several years modelling

General scientific issues regarding ROMS

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jafar1979
Posts: 37
Joined: Sat Feb 18, 2012 6:51 pm
Location: inioas

several years modelling

#1 Unread post by jafar1979 »

when there are yearly input files (for example wind_2004.nc and wind_2005.nc), further year's wind_time should be continuation of former year's wind_time or started from the beginning? For example when we have:

Code: Select all

NFFILES == 2                      
     FRCNAME ==  wind_2004.nc\
                                wind_2005.nc/
                                river_2004.nc\
                                 river_2005.nc/     

which wind-time's unit in first year is 'days since 2004-01-01 00:00:00' and in second one is 'days since 2005-01-01 00:00:00' but in both of them wind_time is:

Code: Select all

.125, .250, .375, .5, .625, .75, .875 ,....,364.75,364.875, 365

Now, I want to know, when wind_time in both years is same as each other, when Roms reads first year wind data it will go to read second year after first year?
Or wind_time in second year should be changed to 365.125, 365.25, 365.375,..., 370 (continuation of former year's wind_time) by user? same question about other forces :?: (for example monthly river data)
Cheers
jafar

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kate
Posts: 4091
Joined: Wed Jul 02, 2003 5:29 pm
Location: CFOS/UAF, USA

Re: several years modelling

#2 Unread post by kate »

ROMS doesn't parse the "since 2004-01-01 00:00:00", just the "days". You need to pick a time origin and make all your times relative to that. Your second year can start with "365.125, 365.25, 365.375,..., "

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