New section 4 templates to encode derived products, probabilities and quantiles of wave parameters defined by a wave period #346
Description
Introduction
Product definition templates are available to encode wave parameters selected by a period range. At ECMWF, these templates are used to encode the "Significant wave height of all waves with periods within the inclusive range from X to Y seconds". There are no derived forecast (e.g., for ensemble mean / spread), probability (e.g., probability of exceedance of x metres) and quantile (e.g., 90th percentile of the forecast PDF of the significant wave height) versions of these templates available. Therefore, we would like to propose new templates to extend the existing ones. These new templates are based on the following templates:
| Code | Description |
|---|---|
| 4.104 | Individual ensemble forecast, control and perturbed at a horizontal level or in a horizontal layer at a point in time for waves selected by period range |
| 4.145 | Individual ensemble forecast, control and perturbed at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range |
Amendment details
ADD to code table 4.0 Product definition template number
| Code | Description |
|---|---|
| 160 | Derived forecasts based on all ensemble members at a horizontal level or in a horizontal layer at a point in time for waves selected by period range |
| 161 | Derived forecasts based on all ensemble members at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range |
| 162 | Probability forecasts at a horizontal level or in a horizontal layer at a point in time for waves selected by period range |
| 163 | Probability forecasts at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range |
| 164 | Quantile forecasts at a horizontal level or in a horizontal layer at a point in time for waves selected by period range |
| 165 | Quantile forecasts at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range |
ADD TEMPLATE 4.160, Derived forecasts based on all ensemble members at a horizontal level or in a horizontal layer at a point in time for waves selected by period range
| Octet | Number of octets | Description |
|---|---|---|
| 10 | 1 | Parameter Category (see code table 4.1) |
| 11 | 1 | Parameter Number (see code table 4.2) |
| 12 | 1 | Type of wave period interval (see Code table 4.91) |
| 13 | 1 | Scale factor of lower wave period limit |
| 14-17 | 4 | Scaled value of lower wave period limit |
| 18 | 1 | Scale factor of upper wave period limit |
| 19-22 | 4 | Scaled value of upper wave period limit |
| 23 | 1 | Type of generating process (see Code table 4.3) |
| 24 | 1 | Background generating process identifier (defined by originating centre) |
| 25 | 1 | Analysis or forecast generating process identifier (defined by originating centre) |
| 26-27 | 2 | Hours of observational data cut-off after reference time |
| 28 | 1 | Minutes of observational data cut-off after reference time |
| 29 | 1 | Indicator of unit of time range (see Code table 4.4) |
| 30-33 | 4 | Forecast time in units defined by previous octet |
| 34 | 1 | Type of first fixed surface (see Code table 4.5) |
| 35 | 1 | Scale factor of first fixed surface |
| 36-39 | 4 | Scaled value of first fixed surface |
| 40 | 1 | Type of second fixed surface (see Code table 4.5) |
| 41 | 1 | Scale factor of second fixed surface |
| 42-45 | 4 | Scaled value of second fixed surface |
| 46 | 1 | Derived forecast (see Code table 4.7) |
| 47-50 | 4 | Number of forecasts in ensemble |
ADD TEMPLATE 4.161, Derived forecasts based on all ensemble members at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range
| Octet | Number of octets | Description |
|---|---|---|
| 10 | 1 | Parameter Category (see code table 4.1) |
| 11 | 1 | Parameter Number (see code table 4.2) |
| 12 | 1 | Type of wave period interval (see Code table 4.91) |
| 13 | 1 | Scale factor of lower wave period limit |
| 14-17 | 4 | Scaled value of lower wave period limit |
| 18 | 1 | Scale factor of upper wave period limit |
| 19-22 | 4 | Scaled value of upper wave period limit |
| 23 | 1 | Type of generating process (see Code table 4.3) |
| 24 | 1 | Background generating process identifier (defined by originating centre) |
