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.

Our expectation is that the interim syntheses will be completed in February 2009, and final results will be presented at the NACP Investigators meeting.

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