In 2012, he and his co-authors published a paper describing a method for defining the upwind area that contributes evaporation for a downwind region's precipitation, known as a precipitationshed. Patrick's current PhD work probes deeper into the questions begun in the 2012 paper, specifically exploring how social-ecological systems become more vulnerable or more resilient with changes to moisture recycling regimes.
Prior to joining the centre, Patrick founded an environmental consulting firm, with projects exploring water security in drylands, ecosystem service trade-offs, and climate change vulnerability and adaptation. Additionally, he has worked with SEI and UNEP on a report exploring trade-offs between water use efficiency and ecosystem services, as well as co-authoring a book chapter on drought, conflict, and food policy, in a publication sponsored by the African Centre for the Constructive Resolution of Disputes (ACCORD).
Patrick holds a MSc from the department of Civil and Environmental Engineering at the University of Washington, and BA in Biology from Willamette University.
Research news | 2016-03-23
Why landscapes that regulate downwind rainfall are key producers of ecosystem services
Research news | 2012-03-12
New method tracks path of water, from where it starts as evaporation to where it falls as rain
2014 - Journal / article
The contribution of land evaporation to local and remote precipitation (i.e., moisture recycling) is of significant importance to sustain water resources and ecosystems. But how important are different evaporation components in sustaining precipitation? This is the first paper to present moisture recycling metrics for partitioned evaporation. In the companion paper, Part 1, evaporation was partitioned into vegetation intercept...
2014 - Journal / article
Recent research has revealed that upwind land-use changes can significantly influence downwind precipitation. The precipitationshed (the upwind ocean and land surface that contributes evaporation to a specific location's precipitation) may provide a boundary for coordination and governance of these upwind–downwind water linkages. We aim to quantify the variability of the precipitationshed boundary to determine whether there ...
2012 - Journal / article
Publication review It is well known that rivers connect upstream and downstream ecosystems within watersheds. Here we describe the concept of precipitationsheds to show how upwind terrestrial evaporation source areas contribute moisture for precipitation to downwind sink regions. We illustrate the importance of upwind land cover in precipitationsheds to sustain precipitation in critically water stressed downwind areas, spec...