What does NACNEMS stand for?

NACNEMS stands for North American Cooperative Network of Enhanced Measurement

This definition appears very frequently

collaborated under the International Consortium for Atmospheric Research on; the North American Cooperative Network of Enhanced Measurement...

North American Cooperative Network of Enhanced Measurement Sites (NACEMS) summer-fall 1988 Trainer et al. [1993] and Parrish et al. [1993]