PRODUCTS & SOFTWARE

Zephyr North sells software for wind flow in complex terrain on behalf of the Meteorological Service of Canada (MSC, a service of Environment Canada). The titles are shown below. Note that the GLW software is not an MSC product.

Software List

Click on a product to see more informations about it

  • MS-Micro Version 3 - for estimating wind speed variations in complex terrain

  • MSFD-PC - new generation version of MS-MICRO

  • GLW (Guidelines for Windows) - for simple estimation of variations in wind speed due to small scale terrain features

  • ShelCorr - for estimating wind speed reduction due to sheltering from nearby obstacles

Detailed Software Descriptions and Pricing follow.

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Software Descriptions

MS-Micro/3

MS-Micro/3 is a numerical model for estimating wind speed variations in complex terrain. It runs on a microcomputer using the DOS operating system. In general, it can run on Windows in a DOS compatibility box or command line mode.

Main features
  • Three-dimensional steady-state surface boundary-layer flow
  • Spatial variations in terrain height and/or surface roughness
  • Results at any height or heights above ground
  • High spatial resolution at low computing cost
  • Neutral thermal stratification
  • Mixing-length turbulence closure
  • Horizontal scales of order 100 m to 10 km
  • Terrain slopes less than 0.3 to 0.5
  • Amplitude of roughness-length variations of order 10-3 to 103

Principal Uses
  • Wind energy site selection
  • Wind resource estimates
  • Wind loading estimates
  • Local climatological studies
  • Evaluation of representativeness of measured wind data.

Computer Configuration
  • Minimum desired:
    • IBM-compatible microcomputer; 8088 to Pentium processor
    • 640 KB memory
    • DOS 3.1 operating system (or most Windows systems)
    • math coprocessor
    • hard disk
  • Optional but useful:
    • DOS 3.3 or higher
    • virtual disk drive (using extended or expanded memory)
    • digitizer (or scanner plus appropriate raster to vector software)
    • EGA/VGA colour monitor
    • plotter

Supplied Software
  • Source and executable code
  • Routines for use with Calcomp 2000, 2300 or 9100 digitizers for preparing topographic and roughness input files
  • Routines for use with EGA/VGA monitor for quality-control and display

Plotting routines may require a graphics monitor and/or plotter and the separate purchase of commercial software - see below.

Plotting Options
  • The purchaser may supply a graphics package to plot files that are written in standard SURFER output - see below.
  • The purchaser may obtain the GEOGRAF drivers from:
    GEOCOMP Corporation, 342
    Sudbury Road,
    Concord MA 01742, USA
    Telephone: 1-508-369-8304,
    FAX 1-508-369-4392).
    Cost at November 1991: US$75 per driver plus shipping and handling.
  • The purchaser may obtain the SURFER graphics software from Golden Software Inc., P. O. Box 281, Golden CO 80402, USA (Telephone: 1-303-279-1021). Cost estimate is about US$500.

References
  • Taylor et al., 1983: Boundary-Layer Meteorology, 26, 169-189.
  • Walmsley et al., 1986: Boundary-Layer Meteorology, 36, 157-186.

Prices & Ordering

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MSFD-PC

MSFD-PC is a numerical model for estimating wind speed variations in complex terrain. It is a new generation model (Mixed Spectral Finite-Difference, Personal Computer version) that retains many of the advantages of its parent, MS-Micro/3.

Main features
  • Three-dimensional steady-state surface boundary-layer flow
  • Spatial variations in terrain height and/or surface roughness
  • Results at any height or heights above ground
  • High spatial resolution
  • Computation is much faster than a 3D Finite-Difference Model, but about 20 times slower than MS-Micro/3. Unlike MS-Micro/3, however, computation time is independent of the number of output levels.
  • Neutral thermal stratification; stable stratification version is being developed
  • Turbulence closure: mixing length, E- ε, or E-ε-τ
  • Horizontal scales of order 100 m to 10 km
  • Terrain slopes less than 0.3 to 0.5
  • Amplitude of roughness-length variations of order 10-3 to 103

Principal Uses
  • Wind energy site selection
  • Wind resource and turbulence estimates
  • Wind loading estimates
  • Local climatological studies
  • Evaluation of representativeness of measured wind data.

Whereas MS-Micro/3 is a practical model for applications, MSFD is primarily a research model. The higher-order turbulence closure options, however, provide information on turbulence and turbulent kinetic energy that is not available in MS-Micro/3.

Computer Configuration
  • Minimum desired:
    • compatible 386 (or, preferably 486 or Pentium) processor
    • 4MB RAM (preferably 8 MB) with memory manager
    • MS-DOS 5.0 or higher (including Windows DOS or Command Line interfaces)
    • math coprocessor
    • hard disk
    • printer

  • Optional but useful:
    • virtual disk
    • digitizer (or scanner plus appropriate raster to vector software)
    • plotter

Compiler

The Lahey F77L-EM/32 Version 5.0 Compiler was used to generate the executable code. Some extensions to the FORTRAN-77 Standard were used in the source code, but these exceptions are in the new FORTRAN-90 Standard.

