1. Introduction

• 1.1 What is GEMPAK?
• 1.2 Workshop Specific Instructions

2. User Interface

• 2.1 Exercise #1 (An Introduction)
• 2.2 Help Pages
• 2.3 Default Files
• 2.4 Environmental Variables

3. Surface Data Mapping

• 3.1 SFMAP Input Parameters
• 3.2 Adjusting AREA and GAREA
• 3.3 SFPARM - Surface Parameters
• 3.4 DATTIM - Date and Time
• 3.5 Clearing the Map Window
• 3.6 Map Projections
• 3.7 Exercise #2 (Overlay Satellite Image)
• 3.8 Exercise #3 (Live Data)

4. Sounding Data Mapping

• 4.1 SNMAP
• 4.2 Filtering Stations
• 4.3 Wind Barbs and Arrows
• 4.4 Exercise #4 (Simple Sounding Map)
• 4.5 Exercise #5 (More Advanced Parameters)

5. GPMAP Overview

• 5.1 GPMAP Input Parameters
• 5.2 Exercise #6 (NIDS Display)
• 5.3 $MAPFIL (Map Database Variable)
• 5.4 Exercise #7 (Watches and Warnings)

6. Map Aesthetics

• 6.1 Colors
• 6.2 Color Enhancements
• 6.3 Exercise #8 (Temperature Color Map)
• 6.4 Device Drivers

7. Gridded Data Mapping

• 7.1 Grid Data Types
• 7.2 GDINFO - Grid Info
  • 7.2.1 Grid Navigation
• 7.3 Scalar Plotting
  • 7.3.1 GDCNTR Input Parameters
  • 7.3.2 Contouring and Filling
  • 7.3.3 Line Type
  • 7.3.4 Exercise #9 (Simple Gridded Contours)
  • 7.3.5 Exercise #10 (Simple Gridded Contours)
  • 7.3.6 GDMAP - Point Data
• 7.4 Vector Plotting
  • 7.4.1 GDWIND - Wind Vectors
  • 7.4.2 GDSTREAM - Streamlines
• 7.5 Plotting Scalars and Vectors
  • 7.5.1 GDPLOT2 Input Parameters
  • 7.5.2 Plotting Multiple Fields
  • 7.5.3 Exercise #11 (Scalars and Vectors)

8. Grid Diagnostics

• 8.1 In-Line Modifiers
• 8.2 Multuple Grid Files
• 8.3 Exercise #12 (Grid Diagnostics with Multiple Files and In-line Modifiers)

9. Grid Interpolation and Transformation

• 9.1 GDVINT - Vertical Coordinate Transformation
• 9.2 Exercise #13 (Interpolate to Theta Coordinates)

10. Importing Data into GEMPAK

• 10.1 Importing Raw Surface Data
• 10.2 Exercise #14 (Import Surface Data)

11. Objective Analysis

• 11.1 Barnes Analysis
• 11.2 Creating Grid Files
• 11.3 OAGRID Input Parameters
• 11.4 GDCFIL
• 11.5 Creating Grids from Surface Data
• 11.6 Creating Grids from Sounding Data
• 11.7 Exercise #15 (Objective Analysis)
• 11.8 Multi-Panel Displays
• 11.9 Exercise #16 (Surface File from Gridded Data)
  • 11.9.1 Creating the Surface File
  • 11.9.2 GDFSFC

12. Vertical Plotting

• 12.1 Sounding Data Cross Sections
  • 12.1.1 SNCROSS Input Parameters
  • 12.1.2 Exercise #17 (Countoured Upper-Air Cross-Section)
  • 12.1.3 Exercise #18 (Filled Upper Air Cross-Section)
• 12.2 Gridded Data Cross Sections
  • 12.2.1 Exercise #19 (Gridded Cross-Section)
  • 12.2.2 Exercise #20 (Nationwide Vorticity Advection Cross-Section)
  • 12.2.3 Exercise #21 (Gridded Data Vertical Profile)
• 12.3 Upper-Air Vertical Plotting
  • 12.3.1 Exercise #22 (Upper-Air Sounding)

13. Radar Programs

• 13.1 GDRADR - NEXRAD to Grid
  • 13.1.1 Exercise #23 (Create a NEXRAD N0Q Grid)
• 13.2 NEX2GINI - GINI File from NEXRAD Composite
  • 13.2.1 NEX2GINI Input Variables
  • 13.2.2 Exercise #24 (NEX2GINI N0Q Composite)
  • 13.2.3 Exercise #25 (NEX2IMG N0Q Composite)
• 13.3 GPNIDS - NEXRAD Level III Plotting
  • 13.3.1 GPNIDS Input Parameters
  • 13.3.2 Exercise #26 (Level III Reflectivity)
• 13.4 GPNEXR2 - NEXRAD Level II Plotting
  • 13.4.1 GPNEXR2 Input Paramters
  • 13.4.2 Exercise #27 (Level II Reflectivity)
• 13.5 GPVAD - NEXRAD Level III Wind Profile
  • 13.5.1 Exercise #28 (VAD Time Series)
• 13.6 NEXR2RHI - NEXRAD Level II Vertical Cross-Section
  • 13.6.1 Exercise #29 (Reflectivity RHI)

GEMPAK Program Index

• Surface Data Programs (SF)
• Sounding Data Programs (SN)
• Gridded Data Programs (GD)
• Objective Analysis Programs (OA)
• Graphics Programs (GP)
• Decoders (DC)

Additional Exercises

• GEMPAK Scripting Exercise (pdf)
• NLDN Animation
• Creating a Topographic Image
• Masking Grid Fields
• Hodograph
• Isentropic Analysis
• Trenberth Formulation

Other Documents

• Creating GEMPAK Map Files
• Adding Grids to NMAP2