The success of the first edition of this book encouraged me to write a companion text entitled Introduction to Atmospheric Chemistry (Cambridge University Press, 2000). On the occasion of the publication of the latter text, the opportunity has been taken to issue a second edition of Basic Physical Chemistry for the Atmospheric Sciences.

In this second edition a number of minor (and a few major) errors have been corrected, and the text has been clarified in several places. I hope that, taken together, these two companion volumes will provide students, researchers, and even the interested layperson, with a sound introduction to the fascinating subject of atmospheric chemistry, which has emerged as a discipline in its own right in just the past few decades.

Comments on this book, which will be gratefully received, can be sent by e-mail to: phobbs@atmos.washington.edu. Current information on the book, including any errata, can be found on http://cargsun2.atmos. washington.edu/-debbie/HobbsWebPage/BasicChem/Info.html.