++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Subject: [SICOPOLIS:117] A couple of new options for grounded ice velocities From: Jorge Bernales Date: 2021-06-09, 04:44 To: SICOPOLIS ML Dear all, Together with Ralf, we have added a new option to combine the SIA and SStA velocities, which can be used as an alternative to the slip-ratio approach already included in SICOPOLIS. This new option is very similar to the weighed average of (non-sliding) SIA and SStA contributions proposed by [1]; the only difference is that the SStA solution is always fully applied. For a description of this particular implementation please have a look at [2]. As a bonus, we have also added a SStA-only option for grounded ice. Both methods use the new header-file switch HYB_MODE. We hope you'll find these options useful. Happy modelling! Best regards, Jorge [1]: Bueler and Brown, 2009: https://doi.org/10.1029/2008JF001179 [2]: Bernales et al., 2017: https://doi.org/10.1017/jog.2017.42 _______________________________________________ SICOPOLIS mailing list SICOPOLIS@ml.hokudai.ac.jp https://ml.hines.hokudai.ac.jp/mailman/listinfo/sicopolis ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Subject: [SICOPOLIS:118] Branch release_v5.2 From: Ralf Greve Date: 2021-06-09, 19:06 To: SICOPOLIS ML Dear all, today, I created a release branch for SICOPOLIS version 5.2 and pushed it to the AWI GitLab repository. Please note that this is not the final release yet, it still requires some testing and polishing. Will come soon; stay tuned! Best regards, Ralf -- Dr. Ralf Greve Professor, Glacier and Ice Sheet Research Institute of Low Temperature Science (ILTS) Hokkaido University Kita-19, Nishi-8, Kita-ku Sapporo 060-0819, Japan (+81)-(0)11-706-6891 greve@lowtem.hokudai.ac.jp http://wwwice.lowtem.hokudai.ac.jp/~greve/ https://twitter.com/RalfGreve _______________________________________________ SICOPOLIS mailing list SICOPOLIS@ml.hokudai.ac.jp https://ml.hines.hokudai.ac.jp/mailman/listinfo/sicopolis ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Subject: [SICOPOLIS:119] Release of SICOPOLIS version 5.2 From: Ralf Greve Date: 2021-06-14, 09:28 To: SICOPOLIS ML Dear Sicolisters, I hope this e-mail finds you well. It is my pleasure to announce that version 5.2 of the ice-sheet model SICOPOLIS (SImulation COde for POLythermal Ice Sheets) was released last Friday (11 June 2021). The main new features are:  - Version control switched from Subversion to Git    (repository hosted on AWI's GitLab installation - thanks).  - Two different options for hybrid shallow-ice (SIA)/shelfy-stream (SStA)    dynamics available, plus pure SStA dynamics (thanks to Jorge Bernales).  - A separate flow enhancement factor  for SStA can be chosen    (previously, only one common value for SIA and SStA was possible).  - In addition to ice-sheet-wide output of scalar variables    (ice volume, area, global mass balance components etc.),    these variables can also be written for specified regions    (e.g., EAIS, WAIS, Peninsula for Antarctica). For more details see the commit logs at > Repository > Commits (branch 'develop'). A great thanks to all fellow developers who contributed to these features! On the SICOPOLIS website you will find further information, downloading instructions and documentation. Please note also the mailing list (under "Support"; the archive is also open to non-subscribers). Feedbacks are of course welcome, and I'll be happy to help in case of problems that may come up when using the program. Best regards, Ralf -- Dr. Ralf Greve Professor, Glacier and Ice Sheet Research Institute of Low Temperature Science (ILTS) Hokkaido University Kita-19, Nishi-8, Kita-ku Sapporo 060-0819, Japan (+81)-(0)11-706-6891 greve@lowtem.hokudai.ac.jp http://wwwice.lowtem.hokudai.ac.jp/~greve/ https://twitter.com/RalfGreve _______________________________________________ SICOPOLIS mailing list SICOPOLIS@ml.hokudai.ac.jp https://ml.hines.hokudai.ac.jp/mailman/listinfo/sicopolis ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Subject: [SICOPOLIS:120] Deleting native binary output option From: Ralf Greve Date: 2021-06-16, 09:04 To: SICOPOLIS ML Dear all, to make the code and its maintenance simpler, I would like to delete the option for native binary output of time-slice files (current parameter setting NETCDF==1), and make NetCDF output the only available option (NETCDF==2). This has been the standard for a long time anyway. The price to pay is that SICOPOLIS cannot be run any more without a NetCDF installation. However, for most real-world applications it is needed anyway as input is often available as NetCDF only (ISMIP6 etc.). So, while a loss of simplicity in principle, in practise I don't think it makes a difference. *** Please let me know as soon as possible if you object to this change! If I don't hear anything, I will assume that it is fine and proceed. Thanks! Best regards, Ralf -- Dr. Ralf Greve Professor, Glacier and Ice Sheet Research Institute of Low Temperature Science (ILTS) Hokkaido University Kita-19, Nishi-8, Kita-ku Sapporo 060-0819, Japan (+81)-(0)11-706-6891 greve@lowtem.hokudai.ac.jp http://wwwice.lowtem.hokudai.ac.jp/~greve/ https://twitter.com/RalfGreve _______________________________________________ SICOPOLIS mailing list SICOPOLIS@ml.hokudai.ac.jp https://ml.hines.hokudai.ac.jp/mailman/listinfo/sicopolis ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Subject: [SICOPOLIS:121] Follow-up: Native binary output option From: Ralf Greve Date: 2021-06-21, 09:56 To: SICOPOLIS ML Dear all, On 2021-06-16 09:04, Ralf Greve wrote: > to make the code and its maintenance simpler, I would like to delete the option for native binary output of time-slice files (current parameter setting NETCDF==1), and make NetCDF output the only available option (NETCDF==2). This has been the standard for a long time anyway. > > The price to pay is that SICOPOLIS cannot be run any more without a NetCDF installation. However, for most real-world applications it is needed anyway as input is often available as NetCDF only (ISMIP6 etc.). So, while a loss of simplicity in principle, in practise I don't think it makes a difference. following up on this matter: The AD/adjoint developers would like to keep the option for native binary output of time-slice files (NETCDF==1) for a while longer to make the AD tool fit for NetCDF. So, it will stay for the time being. Best regards, Ralf -- Dr. Ralf Greve Professor, Glacier and Ice Sheet Research Institute of Low Temperature Science (ILTS) Hokkaido University Kita-19, Nishi-8, Kita-ku Sapporo 060-0819, Japan (+81)-(0)11-706-6891 greve@lowtem.hokudai.ac.jp http://wwwice.lowtem.hokudai.ac.jp/~greve/ https://twitter.com/RalfGreve _______________________________________________ SICOPOLIS mailing list SICOPOLIS@ml.hokudai.ac.jp https://ml.hines.hokudai.ac.jp/mailman/listinfo/sicopolis ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++