Supplied Software
  • Executable code.
  • Routines for use with Calcomp 2000, 2300 or 9100 digitizers (for preparing topographic and roughness input files)
  • Routines for use with an EGA/VGA monitor (for quality-control and display).

Plotting routines may require a graphics monitor and/or plotter and the separate purchase of commercial software - see below.

Plotting Options
  • The purchaser may supply a graphics package to plot files that are written in standard SURFER output - see below.
  • The purchaser may obtain the SURFER graphics software from:
    Golden Software Inc.,
    P. O. Box 281,
    Golden CO 80402, USA
    Telephone: 1-303-279-1021.

    Cost estimate is about US$500.

References
  • Beljaars et al., 1987: Boundary-Layer Meteorol. 38, 273-303.
  • Karpik, 1988: Boundary-Layer Meteorol. 43, 273-286.
  • Walmsley and Padro 1990: Boundary-Layer Meteorol. 51, 169-177.

Prices & Ordering

GLW (Guidelines for Windows)

GLW (Guidelines for Windows) is a graphical implementation for Windows of the simple Guidelines developed in Taylor and Lee (1984) and Taylor et al. (1989) for estimating wind flow in simple complex terrain situations.

Main features
  • Estimation of wind speed, speed-up, and Σu profiles for complex terrain characterized by heterogeneous surface roughness and/or topography
  • Topographic features treated: 2D ridges, valleys, escarpments; 3D hills, basins; 2D rolling topography; 3D rolling topography; user-defined features
  • Wind speed input measurements can be defined at remote 'reference' site
  • Instantaneous computations allow immediate graphical feed-back - useful for teaching and sensitivity analysis
  • Comprehensive colour or black&white print output (Professional Version)
  • Output to graphics file (WMF or EMF) for easy inclusion in reports (Professional Version)

Principal Uses
  • Wind energy site selection
  • Wind resource estimates
  • Wind loading estimates
  • Local climatological studies
  • Evaluation of representativeness of measured wind data
  • Teaching: wind flow in complex terrain
  • Wind calculations for air-quality dispersion analysis

References
  • Taylor et al., 1983: Boundary-Layer Meteorology, 26, 169-189.
  • Walmsley et al., 1986: Boundary-Layer Meteorology, 36, 157-186.

Prices & Ordering

GLW is available in two versions:

  • BASIC - full-featured calculation and screen display. $240 ($CAN)
  • PROFESSIONAL - as for basic version; also includes print capability for high-resolution graphs and tables (to a Windows printer) and file output capability for WMF files for inclusion in reports. $440 ($CAN)
  • Click Here to view Price List below

ShelCorr

ShelCorr (Shelter Correction) is a graphical software implementation of the shelter correction model developed by Taylor and Salmon (1993) for estimating wind speed reduction due to sheltering from nearby obstacles. It runs under DOS. (A Windows 95/98/NT/3.1 version will be developed.)

Main features
  • Estimation of wind speed reduction by various types of obstacles
  • Obstacle types treated: 2D fences, dense lines of trees; 3D flat low buildings, ridged low buildings, flat cubical buildings, ridged cubical buildings, vertical cylinders (silos), hemispheres (domes), single tree, open line of trees
  • 'Porosity' of the obstacle is taken into account
  • Recommendations for wake moment coefficients are provided for various obstacle types
  • Comprehensive colour or black & white print output (Professional Version)§ Output to graphics file (WMF or EMF) for easy inclusion in reports (Professional Version)

Principal Uses
  • Wind resource estimate corrections
  • Wind loading estimate corrections
  • Local climatological study corrections
  • Corrections to historical wind data in sheltered locations
  • Evaluation of representativeness of measured wind data
  • Teaching sheltering effects
  • Corrections to wind calculations for air-quality dispersion analysis

References
  • Taylor, P.A. and J.R. Salmon, 1993: A Model for the Correction of Surface Wind Data for Sheltering by Upwind Obstacles, Journal of Applied Meteorology, 32(11), 1684-1694.

Prices & Ordering

ShelCorr is available in two versions:

  • BASIC - full-featured calculation and screen display. $240 ($CAN)
  • PROFESSIONAL - as for basic version; also includes print capability for high-resolution graphs and tables (to a Windows printer) and file output capability for WMF files for inclusion in reports. $440 ($CAN)
  • Click Here to view Price List below

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Price List

At present, there are seven software packages for wind flow in complex terrain. These packages have been developed in conjunction with the Meteorological Service of Canada of Environment Canada. They are as follows:

Package #1 - MS3DJH/3R
Canadian Orders: CAD$270.00
International Orders: CAD$320.00

  • This is the MS3DJH/3R model standard FORTRAN-77 code for mainframe computers (e.g., CDC, Cray, VAX, IBM). The code is distributed on magnetic tape and comes with a user's guide.
  • Please enquire if further details are needed.
  • References:
    Taylor et al., 1983: Boundary-Layer Meteorology, 26, 169-189.
    Walmsley et al., 1986: Boundary-Layer Meteorology, 36, 157-186.