| 25 | 1 | Analysis or forecast generating process identifier (defined by originating centre) |
| 26-27 | 2 | Hours of observational data cut-off after reference time |
| 28 | 1 | Minutes of observational data cut-off after reference time |
| 29 | 1 | Indicator of unit of time range (see Code table 4.4) |
| 30-33 | 4 | Forecast time in units defined by previous octet |
| 34 | 1 | Type of first fixed surface (see Code table 4.5) |
| 35 | 1 | Scale factor of first fixed surface |
| 36-39 | 4 | Scaled value of first fixed surface |
| 40 | 1 | Type of second fixed surface (see Code table 4.5) |
| 41 | 1 | Scale factor of second fixed surface |
| 42-45 | 4 | Scaled value of second fixed surface |
| 46 | 1 | Derived forecast (see Code table 4.7) |
| 47-50 | 4 | Number of forecasts in ensemble |
| 51-52 | 2 | Year of end of overall time interval |
| 53 | 1 | Month of end of overall time interval |
| 54 | 1 | Day of end of overall time interval |
| 55 | 1 | Hour of end of overall time interval |
| 56 | 1 | Minute of end of overall time interval |
| 57 | 1 | Second of end of overall time interval |
| 58 | 1 | n - number of time range specifications describing the time intervals used to calculate the statistically processed field |
| 59-62 | 4 | Total number of data values missing in statistical process |
| 63 - 74 Specification of the outermost (or only) time range over which statistical processing is done | ||
| 63 | 1 | Statistical process used to calculate the processed field from the field at each time increment during the time range (see code table 4.10) |
| 64 | 1 | Type of time increment between successive fields used in the statistical processing (see code table 4.11) |
| 65 | 1 | Indicator of unit of time for time range over which statistical processing is done (see code table 4.4) |
| 66-69 | 4 | Length of the time range over which statistical processing is done, in units defined by the previous octet |
| 70 | 1 | Indicator of unit of time for the increment between the successive fields used (see code table 4.4) |
| 71-74 | 4 | Time increment between successive fields, in units defined by the previous octet |
| 75 - nn These octets are included only if n > 1, where nn = 62+ 12 x n | ||
| 75-86 | 12 | As octets 63 to 74, next innermost step of processing |
| 87-nn | n/a | Additional time range specifications, included in accordance with the value of n. Contents as octets 63 to 74, repeated as necessary |
ADD TEMPLATE 4.162, Probability forecasts at a horizontal level or in a horizontal layer at a point in time for waves selected by period range
| Octet | Number of octets | Description |
|---|---|---|
| 10 | 1 | Parameter Category (see code table 4.1) |
| 11 | 1 | Parameter Number (see code table 4.2) |
| 12 | 1 | Type of wave period interval (see Code table 4.91) |
| 13 | 1 | Scale factor of lower wave period limit |
| 14-17 | 4 | Scaled value of lower wave period limit |
| 18 | 1 | Scale factor of upper wave period limit |
| 19-22 | 4 | Scaled value of upper wave period limit |
| 23 | 1 | Type of generating process (see Code table 4.3) |
| 24 | 1 | Background generating process identifier (defined by originating centre) |
| 25 | 1 | Analysis or forecast generating process identifier (defined by originating centre) |
| 26-27 | 2 | Hours of observational data cut-off after reference time |
| 28 | 1 | Minutes of observational data cut-off after reference time |
| 29 | 1 | Indicator of unit of time range (see Code table 4.4) |
| 30-33 | 4 | Forecast time in units defined by previous octet |
| 34 | 1 | Type of first fixed surface (see Code table 4.5) |
| 35 | 1 | Scale factor of first fixed surface |
| 36-39 | 4 | Scaled value of first fixed surface |
| 40 | 1 | Type of second fixed surface (see Code table 4.5) |
| 41 | 1 | Scale factor of second fixed surface |
| 42-45 | 4 | Scaled value of second fixed surface |
| 46 | 1 | Type of ensemble forecast (see Code table 4.6) |
| 47-50 | 4 | Number of forecasts in ensemble |
| 51 | 1 | Forecast probability number |
| 52 | 1 | Total number of forecast probabilities |
| 53 | 1 | Probability type (see Code table 4.9) |
| 54 | 1 | Scale factor of lower limit |
| 55-58 | 4 | Scaled value of lower limit |
