IRIS EMC

Proposed CVM-H Model

Characteristics of the NetCDF version of CVM-H is:

• Coverage Region is CVM-H Low Resolution region
  • dataset.geospatial_lat_min = 30.95
  • dataset.geospatial_lat_max = 36.613
  • dataset.geospatial_lat_units = "degrees_north"
  • dataset.geospatial_lat_resolution = 0.01
  • dataset.geospatial_lon_min = -120.862
  • dataset.geospatial_lon_max = -113.333
  • dataset.geospatial_lon_units = "degrees_east"
  • dataset.geospatial_lon_resolution = 0.01
  • dataset.geospatial_vertical_min = -50.0
  • dataset.geospatial_vertical_max = 4.0
  • dataset.geospatial_vertical_units = "km"
  • dataset.geospatial_vertical_resolution = 0.5
  • dataset.geospatial_vertical_positive = "up"

• Variable Names, Units, and Ranges
  • vp.long_name = "P Velocity"
  • vp.display_name = "P Velocity (m/s)"
  • vp.units = 'm.s-1'
  • vp.valid_range = 0.0,8000.0
  • vp.missing_value = -99999.00
  • vs.long_name = "S Velocity"
  • vs.display_name = "S Velocity (m/s)"
  • vs.units = 'm.s-1'
  • vs.valid_range = 0.0,8000.0
  • vs.missing_value = -99999.00
  • rho.long_name = "Density"
  • rho.display_name = "Density (kg/m^3)"
  • rho.units = 'kg.m-3'
  • rho.valid_range = 0.0,8000.0
  • rho.missing_value = -99999.00

• Resolution is 1km x 1km x .5km (depth)
  • n_lon_steps = 754
  • n_lat_steps = 566
  • n_z_steps = 109
  • total_pts = 46,517,276

• CVM-H flags used in model extraction:
  • cvmh_param=USE_1D_BKG,True
  • cvmh_param=USE_GTL,False

CVM-H Model Bundle Components

• CVM-H Model Description
• netCDF CF-1.6 Metadata included in netCDF file
• Shaw et al (2015) USR paper describing model
• NetCDF file to be contributed to IRIS - (Warning: 544Mb)

IRIS Earth Model Collaboration Website

• IRIS EMC Homepage
• IRIS EMC Model contributing Guide

NetCDF Guidelines

• netCDF format guidelines

IDV based Comparisons of SCEC models

• Comparisons of CVM-H, CVM-S4, CVM-S4.26 using IDV

Related Entries

• UCVM
• CVM-H