Weather Research and Forecasting (WRF) Portal

1
Weather Research and Forecasting (WRF) Portal
Elias Rodriguez School of Computer Engineering
Computer Science and Electrical
EngineeringPolytechnic University of Puerto Rico
Seychelles Martinez School of Computing and
Information Sciences Florida International
University
REU Summer Program
2
Outline

• Introduction
• Motivation
• Description of the project
• Accomplishment
• Goals
• Questions

3
Introduction

• What is WRF?
• What is Ensemble Forecasting?
• How does the system work?
• What is the scope of what we are doing?

4
Introduction

• What is WRF?
• Weather Research and Forecasting
• Developed by National Center for Atmospheric
  Research (NCAR)
• Widely accepted in meteorology

5
Introduction

• What is Ensemble Forecasting?
• Purpose account for errors in forecasting
  system due to chaotic nature of atmospheric
  dynamics
• Different models created in parallel with
  different initial conditions.
• Models, then, combined to produce a
  probabilistic forecast

6
Introduction

• How does the system work?
• Main objective of the overall project
• Grid enables rapid computation of parallel
  tasks.

7
Architectural Overview of the Overall Project
Meteorologist
Meteorologist
BSC
FIU
Web-Based Portal
Web-Based Portal
Peer-to-peer Protocols
Job-Flow Manager
Job-Flow Manager
Meta-Scheduler
Meta-Scheduler
Resource Policies
Resource Policies
Local scheduler
Local scheduler
Local scheduler
Local scheduler
Local Resources
Local Resources
Local Resources
Local Resources
8
Introduction

• What is the scope of what we are doing?
• The WRF Web Portal
• Front End
• Ease of use for meteorologists

9
Motivation

• Help meteorologist focus on their science
• Speed up Ensemble Forecasting

10
System Architecture

• Portal Used by meteorologist. Front End of
  system
• JFM Receives workflow and decides what can be
  run in parallel
• Meta-Scheduler Assigns jobs to different
  resources

11
Web-Portal SubArchitecture
12
Workflow Architecture
13
What we know about files

• Input Files
• wrfbdy
• wrfinput
• namelist
• Output File
• netcdf file

14
What we know about files
Real.exe
15
What we know about files
16
(No Transcript)
17
(No Transcript)
18
Meteorologist Profile

• Create new Ensemble Forecasts
• Create new Single Run
• Show the list of Ensemble Configurations
• The status of the runs
• Visualize the results

19
(No Transcript)
20
Ensemble Run

• To run an ensemble, the portal send a workflow to
  the JFM.
• Specify where the real.exe is
• Specify what the perturbation function is
• Generate the ensemble members
• Specify the aggregation function

21
(No Transcript)
22
Research-Run

• A single run using old storm data as initial data
• Change certain WRF modeling variables
• Examples
• physics-package
• cloud cover
• snow cover
• turbulence mixing

23
Research-Run cont.

• Run output then compared against actual storm
  attributes
• Compare results
• Projected track vs. actual track
• Projected intensity vs. actual intensity
• Etc.

24
Research-Run Objectives

• Objectives
• Upload files from WPS
• Edit namelist for their research goals
• Run their submission
• Get the results of the simulation

25
Research-Run Objectives

• Future Objective
• Certain types of studies only view and modify
  variables that apply to the specific study
• Open a previous study and resubmit with different
  variables/options selected

26
Portal Input Design Decision

• Pre-Processing
• Who does it and how much do they do?
• Tasks
• WPS
• Used to create the mother domain and gets the
  weather data from an archive or uses the current
  weather conditions.
• Real.exe
• Used on WPS output to create files needed to run
  WRF simulations. A fair amount of processing
  power needed.

27
Portal Input Design Decision

• Options
• User does all pre-processing
• User runs WPS and Real.exe locally
• User does half and Portal does half
• User runs WPS local and real.exe on portal
• Portal does all pre-processing
• Portal has WPS functionality built in and
  real.exe runs on portal

28
Portal Input Design Decision

• Pros

• Cons

1. Light design burden, no real.exe processing time
2. User only needs WPS but does not need WRF
3. User only needs web access

1. User needs WRF installed and CS knowledge
2. Real.exe processing time, and User still needs
   WPS
3. Portal design really complex, and real.exe
   running time is done on Portal resources

29
Portal Input Design Decision

• Decision
• Option 2 User runs WPS, and the portal runs
  real.exe
• This will relieve the burden of having a WRF
  installation from the user
• A good separation of functionality
• Option 3 is a future goal

30
Database Diagram
31
(No Transcript)
32
Project Plan

• Develop the API
• Simulate an ensemble dummy run from the Portal
• Write the final paper.

33
References

• Transparent Grid Enablement of Weather Research
  and Forecasting
• S. Masoud Sadjadi, Liana Fong, Rosa M. Badia,
  Javier Figueroa, Javier Delgado, Xabriel J.
  Collazo-Mojica, Khalid Saleem, Raju Rangaswami,
  Shu Shimizu, Hector A. Duran Limon, Pat Welsh,
  Sandeep Pattnaik,Anthony Praino, David Villegas,
  Selim Kalayci, Gargi Dasgupta, Onyeka Ezenwoye,
  Juan Carlos Martinez, Ivan Rodero, Shuyi Chen,
  Javier Muñoz, Diego Lopez, Julita Corbalan, Hugh
  Willoughby, Michael McFail,Christine Lisetti, and
  Malek Adjouadi1
• Towards a Self-Configurable Weather Research and
  Forecasting System
• By Khalid Saleem, S. Masoud Sadjadi, Shu-Ching
  Chen

34
Questions ?