output column content of HelioClim-3 webservices

Last update: June 2017

Coming soon via the HelioClim-3 interfaces:

                \     Plane orientation

Time step   \

Horizontal
(GHI only)
Fix-tilted
(all components, horizontal and fix-tilted)
Tracking (1D or 2D)
(all components, horizontal and tracking)
Monthly

HCmonth
Daily values of Global Horizontal Irradiation (GHI) average over the month

HCmonthIncl
Monthly irradiation values (all the radiation components) over a fix-tilted and horizontal plane

HCmonthTracking
Monthly irradiation values (all the radiation components) over a normal (2-D tracking) and horizontal plane

Weekly

HCweek
Daily values of GHI average over the week

- -
Daily

HCday
Daily values of GHI

HCdayIncl
Daily irradiation values (all the radiation components) over a fix-tilted and horizontal plane

HCdayTracking
Daily irradiation values (all the radiation components) over a normal and horizontal plane

Hourly

HChour
Hourly values of GHI

HChourIncl
Hourly irradiation values (all the radiation components) over a fix-tilted and horizontal plane

HChourTracking
Hourly irradiation values (all the radiation components) over a normal and horizontal plane

15 min (from 1 to 30 min)

HC15
15 min values of GHI

HC15Incl
15 min irradiation values (all the radiation components) over a fix-tilted and horizontal plane

HC15Tracking
15 min irradiation values (all the radiation components) over a normal and horizontal plane


HC3 unified format - horizontal plane

1 2 3 4 5 6
Date Hour Global Horiz Clear-Sky Top of Atmosphere Code
  1. Date: format yyyy-mm-dd
  2. Hour: decimal hour in the day
  3. Global Horiz irradiation averaged over the period in Wh/m² (-999 if no data)
  4. Clear-Sky irradiation averaged over the period in Wh/m² (-999 if no data)
  5. Top of Atmosphere: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²
  6. Code: 0: no data, 1: sun below horizon, 2: satellite assessment, 5: interpolation in time, 6: forecast

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HC3 unified format - fix-tilted and normal plane

1 2 3 4 5 6 7 8 9 10 11 12
Date Hour Direct Inclined Diffuse Inclined Reflected Global Inclined Direct Horiz Diffus Horiz Global Horiz Clear-Sky Top of Atmosphere Code
  1. Date: format yyyy-mm-dd
  2. Hour: decimal hour in the day
  3. Direct inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  4. Diffuse inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  5. Reflected inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Global inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Clear-Sky irradiation averaged over the period in Wh/m² (-999 if no data)
  11. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²
  12. Code: 0: no data, 1: sun below horizon, 2: satellite assessment, 5: interpolation in time, 6: forecast

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HCmonth

1 2 3 4 5 6 7 8 9 10
  year month Irradiance Lower bound Upper bound Nb data Top of Atmosphere Clear-Sky Irradiation Irradiation J/cm²
  1. year
  2. month: number of the month in the year
  3. irradiance (GHI) averaged over the period in W/m² (-999 if no data)
  4. lower bound of the uncertainty on the irradiance values in W/m²
  5. upper bound of the uncertainty on the irradiance values in W/m²
  6. Nb data: number of valid days in the month
  7. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in W/m²
  8. Cls: typical irradiance averaged over the period if the sky were clear in W/m²
  9. Irradiation (GHI): monthly mean of daily irradiation in Wh/m² (-999 if no data)
  10. Irradiation (GHI): monthly mean of daily irradiation in J/cm² (-999 if no data)

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HCweek

1 2 3 4 5 6 7 8 9 10 11
 year month day Irradiance Lower bound Upper bound Nb data Top of Atmosphere Clear-Sky Irradiation Irradiation J/cm²
  1. year
  2. month: number of the month in the year
  3. day: number of the first day of each week in the month
  4. irradiance (GHI) averaged over the period in W/m² (-999 if no data)
  5. lower bound of the uncertainty on the irradiance values in W/m²
  6. upper bound of the uncertainty on the irradiance values in W/m²
  7. Nb data: number of valid days in the week
  8. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in W/m²
  9. Cls: typical irradiance averaged over the period if the sky were clear in W/m²
  10. Irradiation (GHI): weekly mean of daily irradiation in Wh/m² (-999 if no data)
  11. Irradiation (GHI): weekly mean of daily irradiation in J/cm² (-999 if no data)

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HCday

1 2 3 4 5 6 7 8 9 10 11
           month day Irradiance Lower bound Upper bound Nb data Top of Atmosphere Clear-Sky Irradiation Irradiation J/cm²
  1. year
  2. month: number of the month in the year
  3. day: number of the day in the month
  4. irradiance (GHI) averaged over the period in W/m² (-999 if no data)
  5. lower bound of the uncertainty on the irradiance values in W/m²
  6. upper bound of the uncertainty on the irradiance values in W/m²
  7. Nb data: ratio of the number of valid slots and the number of slots during the daylength in percent (%)
  8. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in W/m²
  9. Cls: typical irradiance averaged over the period if the sky were clear in W/m²
  10. irradiation (GHI) over the period in Wh/m² (-999 if no data)
  11. irradiation (GHI) over the period in J/cm² (-999 if no data)