| 59 | 1 | Scale factor of upper limit |
| 60-63 | 4 | Scaled value of upper limit |
ADD TEMPLATE 4.163, Probability forecasts at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range
| Octet | Number of octets | Description |
|---|---|---|
| 10 | 1 | Parameter Category (see code table 4.1) |
| 11 | 1 | Parameter Number (see code table 4.2) |
| 12 | 1 | Type of wave period interval (see Code table 4.91) |
| 13 | 1 | Scale factor of lower wave period limit |
| 14-17 | 4 | Scaled value of lower wave period limit |
| 18 | 1 | Scale factor of upper wave period limit |
| 19-22 | 4 | Scaled value of upper wave period limit |
| 23 | 1 | Type of generating process (see Code table 4.3) |
| 24 | 1 | Background generating process identifier (defined by originating centre) |
| 25 | 1 | Analysis or forecast generating process identifier (defined by originating centre) |
| 26-27 | 2 | Hours of observational data cut-off after reference time |
| 28 | 1 | Minutes of observational data cut-off after reference time |
| 29 | 1 | Indicator of unit of time range (see Code table 4.4) |
| 30-33 | 4 | Forecast time in units defined by previous octet |
| 34 | 1 | Type of first fixed surface (see Code table 4.5) |
| 35 | 1 | Scale factor of first fixed surface |
| 36-39 | 4 | Scaled value of first fixed surface |
| 40 | 1 | Type of second fixed surface (see Code table 4.5) |
| 41 | 1 | Scale factor of second fixed surface |
| 42-45 | 4 | Scaled value of second fixed surface |
| 46 | 1 | Type of ensemble forecast (see Code table 4.6) |
| 47-50 | 4 | Number of forecasts in ensemble |
| 51 | 1 | Forecast probability number |
| 52 | 1 | Total number of forecast probabilities |
| 53 | 1 | Probability type (see Code table 4.9) |
| 54 | 1 | Scale factor of lower limit |
| 55-58 | 4 | Scaled value of lower limit |
| 59 | 1 | Scale factor of upper limit |
| 60-63 | 4 | Scaled value of upper limit |
| 64-65 | 2 | Year of end of overall time interval |
| 66 | 1 | Month of end of overall time interval |
| 67 | 1 | Day of end of overall time interval |
| 68 | 1 | Hour of end of overall time interval |
| 69 | 1 | Minute of end of overall time interval |
| 70 | 1 | Second of end of overall time interval |
| 71 | 1 | n - number of time range specifications describing the time intervals used to calculate the statistically processed field |
| 72-75 | 4 | Total number of data values missing in statistical process |
| 76 - 87 Specification of the outermost (or only) time range over which statistical processing is done | ||
| 76 | 1 | Statistical process used to calculate the processed field from the field at each time increment during the time range (see code table 4.10) |
| 77 | 1 | Type of time increment between successive fields used in the statistical processing (see code table 4.11) |
| 78 | 1 | Indicator of unit of time for time range over which statistical processing is done (see code table 4.4) |
| 79-82 | 4 | Length of the time range over which statistical processing is done, in units defined by the previous octet |
| 83 | 1 | Indicator of unit of time for the increment between the successive fields used (see code table 4.4) |
| 84-87 | 4 | Time increment between successive fields, in units defined by the previous octet |
| 88 - nn These octets are included only if n > 1, where nn = 75+ 12 x n | ||
| 88-99 | 12 | As octets 76 to 87, next innermost step of processing |
| 100-nn | n/a | Additional time range specifications, included in accordance with the value of n. Contents as octets 76 to 87, repeated as necessary |
ADD TEMPLATE 4.164, Quantile forecasts at a horizontal level or in a horizontal layer at a point in time for waves selected by period range
| Octet | Number of octets | Description |
|---|---|---|
| 10 | 1 | Parameter Category (see code table 4.1) |
| 11 | 1 | Parameter Number (see code table 4.2) |
| 12 | 1 | Type of wave period interval (see Code table 4.91) |
| 13 | 1 | Scale factor of lower wave period limit |
| 14-17 | 4 | Scaled value of lower wave period limit |
| 18 | 1 | Scale factor of upper wave period limit |
| 19-22 | 4 | Scaled value of upper wave period limit |
| 23 | 1 | Type of generating process (see Code table 4.3) |
