Standard Weather Parameters - Radiation

instantaneous fluxes: Clear Sky Radiation | Diffuse Radiation | Direct Radiation | Global Radiation
accumulated energy: Accumulated Energy (Direct, Diffuse or Global Radiation) | Clear Sky Radiation

Radiation

Note: All radiation parameters are normalized on one square meter. The effective unit therefore is W/m² or J/m², respectively.

Clear Sky Radiation: Instantaneous Flux

Gives the instantaneous flux of clear sky radiation in Watts per square meter.

clear_sky_rad:W

Examples

• Show the expected instantaneous flux of clear sky radiation for the next two days.

  https://api.meteomatics.com/__replace__0T00:00:00ZP2D:PT1H/clear_sky_rad:W/47.412164,9.340652/html

  

Diffuse Radiation: Instantaneous flux

Gives the instantaneous flux of diffuse radiation in Watts per square meter.

diffuse_rad:W

Examples

• Show the five days forecast for diffuse radiation.

  https://api.meteomatics.com/__replace__0T00:00:00ZP5D:PT1H/diffuse_rad:W/50,10/html

  

Direct Radiation: Instantaneous Flux

Gives the instantaneous flux of direct radiation in Watts per square meter.

direct_rad:W

Examples

• Show the five-day forecast for direct radiation.

  https://api.meteomatics.com/__replace__0T00:00:00ZP5D:PT1H/direct_rad:W/50,10/html

  

Global Radiation: Instantaneous Flux

Gives the instantaneous flux of global radiation (diffuse + direct radiation) in Watts per square meter.

global_rad:W

Examples

• Show the five-day forecast for global radiation.

  https://api.meteomatics.com/__replace__0T00:00:00ZP5D:PT1H/global_rad:W/50,10/html

  

Accumulated Energy

Gives the accumulated energy of direct, diffuse or global radiation in Ws, Wh or J per square meter.

<type>_rad_<interval>:<unit>

Available type: global, direct, diffuse

Available intervals: 5min, 10min, 15min, 20min, 30min, 1h, 3h, 6h, 12h, 24h

Available units: Ws, Wh, J

Examples

• Show the direct, diffuse and global radiation accumulated over one hour intervals for the next five days.

  https://api.meteomatics.com/__replace__0T00:00:00ZP5D:PT1H/direct_rad_1h:J,diffuse_rad_1h:J,global_rad_1h:J/50,10/html

  

• https://api.meteomatics.com/__replace__0T00:00:00ZP1D:PT8H/direct_rad_1h:J,diffuse_rad_1h:J,global_rad_1h:J/50,10/json

  {"version":"3.0","user":"api-test","dateGenerated":"2018-02-07T15:28:54Z","status":"OK","data":
  [{"parameter":"direct_rad_1h:J","coordinates":[{"lat":50,"lon":10,"dates":
  [{"date":"2018-02-05T00:00:00Z","value":0},{"date":"2018-02-05T08:00:00Z","value":60676.4},
  {"date":"2018-02-05T16:00:00Z","value":17505.2},{"date":"2018-02-06T00:00:00Z","value":0}]}]},
  {"parameter":"diffuse_rad_1h:J","coordinates":[{"lat":50,"lon":10,"dates":
  [{"date":"2018-02-05T00:00:00Z","value":0},{"date":"2018-02-05T08:00:00Z","value":40723.3},
  {"date":"2018-02-05T16:00:00Z","value":73051.6},{"date":"2018-02-06T00:00:00Z","value":0}]}]},
  {"parameter":"global_rad_1h:J","coordinates":[{"lat":50,"lon":10,"dates":
  [{"date":"2018-02-05T00:00:00Z","value":0},{"date":"2018-02-05T08:00:00Z","value":101399.7},
  {"date":"2018-02-05T16:00:00Z","value":90556.8},{"date":"2018-02-06T00:00:00Z","value":0}]}]}]}

Clear Sky Radiation: Accumulated Energy

Gives the accumulated clear sky flux over the given interval in Joules per square meter.

clear_sky_energy_<interval>:J

Available intervals: 1h, 3h, 6h, 12h, 24h

Examples

• Show the expected accumulated clear sky energy for the next two days.

  https://api.meteomatics.com/__replace__0T00:00:00ZP2D:PT1H/clear_sky_energy_1h:J/47.412164,9.340652/html

  

• A short part of the corresponding csv:

  validdate;clear_sky_energy_1h:J
  2018-08-03T03:00:00Z;0
  2018-08-03T04:00:00Z;0
  2018-08-03T05:00:00Z;99322
  2018-08-03T06:00:00Z;595481
  2018-08-03T07:00:00Z;1292134
  2018-08-03T08:00:00Z;1990880.5
  2018-08-03T09:00:00Z;2605813.1
  2018-08-03T10:00:00Z;3082453.7
  2018-08-03T11:00:00Z;3383074.9
  2018-08-03T12:00:00Z;3484897.5