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Papahānaumokuākea Expansion

Papahānaumokuākea Expansion

Posted September 26, 2016

On August 26, President Obama signed a proclamation expanding the Papahānaumokuākea Marine National Monument from 139,797 mi² (362,073 km²) to 582,578 mi² (1,508,870 km²). This extended the monument boundary westward of -163° longitude out to Hawaii’s Exclusive Economic Zone (EEZ) at 200 nmi offshore. Voyager’s map layer for this monument has been updated and now reflects the expanded boundary. For comparison, below are Voyager screenshots of the monument before and after this expansion.

Voyager screenshot of Papahānaumokuākea after expansion in light blue (click to view in Voyager); cyan outline shows Hawaii EEZ, dashed yellow lines show the antimeridian and Tropic of Cancer:

Voyager screenshot of Papahānaumokuākea before expansion (2006-2016):

PacIOOS also provides a Web Map Service (WMS) and Web Feature Service (WFS) for this data set. These interoperable Open Geospatial Consortium (OGC) standards helps users who may want to incorporate map imagery of this layer into other mapping applications. View metadata below for access URLs. Note that both polygon and polyline formats are provided for this dataset because the monument boundary now spans the antimeridian (+/-180° longitude, a.k.a. international date line) making it difficult to display in some GIS software applications without showing a division at the antimeridian.

• Expanded boundary – polygon: hi_noaa_nwhi_papahanaumokuakea
• Expanded boundary – polyline: hi_noaa_nwhi_papahanaumokuakea_line
• Previous boundary (2006-2016): hi_noaa_nwhi_papahanaumokuakea_2006

Click here for further information on Papahānaumokuākea Marine National Monument and its recent expansion.