NACP Investigators have organized several interim synthesis activities to evaluate and intercompare models and observations at local and regional scales for the period 2000 - 2005. These activities are open to all investigators who have data or model results for North America.

For more information on the background and status of interim synthesis activities, please refer to this presentation given at the 8th International Carbon Dioxide Conference (icdc8) in September of 2009.

Four interim synthesis activities are being conducted:

1. Site-level Interim Synthesis
2. Regional and Continental Interim Synthesis
3. Mid-continent Intensive Interim Synthesis
4. Non-CO₂ Greenhouse Gases