Search found 30 matches

by ckharris
Tue Mar 19, 2019 12:57 pm
Forum: ROMS Sediment
Topic: COAWST sediment example results inquiry
Replies: 1
Views: 457

Re: COAWST sediment example results inquiry

Our group is running a modified version of sed_floc_toy also. The main thing you should see with this test case is sediment flocculation and disaggregation in the water column. So the sediment size distributions in the water column should be changing with flocculation processes. This test case is no...
by ckharris
Fri Jan 04, 2019 7:15 pm
Forum: Ocean News
Topic: Student Modeler Award
Replies: 0
Views: 634

Student Modeler Award

Students and very recent graduates should consider applying for the CSDMS Syvitski Student Modeler Award. CSDMS invites graduate students from earth and computer sciences to compete for the annual “CSDMS Student Modeler Award.” The award is in honor of Jai Syvitski, CSDMS's founding executive direct...
by ckharris
Thu Jul 19, 2018 1:10 pm
Forum: Job Opportunities
Topic: Postdoctoral Position in Sediment - Biogeochemical Models
Replies: 1
Views: 1076

Re: Postdoctoral Position in Sediment - Biogeochemical Model

William & Mary’s Virginia Institute of Marine Science (VIMS) seeks a postdoctoral investigator to work with Dr. Courtney Harris in the Department of Physical Sciences. Specifically, the Postdoctoral Research Associate will perform numerical modeling studies to explore sediment geochemical control on...
by ckharris
Sat Jun 23, 2018 2:38 am
Forum: Job Opportunities
Topic: Postdoctoral Position in Sediment - Biogeochemical Models
Replies: 1
Views: 1076

Postdoctoral Position in Sediment - Biogeochemical Models

William & Mary’s Virginia Institute of Marine Science (VIMS) seeks a postdoctoral investigator to work with Dr. Courtney Harris in the Department of Physical Sciences. The successful candidate will work within the sediment modeling group, which uses numerical models to address interdisciplinary issu...
by ckharris
Mon May 15, 2017 2:20 pm
Forum: ROMS Discussion
Topic: Doesn't use river value
Replies: 4
Views: 1045

Re: Doesn't use river value

HI- I suggest trying to use a constant (steady) river input first until you get the time-stamps right, and see that the freshwater is really entering the estuary.
by ckharris
Fri Sep 23, 2016 2:26 pm
Forum: ROMS Discussion
Topic: Running ROMS Job with different number of nodes/processors
Replies: 3
Views: 1507

Re: Running ROMS Job with different number of nodes/processo

We had a similar problem, and it did lead to months of entertainment as Kate hinted. We found that our problem was actually the compiler, not the source code. We found that whether we got these types of differences depended on the optimization level that we used in compiling; that is we did not get ...
by ckharris
Wed Mar 23, 2016 9:21 pm
Forum: Meetings/Workshops
Topic: ChesMS16: Chesapeake Modeling Conference
Replies: 0
Views: 5538

ChesMS16: Chesapeake Modeling Conference

The Chesapeake Community Modeling Program (CCMP; http://ches.communitymodeling.org/ ) is sponsoring "ChesMS16" - the Chesapeake Community Modeling Symposium; to be held June 1 - 2, 2016 in Williamsburg VA. Abstracts can be submitted now for the ChesMS16 meeting (Chesapeake Modeling Symposium 2016) t...
by ckharris
Fri Nov 08, 2013 6:14 pm
Forum: Meetings/Workshops
Topic: Chesapeake Modeling Symposium; call for special sessions
Replies: 0
Views: 1442

Chesapeake Modeling Symposium; call for special sessions

Interested in numerical models for Chesapeake Bay? Consider leading a session at the upcoming ChesMS-2014, the Chesapeake Community Modeling Program’s Modeling Symposium, called “Chesapeake Frontiers: Modeling the watershed, estuary, living resources and the socio-economic system” Deadline for speci...
by ckharris
Thu May 02, 2013 7:54 pm
Forum: Meetings/Workshops
Topic: Abstract Call: INTERCOH 2013 Fine Sediment Dynamics
Replies: 0
Views: 1881

Abstract Call: INTERCOH 2013 Fine Sediment Dynamics

Announcing the 12th International Conference on Cohesive Sediment Transport Processes (INTERCOH); University of Florida, Gainesville, Florida; October 21-24, 2013. INTERCOH meetings are dedicated to improving our understanding of the physical processes of cohesive sediment in the natural environment...
by ckharris
Mon Jan 14, 2013 2:42 pm
Forum: ROMS Problems
Topic: Questions about the outcome of the test case riverplume2
Replies: 3
Views: 1069

Re: Questions about the outcome of the test case riverplume2

Hi I used riverplume2 to teach a class and we added sediment transport to the case. We did not change the downstream boundary condition. But this is how the case works: the grid has two open boundaries that are aligned across the shelf, which are upstream and downstream on a continental shelf. The “...
by ckharris
Tue Jan 08, 2013 1:48 am
Forum: ROMS Problems
Topic: Questions about the outcome of the test case riverplume2
Replies: 3
Views: 1069

Re: Questions about the outcome of the test case riverplume2

Hi
I recently used riverplume2 for a test case in a class. And, yes, the salinity distribution evolves to look like that. I think to improve it you need to change the downstream open boundary condition for salinity.

