kurt-hectic
https://api.github.com/users/kurt-hectic
Cultivated area with regular cover of low crops, or moderately open country with occasional obstacles (e.g. low hedges, single rows of trees, isolated farms) at relative horizontal distances of at least 20 obstacle heights. (zo 0.10)
Roughly open (Low crops; occasional large obstacles, x/H > 20)
roughlyOpen
Roughly open (Low crops; occasional large obstacles, x/H > 20)
2020-04-29T14:25:43.565Z
Featureless land surface without any noticeable obstacles and with negligible vegetation; e.g. beaches, pack ice without large ridges, morass, and snow-covered or fallow open country. (zo 0.005)
Smooth (Mud flats, snow; no vegetation, no obstacles)
smooth
Open sea or lake (irrespective of the wave size), tidal flat, snow-covered flat plain, featureless desert, tarmac and concrete, with a free fetch of several kilometers. (zo 0.0002)
Sea (open water, tidal flat, snow with fetch above 3 km
sea
The surface roughness is unknown.
unknown
unknown
Landscape totally and quite regularly covered with similar size large obstacles, with open spaces comparable to the obstacle heights; e.g. mature regular forests, homogeneous cities or villages. (zo 1.0)
Closed (Regular large obstacle COVER (suburb, forest))
closed
Recently-developed 'young' landscape with high crops or crops of varying height, and scattered obstacles (e.g. dense shelterbelts, vineyards) at relative distances of about 15 obstacle heights. (zo 0.25)
Rough (High crops; scattered obstacles, 15 < x/H < 20)
rough
None of the codes in the table are applicable in the context of this particular observation
inapplicable
inapplicable
Centres of large towns with mixture of low-rise and high-rise buildings. Also irregular large forests with many clearings. (zo ≥ 2)
Chaotic (City centre with high and low-rise buildings)
chaotic
2
Surface roughness (Davenport roughness classification)
2019-11-21T09:21:32.061Z
Level country with low vegetation (e.g. grass) and isolated obstacles with separations of at least 50 obstacle heights; e.g. grazing land without windbreaks, heather, moor and tundra, runway area of airports. (zo 0.03)
Open (Open flat terrain; grass, few isolated obstacles)
open
Surface roughness (Davenport roughness classification)
'Old' cultivated landscape with many rather large obstacle groups (large farms, clumps of forest) separated by open spaces of about 10 obstacle heights. Also low large vegetation with small interspaces, such as bushland, orchards, young densely-planted forest. (zo 0.5)
Very rough (Parkland, bushes; numerous obstacles, x/H ~ 10)
veryRough
2019-10-14T16:36:36.986Z
roughlyOpen
Cultivated area with regular cover of low crops, or moderately open country with occasional obstacles (e.g. low hedges, single rows of trees, isolated farms) at relative horizontal distances of at least 20 obstacle heights. (zo 0.10)
3
2020-04-29T14:26:21.352Z
2020-04-29T14:36:17.868Z
SurfaceRoughnessDavenport
kurt-hectic
https://api.github.com/users/kurt-hectic
3
2019-10-14T16:36:36.979Z
2019-11-21T09:21:32.061Z
Surface roughness (Davenport roughness classification)
Surface roughness (Davenport roughness classification)
Level country with low vegetation (e.g. grass) and isolated obstacles with separations of at least 50 obstacle heights; e.g. grazing land without windbreaks, heather, moor and tundra, runway area of airports. (zo 0.03)
Open (Open flat terrain; grass, few isolated obstacles)
3
2020-04-29T14:25:43.564Z
kurt-hectic
https://api.github.com/users/kurt-hectic
2020-04-29T14:26:21.35Z
2019-10-14T16:36:36.988Z
open
Chaotic (City centre with high and low-rise buildings)
2020-04-29T14:25:43.561Z
Centres of large towns with mixture of low-rise and high-rise buildings. Also irregular large forests with many clearings. (zo ≥ 2)
2020-04-29T14:26:21.347Z
kurt-hectic
https://api.github.com/users/kurt-hectic
2020-11-19T12:50:31.881Z
chaotic
4
2019-10-14T16:36:36.987Z
kurt-hectic
https://api.github.com/users/kurt-hectic
Landscape totally and quite regularly covered with similar size large obstacles, with open spaces comparable to the obstacle heights; e.g. mature regular forests, homogeneous cities or villages. (zo 1.0)
2019-10-14T16:36:36.983Z
3
2020-04-29T14:26:21.348Z
2020-04-29T14:25:43.562Z
Closed (Regular large obstacle COVER (suburb, forest))
closed
2019-10-14T16:36:36.985Z
2020-04-29T14:25:43.563Z
2020-04-29T14:26:21.349Z
3
inapplicable
kurt-hectic
https://api.github.com/users/kurt-hectic
None of the codes in the table are applicable in the context of this particular observation
inapplicable
Very rough (Parkland, bushes; numerous obstacles, x/H ~ 10)
3
2020-04-29T14:25:43.567Z
kurt-hectic
https://api.github.com/users/kurt-hectic
2019-10-14T16:36:36.99Z
veryRough
2020-04-29T14:26:21.355Z
'Old' cultivated landscape with many rather large obstacle groups (large farms, clumps of forest) separated by open spaces of about 10 obstacle heights. Also low large vegetation with small interspaces, such as bushland, orchards, young densely-planted forest. (zo 0.5)
unknown
kurt-hectic
https://api.github.com/users/kurt-hectic
3
2020-04-29T14:26:21.354Z
2020-04-29T14:25:43.567Z
2019-10-14T16:36:36.983Z
unknown
The surface roughness is unknown.
Featureless land surface without any noticeable obstacles and with negligible vegetation; e.g. beaches, pack ice without large ridges, morass, and snow-covered or fallow open country. (zo 0.005)
2020-04-29T14:25:43.566Z
2020-04-29T14:26:21.353Z
kurt-hectic
https://api.github.com/users/kurt-hectic
Smooth (Mud flats, snow; no vegetation, no obstacles)
smooth
3
2019-10-14T16:36:36.981Z
2020-04-29T14:26:21.352Z
3
Open sea or lake (irrespective of the wave size), tidal flat, snow-covered flat plain, featureless desert, tarmac and concrete, with a free fetch of several kilometers. (zo 0.0002)
Sea (open water, tidal flat, snow with fetch above 3 km
sea
kurt-hectic
https://api.github.com/users/kurt-hectic
2019-10-14T16:36:36.982Z
2020-04-29T14:25:43.565Z
2019-10-14T16:36:36.984Z
Rough (High crops; scattered obstacles, 15 < x/H < 20)
3
rough
kurt-hectic
https://api.github.com/users/kurt-hectic
Recently-developed 'young' landscape with high crops or crops of varying height, and scattered obstacles (e.g. dense shelterbelts, vineyards) at relative distances of about 15 obstacle heights. (zo 0.25)
2020-04-29T14:26:21.351Z
2020-04-29T14:25:43.564Z