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Abstract:
This report describes two tasks. The first is the conversion of the combined ICM/SEDZLJ computer codes to parallel operation. The conversion results in order-of-magnitude speed-up of the combined codes with no adverse effects on the computation. Results from parallel operation are identical to serial operation for up to 128 processors. The second task is the incorporation of an initial toxics code into the combined ICM/SEDZLJ codes. Two toxicants are considered. The first partitions to clay/silt particles in the water and bed sediments. The second partitions to particulate organic carbon. Treatment of the new variables in the water column is analogous to the three-dimensional, finite-volume approach used for the other ICM state variables. In the bed, toxics are considered to occupy a single well-mixed layer roughly 10 cm in thickness. This approach is adopted from the ICM sediment diagenesis model. Particle deposition and erosion and the resulting effects on bed thickness are taken from SEDZLJ. This framework forms the initial basis for a unified model of the aquatic carbon cycle, of particulate transport, and of toxicant processes.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. |
| Pages: |
37 |
| Report Date: |
Mar 2012 |
| Report Number: |
A923755 |
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Keywords relating to this report:
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