Best wishes,
Courtney Harris
by ckharris
Mon Jun 11, 2012 7:15 pm
Forum: ROMS Ecosystem
Topic: BIO_SEDIMENT time delay of remineralisation
Replies: 12
Views: 7453

Re: BIO_SEDIMENT time delay of remineralisation

In response to some email queries; it seemed reasonable to put this on the forum as well. To add biological reactions to the sediment bed: the main thing I’ve done is add a new variable called “bed_tracer” to the sediment model. Like the t() array, “bed_tracer(i,j,k,itrc,nstp)” is 5-d, with i,j, bei...
by ckharris
Thu Apr 12, 2012 12:59 am
Forum: ROMS Ecosystem
Topic: BIO_SEDIMENT time delay of remineralisation
Replies: 12
Views: 7453

Re: BIO_SEDIMENT time delay of remineralisation

HI- I have been working to couple the sediment transport and Fennel model within ROMS by adding a diagenetic model within the sediment bed model of ROMS. If you would like to see what we are doing, I can email you my Ocean Sciences 2012 powerpoint. email me if you would like to request it. Other gro...
by ckharris
Tue Mar 13, 2012 4:53 pm
Forum: Meetings/Workshops
Topic: Chesapeake Modeling Symposium 2012 Abstract Deadline
Replies: 0
Views: 1602

Chesapeake Modeling Symposium 2012 Abstract Deadline

A reminder that March 15 is the deadline for abstract submission, and early-bird registration for the ChesMS-12 meeting to be held May 21 – 22, in Annapolis MD. Overall scope and aims of the meeting: The Chesapeake Community Modeling Program (CCMP) seeks to improve modeling tools and related resourc...
by ckharris
Mon Oct 03, 2011 2:58 pm
Forum: Meetings/Workshops
Topic: Ocean Sciences 2012: Sediment in Estuaries and Caosts
Replies: 0
Views: 1568

Ocean Sciences 2012: Sediment in Estuaries and Caosts

Please consider submitting an abstract regarding modeling of sediment transport to our session: Session 029: Sediment Transport and Deposition in Lakes, Estuaries, and Shallow Shelves Organizers: Nathan Hawley, Great Lakes Environmental Research Laboratory, nathan.hawley@noaa.gov; Courtney K. Harris...
by ckharris
Thu Sep 15, 2011 7:23 pm
Forum: Job Opportunities
Topic: Three Assistant Prof's in Geological / Physical Oceanography
Replies: 0
Views: 1739

Three Assistant Prof's in Geological / Physical Oceanography

The Department of Physical Sciences at the Virginia Institute of Marine Science of the College of William & Mary, located in Gloucester Point, VA, seeks applicants for tenure-track faculty positions to begin July, 2012. Successful candidates will join a department that focuses on continental margin ...
by ckharris
Fri Sep 03, 2010 6:35 pm
Forum: ROMS Sediment
Topic: question about sediment.F
Replies: 2
Views: 2390

Re: question about sediment.F

HI There are versions of the code that include biodiffusion and bed consolidation, but I assume neither of these have been approved for distribution in the main trunk. So, defining these "ifdef options" will not result in any changes to the code. If you are accessing the CSTMS svn site, there are so...
by ckharris
Tue Jan 19, 2010 2:57 am
Forum: ROMS Discussion
Topic: How is the cohesive sediment treated in the latest ROMS?
Replies: 1
Views: 754

Re: How is the cohesive sediment treated in the latest ROMS?

There is an option to run a cohesive sediment model that is different from the non-cohesive model described in Warner's papers. Chris Sherwood (USGS) has been the main developer of this module, and he would know (better than me) the current state of the module. The cohesive model follows the model d...
by ckharris
Wed Nov 25, 2009 5:47 pm
Forum: ROMS Usage
Topic: option for wind forcing
Replies: 15
Views: 6366

Re: option for wind forcing

Question: Is it possible to include a time-series forcing for the surface momentum but neglect the surface heat fluxes? If so, how do I do this? BULK_FLUXES requires a time-series of wind speeds (which I have), but also specification of things that I don't have (air temperature, cloud cover, etc.). ...
by ckharris
Thu Oct 01, 2009 2:26 pm
Forum: Meetings/Workshops
Topic: Sediment Session at Ocean Sciences
Replies: 0
Views: 1266

