Chapter 8	Model Initialization and Preprocessing

ARPS source code online:

ARPS source code contains detailed online documentation.

ARPS HTML'ed Code converted using F90toHTML ARPS5.2.8 ARPS5.2.4 ARPS 5.0IHOP5 ARPS 5.0IHOP3 ARPS 5.0IHOP2 ARPS 5.0Beta8		ARPS source code on line using ViewVC. ARPS CVS Repositories
		/ARPS/cgi-bin/viewvc.cgi

ADAS Documentation:

NOTE: Since ARPS version 5.2.2, all the following documents are included in the ARPS package within directory "docs/" from the root of the ARPS directory tree.

	Contents
ADAS User's Guide
ADAS Supplement 1	ASCII Input Data Formats
ADAS Supplement 2	Error and Blacklist Files Formats and Guidance
ADAS Supplement 3	Incremental Analysis Updating
ADAS Supplement 4	Phase Correcting Data Assimillation
ARPS4 Documentation	ADAS User's Guide in ARPS 4.3.2
CAPS ADAS Realtime Analysis Page	http://www.caps.ou.edu/ADAS.html

User's Guide for other programs:

User's Guides for some ARPS preprocessing and post-preprocessing utilities that are complementary to the ARPS User's Guide mentioned above. Click the links below to download.

88D2ARPS User's Guide
NIDS2ARPS User's Guide
MCI2ARPS User's Guide
ARPS2WRF User's Guide
ARPS3DVAR User's Guide
DMP version of ARPS User's Guide
ARPSEnKF User's Guide

Journal Publications:

The following papers give a more up-to-date description of the dynamics and physics of the ARPS, and present a detailed set of verifcaiton experiments as well as an example of real data prediction.

• Xue, M., K. K. Droegemeier, and V. Wong, 2000: The Advanced Regional Prediction System (ARPS) - A multiscale nonhydrostatic atmospheric simulation and prediction tool. Part I: Model dynamics and verification. Meteor. Atmos. Physics., 75, 161-193.
• Xue, M., K. K. Droegemeier, V. Wong, A. Shapiro, K. Brewster, F. Carr, D. Weber, Y. Liu, and D.-H. Wang, 2001: The Advanced Regional Prediction System (ARPS) - A multiscale nonhydrostatic atmospheric simulation and prediction tool. Part II: Model physics and applications. Meteor. Atmos. Physics., 76, 134-165.

The following manuscript outlines the current features of the ARPS system, presents two case studies in which tornadic thunderstorms were predicted at 2-3 km resolutions. It also describes the preliminary version of the ARPS 3DVAR system.

• Xue, M., D.-H. Wang, J.-D. Gao, K. Brewster, and K. K. Droegemeier, 2003: The Advanced Regional Prediction System (ARPS), storm-scale numerical weather prediction and data assimilation. Meteor. Atmos. Physics, 82, 139-170.

Paper describing the ARPS 3DVAR system:

• Gao, J., M. Xue, K. Brewster, and K. K. Droegemeier, 2004: A three-dimensional variational data analysis method with recursive filter for Doppler radars. J. Atmos. Oceanic Tech., 21, 457-469.

Papers applying ARPS 3DVAR and cloud analysis to thunderstorm initiation:

• Hu, M., M. Xue, and Keith Brewster, 2006: 3DVAR and cloud analysis with WSR-88D Level-II data for the prediction of the Fort Worth tornadic thunderstorms. Part I: Cloud analysis and its impact. Mon. Wea. Rev., In press.
• Hu, M., M. Xue, J. Gao and K. Brewster, 2006: 3DVAR and cloud analysis with WSR-88D Level-II data for the prediction of the Fort Worth tornadic thunderstorms. Part II: Impact of radial velocity analysis via 3DVAR. Mon. Wea. Rev., In press.

ADAS Related Publications:

• Keith Brewster, 1996:Application of a Bratseth Analysis Scheme Including Doppler Radar Data. Preprints, 15th Conf. On Weather Analysis and Forecasting, Norfolk, VA, August 1996, 92-95.
• Recent Advances in the Diabatic Initializaton of a Non-hydrostatic Numerical Model

A complete list of publications by CAPS scientists is found at CAPS site.