Table 1.
Different SOG with corresponding codes of the DWD and its descriptions for visual observations.
| State of ground without deposits | DWD code | Description |
|---|---|---|
| dry | E 0 | state of soil after long period without precipitation, no bonding of soil particles visible, presence of dust |
| moist | E 1 | grains of sandy soils bonded together, silty soils show larger formable aggregates |
| wet | E 2 | water puddles accumulate on the ground, soil can be impressed easily, dents fill with water |
| flooded | E 3 | large parts of the soil are covered with water, which cannot drain away |
| frozen | E 4 | former wet soils at temperatures below 0 °C, soil hard and cannot be impressed |
| ice-covered | E 5 | liquid precipitation falls onto cold surface or under-cooled precipitation falls onto ground and freezes, also melt water and poodles can lead to ice cover during cooling |
| dust-covered | E 6 | loose cover with dust or sand |
| very dry | E 9 | shrinking cracks observable mostly on silty or clayey soils |
| State of ground with deposits | ||
| graupel or hail | EE 0 | more than 50% of surface covered with hail, graupel, ice or snow grains |
| snow | EE 1 | more than 50% of surface covered by snow |
| hoar | EE 2 | discharged precipitations of hoar onto ground |
| thaw | EE 3 | discharged precipitations of thaw onto ground |