Sediment Session at Ocean Sciences

Hello The following Ocean Sciences Special Session invites abstract submissions, and is especially relevant to sediment modeling efforts: GO04 Sediment processes I: transport and deposition in lakes, estuaries, coastal bays, and continental shelves The physical characteristics of lakes, estuaries, c...
by ckharris
Wed Jun 17, 2009 9:02 pm
Forum: ROMS Sediment
Topic: Sediment Bed Layers: Age
Replies: 10
Views: 4559

Re: Sediment Bed Layers: Age

In case anyone reads this thread in the future: John and I talked on the phone today and discussed the sediment bed model. We both agree that some of my changes may eventually be worked into the main trunk, but that they should be looked at more closely before doing so. My version now has three diff...
by ckharris
Tue Jun 16, 2009 4:00 pm
Forum: ROMS Sediment
Topic: Sediment Bed Layers: Age
Replies: 10
Views: 4559

Re: Sediment Bed Layers: Age

HI I only have a minute to post this: one plot is bed thickness using standard age dating; and 1mm (0.001 m) NEWLAYER_THICKNESS. I do not get new layers at day 200 when the second depositional cycle begins, even though there is a big gap in age there. The other figure is bed_age relative to the begi...
by ckharris
Mon Jun 15, 2009 9:07 pm
Forum: ROMS Sediment
Topic: Sediment Bed Layers: Age
Replies: 10
Views: 4559

Re: Sediment Bed Layers: Age

HI Thanks for spelling that out. I didn't get the behavior listed in (2), using standard ROMS, though it describes our test case pretty well. Until I changed the dating of the layers to mean the date when a deposit was started, I did not get a new layer during the second cycle of deposition in the t...
by ckharris
Mon Jun 15, 2009 7:47 pm
Forum: ROMS Sediment
Topic: Sediment Bed Layers: Age
Replies: 10
Views: 4559

Re: Sediment Bed Layers: Age

HI The layers were all initially 0.5 cm thick, and newlayer_thick is also 0.5 cm thick in this testcase. I did have a problem with the initial conditions in that the age of the layers was too old (initialized with an age > model's time(ng)). But, even after I fixed that (now initialize with age of l...
by ckharris
Mon Jun 15, 2009 6:21 pm
Forum: ROMS Sediment
Topic: Sediment Bed Layers: Age
Replies: 10
Views: 4559

Re: Sediment Bed Layers: Age

HI John thanks for the speedy response. for this test case, we have sediment deposit; then sit there for several days, then erode to a new steady state, stay there for several days, and then redeposit and remain at that state for several days. My cycle of erosion and deposition takes place over many...
by ckharris
Mon Jun 15, 2009 5:37 pm
Forum: ROMS Sediment
Topic: Sediment Bed Layers: Age
Replies: 10
Views: 4559

Sediment Bed Layers: Age

HI Could someone remind me how the sediment-bed-age is supposed to work? Is it supposed to be the date when the deposition BEGAN in the layer? or the date when deposition ENDED in the layer? I want my sediment layers to be <~ NEWLAYER_THICK; and needed to change the age dating during depositional cy...
by ckharris
Wed Mar 25, 2009 2:41 pm
Forum: Meetings/Workshops
Topic: 2010 Ocean Sciences Meeting - Call for Sessions
Replies: 0
Views: 1446

2010 Ocean Sciences Meeting - Call for Sessions

2010 Ocean Sciences Meeting - Call for Sessions "From Observation to Prediction in the 21st Century" is the theme for the 2010 Ocean Sciences Meeting which will be held February 22-26, 2010 in Portland Oregon. The Call for Sessions has just been posted - submissions are due May 29, 2009. For more in...
by ckharris
Fri Oct 06, 2006 4:00 pm
Forum: ROMS Information
Topic: shrinkwrapping?
Replies: 2
Views: 1548

shrinkwrapping?

HI

Is anyone working on implementing shrink-wrapping in ROMS so that calculations are not performed at land cells? We have a model grid that has 90,000 grid points, but only 20,000 are water. It is an estuarine environment that has some long tidal channels.

thanks
courtney
by ckharris
Fri Oct 06, 2006 3:56 pm
Forum: ROMS Information
Topic: ROMS Grid: what is essential?
Replies: 3
Views: 3267

ROMS Grid: what is essential?

HI What values are essential to getting a model grid that works? We want to run ROMS in the York River, Virginia. We got a copy of a good HEM3D grid from J.I. Kwan, and want to convert it to a ROMS grid file. HEM3D, however, does not seem to need to know anything about grid cells that are land so we...
by ckharris
Mon Nov 07, 2005 3:51 pm
Forum: ROMS Problems
Topic: Running version 2.2 on Solaris with MPI?
Replies: 0
Views: 1394

Running version 2.2 on Solaris with MPI?

HI I've gotten a version of the code that runs on a Linux Opteron-based cluster, but can not get it to run on our solaris Opteron-based cluster. Does anyone have success running ROMS 2.2 on Solaris with MPI. If so, which FFLAGS do you use? We are using the Sun compiler, mpif90 (on our system under /...