Fred M. Phillips David A. Stonestrom R. Dave Evans Peter C. Hartsough Brent D. Newman Robert G. Striegl Michelle Ann Walvoord 2004 <p><span>We appreciate the comment by Jackson </span><i>et al.</i><span> (</span><i>1</i><span>), which underscores two points made in our recent paper (</span><i>2</i><span>): (i) that desert subsoil nitrate (NO</span>^–₃<span>) inventories are spatially highly variable, and thereby warrant substantial measurement efforts to reduce uncertainty in global extrapolations, and (ii) that Chihuahuan Desert subsoil NO</span>^–₃<span> inventories tend to be much smaller than inventories in other western U.S. deserts.</span></p> application/pdf 10.1126/science.1095033 en American Association for the Advancement of Science Response to comment on "A reservoir of nitrate beneath desert soils" article