| Product Discipline 0 - Meteorological products | |
| Parameter Category 0 | Temperature |
| Parameter Category 1 | Moisture |
| Parameter Category 2 | Momentum |
| Parameter Category 3 | Mass |
| Parameter Category 4 | Short wave radiation |
| Parameter Category 5 | Long wave radiation |
| Parameter Category 6 | Cloud |
| Parameter Category 7 | Thermodynamic stability indices |
| Parameter Category 13 | Aerosols |
| Parameter Category 14 | Trace gases (e.g. Ozone, CO2) |
| Parameter Category 15 | Radar |
| Parameter Category 16 | Forecast Radar Imagery |
| Parameter Category 17 | Electrodynamics |
| Parameter Category 18 | Nuclear/radiology |
| Parameter Category 19 |
Physical atmospheric Properties |
| Parameter Category 20 | Atmospheric Chemical Constituents |
| Parameter Category 21 |
Thermodynamic Properties |
| 22-189 | Reserved |
| Parameter Category 190 | CCITT IA5 string |
| Parameter Category 191 | Miscellaneous |
| 192-254 |
Reserved for Local Use |
| Parameter Category 192 | Covariance |
| 255 | Missing |
| Product Discipline 1, Hydrologic products | |
| Parameter Category 0 | Hydrology Basic |
| Parameter Category 1 | Hydrology Probabilities |
| Parameter Category 2 | Inland Water and Sediment
Properties |
| 3-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |
| Product Discipline 2, Land Surface products | |
| Parameter Category 0 | Vegetation/Biomass |
| Parameter Category 1 |
Agricultural/aquacultural special products |
| Parameter Category 2 |
Transportation related products |
| Parameter Category 3 |
Soil Products |
| Parameter Category 4 | Fire Weather Products |
| Parameter Category 5 | Glaciers and Inland Ice Products |
| Parameter Category 6 | Urban Areas Products |
| 7-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |
| Product Discipline 3, Space products | |
| Parameter Category 0 | Image format Products |
| Parameter Category 1 |
Quantitative Products |
| Parameter Category 2 | Cloud Properties |
| Parameter Category 3 | Flight Rules Conditions |
| Parameter Category 4 | Volcanic Ash |
| Parameter Category 5 | Sea-surface Temperatur |
| Parameter Category 6 | Solar radiation |
| 7-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| Parameter Category 192 | Forecast Satellite Imagery Products |
| 255 | Missing |
| Product
Discipline 4, Space Weather products |
|
| Parameter Category 0 | Temperature |
| Parameter Category 1 |
Momentum |
| Parameter Category 2 |
Charged Particle Mass and Number |
| Parameter Category 3 |
Electric and Magnetic Fields |
| Parameter Category 4 |
Energetic Particles |
| Parameter Category 5 |
Waves |
| Parameter Category 6 |
Solar Electromagnetic Emissions |
| Parameter Category 7 |
Terrestrial Electromagnetic Emissions |
| Parameter Category 8 |
Imagery |
| Parameter Category 9 |
Ion-Neutral Coupling |
| Parameter Category 10 |
Space Weather Indices |
| 11-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |
| Product Discipline 10, Oceanographic products | |
| Parameter Category 0 | Waves |
| Parameter Category 1 |
Currents |
| Parameter Category 2 |
Ice |
| Parameter Category 3 |
Surface Properties |
| Parameter Category 4 |
Sub-surface Properties |
| 5-190 | Reserved |
| Parameter Category 191 | Miscellaneous |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |
| Product Discipline 20, Health and Socioeconomic impacts | |
| Parameter Category 0 | Health Indicators |
| Parameter Category 1 | Epidemiology |
| Parameter Category 2 | Socioeconomic Indicators |
| Parameter Category 3 | Renewable Energy Sector |
| 4-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |
| Notes: 1. By convention, the flux sign is positive if downward. 2. When a new parameter is to be added to Code table 4.2 and more than one category applies, the choice of category should be made base on the intended use of product. The discipline and category are an important part of any product definition, so it is possible to have the same parameter name in more than one category. For example, "Water Temperature" in discipline 10 (Oceanographic Products), category 4 (sub-surface properties) is used to reporting water temperature in the ocean or open sea, and is not the same as "Water temperature" in discipline 1 (Hydrological Products), category 2 (Inland water and sediment properties) which is used for reporting water temperature in freshwater lakes and rivers. |