MARS

Specifies the reference date of the real-time forecast associated to the hindcast.

refdate=<value>

In the Monthly Forecasting system, hindcasts (stream=mnfh) are run on the same day, same month for the last n years, and are associated to the real-time forecast by storing them under the same reference date.

In the EPS, hindcasts are run on the same day, but for the period 1971 to 2000.

Valid formats are:

Absolute as YYYY-MM-DD, YYYYMMDD. The day of the year can also be used: YYYY-DDD
Relative as -n ; n is the number of days before today (i.e., -1 = yesterday )
Name of month (e.g. January for Climatology data)
Operational monthly means are retrieved by setting day (DD) to 00.

Examples

refdate = 20180918/20180919 # The 18th and 19th September 2018

refdate = 2018-145 # The 145th day in 2018

refdate = 20180101/to/20180131 # Every day in September 2018

Dissemination

Specifies the hindcast base date.

refdate=<value>

For hindcast data, the only value for the parameter DATE (date on which the hindcast is based) supported in dissemination is ALL. Hindcasts are only run on

THURSDAY (00 UTC based ENS run).

Value Note

all

Only all is supported for HINDCAST.

off

For non hindcast data

For STREAM=EFHS and TYPE=EM/ES/TAEM/TAES