this dataset is emerging from a PhD thesis by Phil Craig
Craig (2018) The Atlantic/Pacific atmospheric moisture budget asymmetry: the role of atmospheric moisture transport. PhD Thesis, University of Reading (https://doi.org/10.48683/1926.00084855)

and is associated with a paper to be submitted:
Craig, Ferreira & Methven (2023) A Lagrangian perspective on the Atlantic and Pacific Precipitation-Evaporation asymmetry. <to be submitted to JGR Atmospheres>