Package #2 - MS3DJH/3R Model
Canadian Orders: CAD$200.00
International Orders: CAD$230.00

  • The same code as Package #1, but distributed on diskettes. Sample printed output files are included. This distribution format is intended for uploading from a microcomputer (IBM or compatible) to a mainframe.

Package #3 - MS-Micro/3 Model
Canadian Orders: CAD$130.00
International Orders: CAD$150.00

  • This is a modified version of MS3DJH/3R, intended for use on IBM (or compatible) microcomputers. Source code and stand-alone executable code are supplied. Output files are in Golden Software's SURFER format. Batch files are included to facilitate display or plotting with SURFER. Graphics routines are also provided for use with the GEOGRAF software. Alternatively, the user may use his/her own graphics display software by converting output files from SURFER format to the required format. A User's Guide is included.
  • Features :
    • Basic software written in Lahey FORTRAN F77L 4.10
    • Digitizing routines for Calcomp 2000, Drawing Board (2300 series) and 9100 written in Microsoft QuickBASIC 4.0
    • EGA routines written in Microsoft QuickBASIC 4.0
    • Plotting routines (SURFER software and/or GEOGRAF drivers may be required)See separate information sheet for further details.

Package #4 - Guidelines Model
Canadian Orders: CAD$130.00
International Orders: CAD$150.00

  • The model for estimating wind speed and turbulence intensity is intended for use on IBM (or compatible) microcomputers. The package consists of source programs in Microsoft QuickBASIC Version 4.0, stand-alone executable code (i.e., it is not necessary to have QuickBASIC unless you intend to modify the source code), documentation and sample output.
  • Reference:
    Walmsley, J. L., P. A. Taylor and J. R. Salmon, 1989: Climatological Bulletin, 23, 1, 3-14.

PACKAGE #5 - Profiles and Fluxes over the Sea
Canadian Orders: CAD$300.00
International Orders: CAD$350.00

  • This program for wind speed profiles and surface fluxes over the sea is written in Lahey FORTRAN F77L v.4.10 It computes profile parameters (u*, zo, etc.) and speed and temperature profiles from one level of wind data and the air-sea temperature difference. Estimates of errors are determined from input estimates of measurement uncertainty. Source and executable codes are provided. A documentation file is included, but there is no user's manual.
  • Reference :Walmsley, J. L., 1988: ATMOSPHERE-OCEAN, 26, 203-233.

Package #6 - Wind Correlation Model
Canadian Orders: CAD$130.00
International Orders: CAD$150.00

  • This program, written in Lahey FORTRAN F77L 4.10, computes a long-term wind climatology at one station based on a short-term period of simultaneous data at the station and a neighbouring station (for which the long-term climatology is known). Source and executable codes are provided. A documentation file and sample data preparation programs in F77L and QuickBASIC 4.0 are also included.
  • Reference :Walmsley, J. L. and D. L. Bagg, 1978: ATMOSPHERE-OCEAN, 16, 333-347.

Package #7 - MSFD-PC
Canadian Orders: CAD$300.00
International Orders: CAD$350.00

  • The MSFD (Mixed Spectral Finite-Difference) model designed for 'user-friendly' application on a 386 or 486 IBM-compatible personal computer. Executable code is provided. A documentation file is included.

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Shipping and Handling

Shipping Charges
Canadian Orders: CAD$15.00
International Orders: CAD$45.00

Handling Charges
Canadian Orders: CAD$10.00
International Orders: CAD$10.00

  • Canadian orders will be sent by first-class mail unless courier service (at the consignee's expense) is requested, in which case the $15.00 shipping charge will be waived.
  • For orders outside Canada, shipping will normally be via courier to expedite Customs clearance.
  • For shipment by courier, your full street address including postal code is needed. Note that couriers will not accept postal box numbers and are reluctant to accept addresses that include only a street name without a number as well.

Diskette Sizes
When ordering diskettes (packages 3 - 6), please specify diskette size and density: 5.25 inch (360 kB or 1.20 MB); 3.5 inch (720 kB or 1.44MB). [Note: 5.25 inch = 13.3 cm; 3.5 inch = 8.9 cm]

ORDERS WILL NORMALLY BE SHIPPED WITHIN ONE WEEK

Method of Payment
An invoice will be forwarded, usually with the shipment of the package. The preferable form of payment is by cheque or bank or postal draft made out in Canadian Dollars to:

Zephyr North Ltd.
850 LEGION RD UNIT 20
BURLINGTON ON L7S 1T5
CANADA

Telephone: 905-632-5622
Fax: 905-632-5428

NOTE: It is also possible to accept cheques in other currencies. The bank on which the cheque is issued should have a Canadian clearing bank.

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