Outdoor Chemical Dispersion Consequence Model - Comprehensive Model of an Outdoor Chemical Dispersion Terrorist Attack - 12-2020

Oct 3, 2026

Uploaded by Fahsai

Outdoor Chemical Dispersion Consequence Model provides dynamic simulation of outdoor chemical release events to support understanding of potential chemical terrorist impacts. Developed for use through the CAPT/CCAT user-friendly graphical interface, it lets users customize parameters such as chemical identity, event and payload characteristics, release location, and dispersion settings, then analyze results. The model supports assessment of human health effects across scenarios including city centers, urban areas, stadiums, subway venting, point sources, mobile sprayers, and attacks on supply chains, and evaluates mitigation options and the locations most at risk. Future enhancements target emerging threats.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages1

Reading Time3 min

AccessFree to download

Outdoor Chemical Dispersion Consequence Model

Dynamic modeling in a user-friendly interface

Simulation analysis to assess potential chemical terrorist threats

Potential for future enhancement

Industry partner

Contact

Chemical Security Analysis Center Outdoor Chemical Dispersion Consequence Model COMPREHENSIVE MODEL OF AN OUTDOOR CHEMICAL DISPERSION TERRORIST ATTACK Releasing chemicals outdoors as inhalation hazards was first demonstrated on a large-scale in World War I when forces on both sides used chlorine, phosgene, and mustard gas as offensive weapons resulting in both physical and psychological hazards to even the most highly trained troops. Although successful terrorist use of chemical weapons in an outdoor setting has been rare, it has the potential to cause large impacts, necessitating the need for outdoor release scenarios to be modeled and understood. DYNAMIC MODELING IN A USER-FRIENDLY INTERFACE The Outdoor Chemical Dispersion Consequence Model provides the capability to simulate the outdoor dispersion of a wide variety of chemical events using an intuitive graphical user interface via the Countermeasure Assessment and Planning Tool (CAPT) / Chemical Consequence Assessment Tool (CCAT) . CAPT / CCAT allows users to easily customize simulation parameters (e.g. , chemical, outdoor event size, chemical payload, release location, or outdoor dispersion parameters) and analyze results to better understand the potential impact of a chemical terrorist event. The CAPT / CCAT Home Page The advanced analytics CAPT / CCAT page analyzing an outdoor chemical dispersion scenario. SIMULATION ANALYSIS TO ASSESS POTENTIAL CHEMICAL TERRORIST THREATS The Chemical Dispersion Consequence Model answers difficult questions, such as: 􀂃 What are the human health impacts of events such as: outdoor chemical dispersion attacks on city centers, urban events, and outdoor stadiums via multiple drones; venting of gases from subways, point sources, mobile sprayers, and aerial devices; or attacks on the chemical supply chain? 􀂃 Can prevention or mitigation mechanisms (detectors, exclusion zones, etc.) be put in place to prepare for or reduce the impact of a chemical terrorist event? 􀂃 What locations and events pose the largest potential threat due to an outdoor chemical terrorist event? POTENTIAL FOR FUTURE ENHANCEMENT With newly arising and evolving terrorist threats, the Outdoor Chemical Dispersion Consequence Model can be enhanced to estimate the impact of emerging chemical terrorist threats. INDUSTRY PARTNER CAPT / CCAT is owned by the Department of Homeland Security Science and Technology Directorate and Battelle Memorial Institute, Columbus, Ohio is the performer for this task. Contact Us: [csacinfo@st.dhs.gov](csacinfo@st.dhs.gov) scitech.dhs.gov 12-2020

FAQs

What does the Outdoor Chemical Dispersion Consequence Model do?

It simulates the outdoor dispersion of a wide variety of chemical events and supports analysis of potential impacts from outdoor chemical releases.

What can users customize in CAPT/CCAT simulations?

Users can customize simulation parameters such as the chemical, outdoor event size, payload, release location, and outdoor dispersion parameters, then review the results.

How does the model help assess threats and preparedness?

It answers questions about human health impacts across multiple outdoor release scenarios and evaluates whether prevention or mitigation mechanisms (e.g., detectors, exclusion zones) can reduce impacts.

Oct 3, 2026

Uploaded by Fahsai