This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/hyp.13629 This article is protected by copyright. All rights reserved. Mohammed Aaron A. (Orcid ID: 0000-0001-9037-1283) Cey Edwin E. (Orcid ID: 0000-0002-4819-0216) Title: Effects of antecedent moisture and macroporosity on infiltration and water flow in frozen soil Short Title: Macropores and frozen soil infiltration Authors: Freda Pittman 1 , Aaron Mohammed, and Edwin Cey* Affiliations: Department of Geoscience, University of Calgary, Calgary, Alberta, Canada *Corresponding author (ecey@ucalgary.ca) Keywords: infiltration, frozen soil, macropores, preferential flow, surface runoff, antecedent soil moisture, soil freeze-thaw Abstract Infiltration into frozen soil plays an important role in soil freeze-thaw and snowmelt-driven hydrological processes. To better understand the complex thermal energy and water transport mechanisms involved, the influence of antecedent moisture content and macroporosity on infiltration into frozen soil was investigated. Ponded infiltration experiments on frozen 1 Imperial Oil Limited, 505 Quarry Park Boulevard, Calgary, Alberta, Canada