Given the more than 3 million volcanoes worldwide indicated by the work of Hillier & Watts (2007), one might be prone to wonder about the statistical significance of Gerlach's seven
subaerial volcanoes and three hydrothermal vent sites.
The greater contribution comes from
subaerial volcanoes (subaerial means «under the air», referring to land volcanoes).
Subaerial volcanoes are estimated to emit 242 million tonnes of CO2 per year (Mörner and Etiope (2002)-RRB-.
For example, using the 2010 ACM factor of 135 (Figure 1) to scale up features of present - day volcanism, Kilauea volcano scales up to the equivalent of 135 Kilauea volcanoes; scaling up all active
subaerial volcanoes evokes a landscape with the equivalent of about 9500 active present - day volcanoes [Siebert et al., 2010].
In order for
subaerial volcanoes to warm the ocean, they would have to be erupting on orders of magnitude larger than observed.
Not exact matches
Present - day carbon dioxide (CO2) emissions from
subaerial and submarine
volcanoes are uncertain at the present time.
This estimate includes both
subaerial and submarine
volcanoes, about in equal amounts.
Present - day carbon dioxide (CO2) emissions from
subaerial and submarine
volcanoes are uncertain at the present time.
Yet the USGS glibly claims that Gerlach's estimate includes both
subaerial and submarine
volcanoes in roughly equal amounts.