Nitrate transport velocity data in the global unsaturated zones.

ABSTRACT: Nitrate pollution in groundwater, which is an international problem, threatens human health and the environment. It could take decades for nitrate to transport in the groundwater system. When understanding the impacts of this nitrate legacy on water quality, the nitrate transport velocity (v_N) in the unsaturated zone (USZ) is of great significance. Although some local USZ v_N data measured or simulated are available, there has been no such a dataset at the global scale. Here, we present a Global-scale unsaturated zone Nitrate transport Velocity dataset (GNV) generated from a Nitrate Time Bomb (NTB) model using global permeability and porosity and global average annual groundwater recharge data. To evaluate GNV, a baseline dataset of USZ v_N was created using

SUBMITTER: Yang C 

PROVIDER: S-EPMC9553929 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature