For the past two months, the Murphy group has been Characterizing Ontario Nitrogen Transport and Chemical Transformations (CONTACT). We have been using the AIM-IC system to make hourly measurements of water-soluble gases and PM2.5 in the atmosphere. At the same time, the QC-TILDAS is being used to measure surface-atmosphere exchange of NH3 by eddy covariance. Soil properties (temperature, moisture) and nitrogen content are being measured during the campaign to help understand the importance of bidirectional flux to ammonia surface exchange. As you can see, we’ve been using the SOCAAR MAPLE van in beautiful Egbert Ontario. Stay tuned for some exciting results!