| 24 | 1 | Background generating process identifier (defined by originating centre) |
| 25 | 1 | Analysis or forecast generating process identifier (defined by originating centre) |
| 26-27 | 2 | Hours of observational data cut-off after reference time |
| 28 | 1 | Minutes of observational data cut-off after reference time |
| 29 | 1 | Indicator of unit of time range (see Code table 4.4) |
| 30-33 | 4 | Forecast time in units defined by previous octet |
| 34 | 1 | Type of first fixed surface (see Code table 4.5) |
| 35 | 1 | Scale factor of first fixed surface |
| 36-39 | 4 | Scaled value of first fixed surface |
| 40 | 1 | Type of second fixed surface (see Code table 4.5) |
| 41 | 1 | Scale factor of second fixed surface |
| 42-45 | 4 | Scaled value of second fixed surface |
| 46-47 | 2 | Total number of quantile q |
| 48-49 | 2 | Quantile value (between 0 and q) |
ADD TEMPLATE 4.165, Quantile forecasts at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval for waves selected by period range
| Octet | Number of octets | Description |
|---|---|---|
| 10 | 1 | Parameter Category (see code table 4.1) |
| 11 | 1 | Parameter Number (see code table 4.2) |
| 12 | 1 | Type of wave period interval (see Code table 4.91) |
| 13 | 1 | Scale factor of lower wave period limit |
| 14-17 | 4 | Scaled value of lower wave period limit |
| 18 | 1 | Scale factor of upper wave period limit |
| 19-22 | 4 | Scaled value of upper wave period limit |
| 23 | 1 | Type of generating process (see Code table 4.3) |
| 24 | 1 | Background generating process identifier (defined by originating centre) |
| 25 | 1 | Analysis or forecast generating process identifier (defined by originating centre) |
| 26-27 | 2 | Hours of observational data cut-off after reference time |
| 28 | 1 | Minutes of observational data cut-off after reference time |
| 29 | 1 | Indicator of unit of time range (see Code table 4.4) |
| 30-33 | 4 | Forecast time in units defined by previous octet |
| 34 | 1 | Type of first fixed surface (see Code table 4.5) |
| 35 | 1 | Scale factor of first fixed surface |
| 36-39 | 4 | Scaled value of first fixed surface |
| 40 | 1 | Type of second fixed surface (see Code table 4.5) |
| 41 | 1 | Scale factor of second fixed surface |
| 42-45 | 4 | Scaled value of second fixed surface |
| 46-47 | 2 | Total number of quantile q |
| 48-49 | 2 | Quantile value (between 0 and q) |
| 50-51 | 2 | Year of end of overall time interval |
| 52 | 1 | Month of end of overall time interval |
| 53 | 1 | Day of end of overall time interval |
| 54 | 1 | Hour of end of overall time interval |
| 55 | 1 | Minute of end of overall time interval |
| 56 | 1 | Second of end of overall time interval |
| 57 | 1 | n - number of time range specifications describing the time intervals used to calculate the statistically processed field |
| 58-61 | 4 | Total number of data values missing in statistical process |
| 62 - 73 Specification of the outermost (or only) time range over which statistical processing is done | ||
| 62 | 1 | Statistical process used to calculate the processed field from the field at each time increment during the time range (see code table 4.10) |
| 63 | 1 | Type of time increment between successive fields used in the statistical processing (see code table 4.11) |
| 64 | 1 | Indicator of unit of time for time range over which statistical processing is done (see code table 4.4) |
| 65-68 | 4 | Length of the time range over which statistical processing is done, in units defined by the previous octet |
| 69 | 1 | Indicator of unit of time for the increment between the successive fields used (see code table 4.4) |
| 70-73 | 4 | Time increment between successive fields, in units defined by the previous octet |
| 74 - nn These octets are included only if n > 1, where nn = 61+ 12 x n | ||
| 74-85 | 12 | As octets 62 to 73, next innermost step of processing |
| 86-nn | n/a | Additional time range specifications, included in accordance with the value of n. Contents as octets 62 to 73, repeated as necessary |
Requestor(s)
Sebastien Villaume (ECMWF)
Robert Osinski (ECMWF)
Stakeholder(s)
ECMWF
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None
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