Standards: Resolution Time Position Temp. Precipit. Clouds  Radiation  Wind  Others... Symbols Language

Position

Position is defined by the geographic location (coordinate) and the elevation (altitude) of the point considered, be on the surface or in the atmosphere.

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Coordinates

Coordinates are used to define forecast locations (p☼int), overview areas (MAP) or sections (VIA), as well as to select between locations or exchange place information.

All meteoblue coordinates follow the World_Geodetic_System and are given in WGS84, which uses the equator for latitude and zero meridian for longitude reference. Latitude and Longitude are given in degrees and decimals. Formats are:

  • Latitude:    from -90.0000° (South) to 90.0000°(North);
  • Longitude: from -180.0000° (West) to 180.0000°(East);

ATTENTION:
  • Western WGS84 decimal longitudes are NEGATIVE (-0.0001 to -179.9999)
  • Southern WGS84 decimal latitudes are NEGATIVE (-0.0001 to -90)


meteoblue also defines model domains by their coordinates. Domain grid points also have defined coordinate boundaries.

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Coordinate conversion

To convert your coordinates into WGS84 units, you can use one of links provided below.

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EN: http://www.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html
DE: http://www.ipf.uni-karlsruhe.de/cgi-bin/trafo.tcl
IT: http://www.ultrasoft3d.it/Conversione_Coordinate.aspx
http://www.mcaviglia.ch/gmap/get_coor_ext.asp?l=de

Altitudes


Altitudes  are used for the model topography to calculate the forecast and the effect of local microclimate, as well as for describing and selecting locations, and adjusting forecasts to particular (p☼int) customer locations.
All terrestrial altitudes are expressed in meters above sea level (m asl). meteoblue uses detail local topography models of 90 meters Opens internal link in current windowresolution and other validated data sources.
Atmosphere altitude (the position of a point in the air) is expressed in meters (m), kilometer (km), or hectopascal (hPa) above sea level (asl). A graph for converting altitude into pressure or vice-versa is shown on the right.
Other scales can be offered on request.

Pressure-altitude chart
Air pressure (hPa) as function of altitude (km); standard temperate atmosphere.