1. PROJECT
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Title: The Atlantic/Pacific Atmospheric Moisture Budget Asymmetry: The Role of Atmospheric Moisture Transport
Dates: September 2014 to April 2018
Funding organisation: NERC
Grant no.: NE/L002566/1


2. DATASET
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Title: Catchment Boundaries of Ocean Drainage Basins
Description: This dataset contains discretized estimates of the catchment boundaries surrounding the five ocean drainage basins (Atlantic, Pacific, Indian, Arctic and Southern). The catchment boundaries were used to calculate atmospheric moisture fluxes across the catchment boundaries and to initialize airmass trajectories from each point on multiple vertical levels.

Publication Year: 2019

Creator: Philip Craig
Organisation: University of Reading
Rights-holder: Philip Craig

Sources: The catchment boundaries were estimated from from various datasets of river catchment boundaries and the ETOPO5 topography and bathymetry dataset.
	 5-minute Gridded Global Relief Data (ETOPO5). National Geophysical Data Center, NOAA. doi:10.7289/V5D798BF
	 Australian Hydrological Geospatial Fabric (Geofabric) version 3.0. Bureau of Meteorology, Canberra. http://www.bom.gov.au/water/geofabric/
	 Atlas of Canada 1,000,000 National Framework Data. Natural resources of Canada, Government of Canada.
	 Ice Sheet Mass Balance Inter-Comparison Exercise (IMBIE). http://imbie.org/
	 Hydrological data and maps basd on Shuttle Elevation Derivatives at multiple Scales (HydroSHEDS) version 1.1. United States Geological Survey. www.hydrosheds.org

3. TERMS OF USE
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Copyright Philip Craig 2019. This dataset is licensed by the rights-holder(s) under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/.

4. CONTENTS
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File listing

AfME_traj_release.txt (Africa & Middle East)
Am_traj_release.txt (Americas)
ArA_traj_release.txt (Arctic Atlantic sector)
ArI_traj_release.txt (Arctic Indian sector)
ArP_traj_release.txt (Arctic Pacific sector)
SEA_traj_release.txt (South-East Asia)
SOA_traj_release.txt (Southern Atlantic sector)
SOI_traj_release.txt (Southern Indian sector)
SOP_traj_release.txt (Southern Pacific sector)
documentation.pdf (description of datasets used and method)

The .txt files contain the longitude/latitude co-ordinates of points along the catchment boundaries. Their format is:

Longitude, Latitude co-ordinates defining the ....... continental divide.
Used to release back trajectories.

xxx  points defined in this file.

lon   lat

(longitude range is either (-180,180) or (0,360) depending on whether the catchment boundary crosses the zero meridian or international date line)

5. METHOD and PROCESSING
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Please refer to documentation.pdf for details on the datasets and method for constructing the catchment boundaries.