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HChour

1 2 3 4 5 6 7 8 9 10 11
           month day time Irradiance Lower bound Upper bound code Top of Atmosphere Clear-Sky Irradiation
  1. year
  2. month: number of the month in the year
  3. day: number of the day in the month
  4. time: hour in the day
  5. irradiance (GHI) averaged over the period in W/m² (-999 if no data)
  6. lower bound of the uncertainty on the irradiance values in W/m²
  7. upper bound of the uncertainty on the irradiance values in W/m²
  8. code: 0: no data; 1: sun below horizon; 2: satellite assessment; 5: interpolation in time
  9. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in W/m²
  10. Cls: typical irradiance averaged over the period if the sky were clear in W/m²
  11. irradiation (GHI) over the period in Wh/m² (-999 if no data)

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HC15

1 2 3 4 5 6 7 8 9 10 11
           month day time Irradiance Lower bound Upper bound Code Top of Atmosphere Clear-Sky Irradiation
  1. year
  2. month: number of the month in the year
  3. day: number of the day in the month
  4. time: decimal hour in the day
  5. irradiance (GHI) averaged over the period in W/m² (-999 if no data)
  6. lower bound of the uncertainty on the irradiance values in W/m²
  7. upper bound of the uncertainty on the irradiance values in W/m²
  8. code: 0: no data; 1: sun below horizon; 2: satellite assessment; 5: interpolation in time
  9. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in W/m²
  10. Cls: typical irradiance averaged over the period if the sky were clear in W/m²
  11. irradiation (GHI) over the period in Wh/m² (-999 if no data)

More information about the lower and upper bounds
From the comparisons between HelioClim-3 and the ground station measurements, a classification (bins) of bias which mostly depends on the sun position in the sky is derived. These bins are then used to compute the lower and upper bounds of the GHI for the hour slot. With this algorithm, nothing guaranties that the upper bound is lower than the clear sky value and effectively, it happens that mostly for near clear sky days that the upper bound is higher than the clear sky value.
These bounds are intended to give an estimate of the error. Here are the expressions:
Lower bound = I + relativeBias - relativeStandardDeviation
Upper bound = I + relativeBias + relativeStandardDeviation

...where the "relativeBias" and the "relativeStandardDeviation" are computed from the comparison of HelioClim-3 and the station measurements. There is a 68% chance that the actual value is comprised between lower and upper bounds.

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HCmonthincl

1 2 3 4 5 6 7 8 9 10 11
           Month Nb valid days Direct Inclined Diffuse Inclined Reflected Global Inclined Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Nb valid days: number of valid days in the month
  4. Direct inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  5. Diffuse inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Reflected inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Global inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HCdayIncl

1 2 3 4 5 6 7 8 9 10 11
           Month Day Direct Inclined Diffuse Inclined Reflected Global Inclined Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. day: number of the day in the month
  4. Direct inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  5. Diffuse inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Reflected inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Global inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HChourIncl

1 2 3 4 5 6 7 8 9 10 11 12
           Month Day Hour Direct Inclined Diffuse Inclined Reflected Global Inclined Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Day: number of the day in the month
  4. Hour in the day
  5. Direct inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Diffuse inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Reflected inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Global inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  12. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HC15incl

1 2 3 4 5 6 7 8 9 10 11 12
           Month Day Hour Direct Inclined Diffuse Inclined Reflected Global Inclined Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Day: number of the day in the month
  4. Hour: decimal hour in the day
  5. Direct inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Diffuse inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Reflected inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Global inclined irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  12. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HCmonthTracking

1 2 3 4 5 6 7 8 9 10 11
           Month Nb valid days Direct NI Diffuse NI Reflected Global NI Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Nb valid days: number of valid days in the month
  4. Direct NI: direct normal irradiation averaged over the period in Wh/m² (-999 if no data)
  5. Diffuse NI: diffuse normal irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Reflected normal irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Global NI: global normal irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HCdayTracking

1 2 3 4 5 6 7 8 9 10 11
           Month Days Direct NI Diffuse NI Reflected Global NI Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Days: number of the day in the month
  4. Direct NI: direct normal irradiation averaged over the period in Wh/m² (-999 if no data)
  5. Diffuse NI: diffuse normal irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Reflected normal irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Global NI: global normal irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HChourTracking

1 2 3 4 5 6 7 8 9 10 11 12
           Month Day Hour Direct NI Diffuse NI Reflected Global NI Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Day: number of the day in the month
  4. Hour in the day
  5. Direct NI: direct normal irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Diffuse NI: diffuse normal irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Reflected normal irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Global NI: global normal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  12. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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HC15Tracking

1 2 3 4 5 6 7 8 9 10 11 12
           Month Day Hour Direct NI Diffuse NI Reflected Global NI Direct Horiz Diffus Horiz Global Horiz Top of Atmosphere
  1. year
  2. month: number of the month in the year
  3. Day: number of the day in the month
  4. Hour: decimal hour in the day
  5. Direct NI: direct normal irradiation averaged over the period in Wh/m² (-999 if no data)
  6. Diffuse NI: diffuse normal irradiation averaged over the period in Wh/m² (-999 if no data)
  7. Reflected normal irradiation averaged over the period in Wh/m² (-999 if no data)
  8. Global NI: global normal irradiation averaged over the period in Wh/m² (-999 if no data)
  9. Direct horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  10. Diffuse horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  11. Global horizontal irradiation averaged over the period in Wh/m² (-999 if no data)
  12. ToA: downwards irradiance averaged over the period at the top of the atmosphere (extraterrestrial) in Wh/m²

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