1. Lamont‐Doherty Earth Observatory Columbia University Palisades NY USA
2. NASA Goddard Institute for Space Studies New York NY USA
3. Atmospheric Chemistry Observations and Modeling Laboratory National Center for Atmospheric Research Boulder CO USA
4. Earth Physics and Astrophysics Department Universidad Complutense de Madrid Madrid Spain
5. Department of Earth, Atmospheric and Planetary Sciences Purdue University West Lafayette IN USA