# **Possible purposes for these assessments (time we have to do the assessment)**

-   Intermediate answers (weeks): following & more accurate than the
    response models, but with higher uncertainty than longer-term
    studies

-   Dose reconstruction, esp. at low levels (years)

-   Decontamination / cleanup planning (days -- months)

-   Long-term monitoring planning (days -- weeks)

+---------------+-------------------------------+----------------------+
| **Scenario**  | **High**                      | **Medium**           |
+---------------+-------------------------------+----------------------+
| Scenario 1:   | -   Users: Multidisciplinary  | -   Multi-phase      |
| Sarin release |     teams of experts          |     transport        |
| (short range, |                               |     (priority is     |
| short term,   | -   High accuracy             |     agent-dependent) |
| non-reactive) |                               |                      |
|               | -   Multi-scale problem /     | ```{=html}           |
|               |     interface                 | <!-- -->             |
|               |                               | ```                  |
|               | -   Evaporation source term   | -   Health-effects   |
|               |                               |                      |
|               | -   Terrain                   |                      |
|               |                               |                      |
|               | -   Complex meteorology       |                      |
|               |                               |                      |
|               | -   Time-dependence (input &  |                      |
|               |     output)                   |                      |
|               |                               |                      |
|               | -   High resolution           |                      |
|               |                               |                      |
|               | -   Urban models (including   |                      |
|               |     urban met and terrain     |                      |
|               |     database of input         |                      |
|               |     information)              |                      |
|               |                               |                      |
|               | -   Indoor-Outdoor            |                      |
|               |     interactions              |                      |
|               |                               |                      |
|               | -   Probabilistic Answers     |                      |
|               |                               |                      |
|               | -   Model credibility         |                      |
+---------------+-------------------------------+----------------------+

+------------+--------------------------------------+-----------------+
| Scenario   | -   Users: Multidisciplinary teams   | -   Health      |
| 2: Dirty   |     of experts                       |     effects     |
| Nuke       |                                      |                 |
| (waste     | -   Calibration by measurements      | -   Ingestion   |
| with       |                                      |     pathway     |
| explosive, | -   High accuracy                    |                 |
| short      |                                      | -   Inhalation  |
| range,     | -   Multi-scale problem / interface  |                 |
| long term, |                                      | -   External    |
| non        | -   Explosive source term            |     radiation   |
| -reactive) |                                      |     (e.g.,      |
|            | -   Deposition / Resuspension        |                 |
|            |                                      |    groundshine) |
|            | -   Multi-phase transport            |                 |
|            |                                      | -   Cumulative  |
|            | -   Terrain                          |     dose/risk   |
|            |                                      |                 |
|            | -   Complex meteorology              |                 |
|            |                                      |                 |
|            | -   Time-dependence (input & output) |                 |
|            |                                      |                 |
|            | -   High resolution                  |                 |
|            |                                      |                 |
|            | -   Urban models (including urban    |                 |
|            |     met and terrain database of      |                 |
|            |     input information)               |                 |
|            |                                      |                 |
|            | -   Indoor-Outdoor interactions      |                 |
|            |                                      |                 |
|            | -   Probabilistic Answers            |                 |
|            |                                      |                 |
|            | ```{=html}                           |                 |
|            | <!-- -->                             |                 |
|            | ```                                  |                 |
|            | -   Model credibility                |                 |
+------------+--------------------------------------+-----------------+

+---------------+-------------------------------+----------------------+
| Scenario 3:   | -   Users: Multidisciplinary  | -   Urban models     |
| Nuclear Power |     teams of experts          |     (including urban |
| Plant (plane  |                               |     met and terrain  |
| causing core  | -   Calibration by            |     database of      |
| meltdown or   |     measurements              |     input            |
| other power   |                               |     information)     |
| plant         | -   High accuracy             |                      |
| accident,     |                               | -   Indoor-Outdoor   |
| long-term,    | -   Multi-scale problem /     |     interactions     |
| long-range)   |     interface                 |                      |
|               |                               | ```{=html}           |
|               | -   Specialized source term   | <!-- -->             |
|               |                               | ```                  |
|               | -   Radioactive decay         | -   Health effects   |
|               |                               |                      |
|               | -   Deposition / Resuspension | -   Ingestion        |
|               |                               |     pathway          |
|               | -   Multi-phase transport     |                      |
|               |                               | -   Inhalation       |
|               | -   Terrain                   |                      |
|               |                               | -   External         |
|               | -                             |     radiation (e.g., |
|               |                               |     groundshine)     |
|               | -   Complex meteorology       |                      |
|               |                               | ```{=html}           |
|               | -   Time-dependence (input &  | <!-- -->             |
|               |     output)                   | ```                  |
|               |                               | -   Cumulative       |
|               | -   High resolution           |     dose/risk        |
|               |                               |                      |
|               | -   Probabilistic Answers     |                      |
|               |                               |                      |
|               | ```{=html}                    |                      |
|               | <!-- -->                      |                      |
|               | ```                           |                      |
|               | -   Model credibility         |                      |
+---------------+-------------------------------+----------------------+

+------------+-----------------------------------+--------------------+
| Scenario   | -   Users: Multidisciplinary      | -   Multi-phase    |
| 4: Anthrax |     teams of experts              |     transport      |
| c          |                                   |     (priority is   |
| rop-duster | -   High accuracy                 |                    |
| (l         |                                   |   agent-dependent) |
| ong-range, | -   Multi-scale problem /         |                    |
| long-term) |     interface                     | -   Biological     |
|            |                                   |     decay effects  |
|            | -   Deposition / Resuspension     |                    |
|            |                                   | ```{=html}         |
|            | -   Back-calculation              | <!-- -->           |
|            |                                   | ```                |
|            | -   Terrain                       | -   Health-effects |
|            |                                   |                    |
|            | -   Complex meteorology           | -   Cumulative     |
|            |                                   |     dose           |
|            | -   Time-dependence (input &      |                    |
|            |     output)                       |                    |
|            |                                   |                    |
|            | -   High resolution               |                    |
|            |                                   |                    |
|            | -   Urban models (including urban |                    |
|            |     met and terrain database of   |                    |
|            |     input information)            |                    |
|            |                                   |                    |
|            | -   Indoor-Outdoor interactions   |                    |
|            |                                   |                    |
|            | -   Probabilistic Answers         |                    |
|            |                                   |                    |
|            | ```{=html}                        |                    |
|            | <!-- -->                          |                    |
|            | ```                               |                    |
|            | -   Model credibility             |                    |
+------------+-----------------------------------+--------------------+
| Other      | -   Chemistry                     |                    |
| issues     |                                   |                    |
|            | -   Importance of multi-phase     |                    |
|            |     transport is agent-dependent  |                    |
|            |                                   |                    |
|            | -   Importance of biological      |                    |
|            |     decay is agent-specific       |                    |
|            |                                   |                    |
|            | -   Model needs to be able to     |                    |
|            |     handle different source       |                    |
|            |     configurations (line, area,   |                    |
|            |     etc.)                         |                    |
+------------+-----------------------------------+--------------------+