National Park Management
Access the relevant website and a step-by-step guide for using the website.
WHAT ARE CRITICAL LOADS AND WHY DO THEY MATTER?
IDENTIFY RESOURCES AT RISK FROM N OR S AIR POLLUTION
NPS PARK AIR PROFILES
CONDITIONS AND TRENDS OF POLLUTANTS AND ECOSYSTEM HEALTH IN NPS UNITS
REPORTS ON CRITICAL LOADS AND CL EXCEEDANCES WITHIN NPS UNITS
INTERACTIVE MAPS OF CRITICAL LOADS AND EXCEEDANCES
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Step-by-step instructions
Summarizes the data available for ecosystem components known to respond to N and S deposition within a National Park. It allows you to quickly assess if each component is in good, fair, or poor condition based on the most recent three-year average of total N or total S deposition.
1. Select the NPS Unit of interest.
2. Select either “Nitrogen deposition” or “Sulfur Deposition” and click “View Data”.
3. Under the Summary tab you will find the overall condition for “Ecosystem Responses”.
4. Under the Trends tab you will find the trend in max/median/min deposition.
5. Under the Composition tab you will find the N or S species that are modeled in deposition.
6. Under the Ecosystem Response tab you will see the range of exceedances relative to the two condition benchmarks for each ecosystem component.