# Attribution and source notices

## NOAA ETOPO 2022

NOAA National Centers for Environmental Information. 2022: ETOPO 2022 Global
Relief Model. DOI: 10.25921/fd45-gt74. ETOPO 2022 is made available with a CC0
public-domain dedication. Not for navigation.

## Natural Earth

Natural Earth vector data are in the public domain.

## HydroRIVERS / HydroSHEDS

Lehner, B. and Grill, G. (2013). Global river hydrography and network routing:
baseline data and new approaches to study the world's large river systems.
Hydrological Processes, 27(15), 2171–2186. HydroRIVERS is distributed under the
HydroSHEDS license. Downloading and using it indicates acceptance of that license.

## HydroLAKES

Messager, M. L., Lehner, B., Grill, G., Nedeva, I., and Schmitt, O. (2016).
Estimating the volume and age of water stored in global lakes using a
geo-statistical approach. Nature Communications 7, 13603. CC-BY-4.0.

## EarthByte / GPlates

EarthByte GPlates sample datasets are CC-BY-3.0. Cite the original references
listed by EarthByte for the specific feature collections, including Matthews et al.
(2016) and Müller et al. (2016) where applicable.

## NOAA PSL NCEP/DOE Reanalysis-2

NCEP/DOE Reanalysis-2 data provided by the NOAA Physical Sciences Laboratory,
Boulder, Colorado, USA. Acknowledge NOAA PSL in publications and distributed work.