In this important treatise he used data from work by Vilhelm Bjerknes published in Dynamical meteorology and hydrography and constructed, in his own words:
Sa ganitong mahalagang treatise siya na ginamit ng data mula sa trabaho sa pamamagitan ng Vilhelm Bjerknes-publish sa Dynamical meteorolohiya at hydrography at itinayo, sa kanyang sariling salita: