Thiago Quirino and S.G. Gopalakrishnan, AOML/NOAA Hurricane Research Division, Miami, FLgopal@noaa.gov

Thiago Quirino and S.G. Gopalakrishnan, AOML/NOAA Hurricane Research Division, Miami, FLgopal@noaa.gov

1990

2005

Advanced Post-Processing, Analysis & Display System for High Resolution HWRF-X system

Advanced Post-Processing, Analysis & Display System for High Resolution HWRF-X system

Model & Post-Processor Development Team

ESRL JET, 2008

Robert Rogers, HRD/AOML, Miami

Kevin Yeh, CIMAS@HRD,AOML,Miami

Xuejin Zhang, CIMAS@HRD,AOML,Miami

Jian-Wen Bao, PSD, ESRL,boulder

Varsha Sainani,CIMAS@HRD,AOML,Miami

Altug Aksoy, HRD,AOML,Miami

Acknowledgements:

Frank Marks, HRD/AOML, Miami

Sim Aberson, HRD/AOML, Miami

Robert Atlas AOML, Miami

~ 600

~ 600

Motivation

1640 mb

184 mb

40 mb

• Driven by NOAA’s HFIP needs for multi-scale regional model operating down to 1 km resolution.

• Interpolation from rotated lat/lon to lat/lon grid is inefficient at high resolution of 1-3 km. Must be very careful!

• NMM-wrfpost uses “copygb” for interpolation without optimization taking several hours at 3-km resolution to complete! Frequent failures with addition of more variables.

• Need a general data reader and visualization tools for model to model, model to observation comparison and multi-model ensembles at highest resolution.

157 mb

1640 mb

157 mb

300mb

27:9

9:3

9:3:1

Post Processor: Diapost• One code, one executable all

available within WRF framework (WRF application program interface)

• Orders of magnitude faster than NMM-wrfpost (at 9 km takes <5 minutes for processing 3-h WRF output for 5 day forecast)

• Provides binary/flat file data, GrADS control files compatible with GrADS. Also ASCII track information.

• Grib files produced via HFIP output module.

• Can be linked to official tracker via output module.

Diapost.F90

Capabilities

• Horizontal: Native rotated lat/lon (minimum loss in information) and standard lat/lon and Cylindrical projection for inner core

• Vertical: Native hybrid, standard pressure and height

• Wind swaths, Deep-layer mean, Shear and other hurricane/environment specific variables

• Inner core details: CFADs and Hovmöller diagrams

HovmöllerHovmöller

Tangential Wind

Deep Layer Mean

Deep Layer Mean

Track/Wind swathTrack/Wind swath

Environmental Scale

Vortex Scale

Diapost Products

ShearShear

R-Z MeanR-Z Mean

5010

015

00

3530

40

50

60

70

45

55

65

distance (km)

dis

tan

ce (

km)

Data Mining & Display system

• Need advanced and unified framework for accessing and displaying observations, operational and research model data at highest resolution including ensemble output.

• User-interactive interface to mine data and generate display for hurricane applications.

• Input formats: NetCDF, ATCF and Grib*

• Diapost output is geo-referenced.

• Analogy: NOAA Operational Model Archive and Distribution System (NOMADS).

Moving nest Track Comparisons

Ensemble of TracksGlobal visualization

Observation comparisons

Work in progress

• More diagnostics on vortex scale (Doppler radar velocity and reflectivity).

• Diapost works on netCDF output, however can be extended to work with WRF-binary outputs.

• Visualization and data mining tool capable of reading Grib data as well (currently supports netCDF and ATCF format).

• Wish list under development at this meeting!