|landscape||_landscape_||An integer between 0-7 to calculate z0 (roughness).
You can find full description of the landscape in Table I at this
0 > '0.0002' # sea. Open sea or lake (irrespective of wave size),
tidal flat, snow-covered flat plain, featureless desert, tarmac and
concrete, with a free fetch of several kilometres
1 > '0.005' # smooth. Featureless land surface without any noticeable
obstacles and with negligible vegetation; e.g. beaches, pack ice without
large ridges, marsh and snow-covered or fallow open country.
2 > '0.03' # open. Level country with low vegetation (e.g. grass)
and isolated obstacles with separations of at least 50 obstacle heights;
e.g. grazing land without wind breaks, heather, moor and tundra,
runway area of airports. Ice with ridges across-wind.
3 > '0.10' # roughly open. Cultivated or natural area with low crops
or plant covers, or moderately open country with occasional obstacles
(e.g. low hedges, isolated low buildings or trees) at relative horizontal
distances of at least 20 obstacle heights
4 > '0.25' # rough. Cultivated or natural area with high crops or
crops of varying height, and scattered obstacles at relative distances
of 12-15 obstacle heights for porous objects (e.g. shelterbelts) or
8-12 obstacle heights for low solid objects (e.g. buildings).
5 > '0.5' # very rough. Intensively cultivated landscape with many
rather large obstacle groups (large farms, clumps of forest) separated
by open spaces of about eight obstacle heights. Low densely planted
major vegetation like bush land, orchards, young forest. Also, area
moderately covered by low buildings with interspaces of three to
seven building heights and no high trees.
6 > '1.0' # Skimming. Landscape regularly covered with similar-size
large obstacles, with open spaces of the same order of magnitude as
obstacle heights; e.g. mature regular forests, densely built-up area
without much building height variation.
7 > '2.0' # chaotic. City centres with mixture of low-rise and
high-rise buildings, or large forests of irregular height with many