From csdms
[edit] GNE
Contents |
[edit] Metadata
| Modeler information | |
|---|---|
| First name | Sybil |
| Last name | Seitzinger |
| Type of contact | Project manager |
| Institute / Organization | Rutgers - Institute of Marine & Coastal Sciences |
| Postal address 1 | 71 Dudley Rd. |
| Postal address 2 | |
| Town / City | New Brunswick |
| Postal code | 08901-85 |
| State | New Jersey |
| Country | USA |
| Email address | sybil@marine.rutgers.edu |
| Phone | 732-932-6555 |
| Fax | 732-932-1792 |
| Additional modeler information | |
|---|---|
| First name | Emilio |
| Last name | Mayorga |
| Type of contact | Model developer |
| Institute / Organization | |
| Postal address 1 | |
| Postal address 2 | |
| Town / City | |
| Postal code | |
| State | |
| Country | |
| Email address | |
| Phone | |
| Fax | |
| Additional modeler information | |
|---|---|
| First name | John |
| Last name | Harrison |
| Type of contact | Model developer |
| Institute / Organization | |
| Postal address 1 | |
| Postal address 2 | |
| Town / City | |
| Postal code | |
| State | |
| Country | |
| Email address | |
| Phone | |
| Fax | |
| Model identity | |
|---|---|
| Model type | Modular |
| Spatial dimensions | |
| Spatial extent | |
| Model domain | , |
| One-line model description | Set of biogeochemical sub-models that predicts river export |
| Extended model description | A multi-element (N, P, Si, C), multi-form (particulate, dissolved, organic, inorganic) set of biogeochemical sub-models that predicts annual river exports to the coast as a function of basin-aggregated natural and human impact characteristics; GNE is a generic framework used to run the basin models. |
| Model technical information | |
|---|---|
| Supported platforms | Linux, Windows |
| Other platform | |
| Programming language | Python |
| Other program language | |
| Code optimized | Single Processor |
| Start year development | 2002 |
| Does model development still take place? | Yes |
| If above answer is no, provide end year model development | |
| Model availability | As code, As teaching tool |
| Source code availability (Or provide future intension) | Through owner |
| Source web address | |
| Program license type | Other |
| Program license type other | -- |
| OpenMI compliant | No but possible |
| CCA component | No but possible |
| IRF interface | No but possible |
| Memory requirements | minimal |
| Typical run time | less than 1 minute after preprocessing |
| Input - Output description | |
|---|---|
| Describe input parameters | Source inputs consist of global, spatially distributed (GIS) raster datasets: hydrological properties (river basin systems, runoff, reservoirs, irrigation, rainfall), topographic slope, land use, agricultural N & P inputs (fertilizer, manure), atmospheric N deposition, sewage, N fixation, etc. |
| Input format | ASCII, Binary |
| Other input format | |
| Describe output parameters | Primary outputs: N, P, Si, and C yields and loads by river basin and nutrient form. Secondary outputs: Source attribution by nutrient form and main natural and anthropogenic inputs to watersheds. Total Suspended Solids are also predicted. |
| Output format | ASCII |
| Other output format | |
| Pre-processing software needed? | No |
| Describe pre-processing software | |
| Post-processing software needed? | No |
| Describe post-processing software | |
| Visualization software needed? | Yes |
| If above answer is yes | ESRI, IDL, Matlab |
| Other visualization software | Most GIS software |
| Process description model | |
|---|---|
| Describe processes represented by the model | Natural, agricultural, atmospheric, and direct human (sewage and P detergents) inputs; effect of hydrological functioning; generalized loss of nutrients in soils and groundwater; loss in rivers, reservoirs, and through consumptive water withdrawals (irrigation). |
| Describe key physical parameters and equations | Net N & P land surface balance (from inputs, incl. atm. deposition) modulated with calibrated runoff relationships to estimate exports to streams; point sources calculated from socioecon. and sewage treatment information; reservoir and consumptive water withdrawal loss using physical relationships. |
| Describe length scale and resolution constraints | Limited by resolutn of input & river systems data; basins < 20,000 km2 currently poorly represented |
| Describe time scale and resolution constraints | Operates at annual scale; monthly-seasonal time steps are being explored. |
| Describe any numerical limitations and issues | Concerns about extrapolations beyond range of data used for model calibration and parameterization. |
| Model testing | |
|---|---|
| Describe available calibration data sets | Calibration data consist of compilations of river N, P, Si and C annual yields by form. |
| Upload calibration data sets if available: | |
| Describe available test data sets | Global (GEMS-GLORI), regional, national and literature compilations. A subset used for validation. |
| Upload test data sets if available: | |
| Describe ideal data for testing | Robust river nutrient fluxes near the mouth representative of annual, contemporary conditions. |
| Users groups model | |
|---|---|
| Do you have current or future plans for collaborating with other researchers? | Model is the result of an international collaboration that is a UNESCO-IOC workgroup (Global NEWS). |
| Documentation model | |
|---|---|
| Provide key papers on model if any | Papers published in Global Biogeochem. Cycles listed on Global NEWS website; code not published yet. |
| Is there a manual available? | Yes |
| Upload manual if available: | |
| Model website if any | http://www.marine.rutgers.edu/globalnews/ |
| Model forum / discussion board | |
| Additional comments | |
|---|---|
| Comments | Particulates model is regression-based, while dissolved model is more conceptual-mechanistic. Conceptual framework and data sets in development since 2002. Integrated modeling code framework (GNE) developed in 2007; currently tested on Windows only, but can be easily adapted to other platforms. |
