Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique

Through the processes of the biological pump, carbon is exported to the deep ocean in the form of dissolved and particulate organic matter. There are several ways by which downward export fluxes can be estimated. The great attraction of the 234Th technique is that its fundamental operation allows a downward flux rate to be determined from a single water column profile of thorium coupled to an estimate of POC/234Th ratio in sinking matter. We present a database of 723 estimates of organic carbon export from the surface ocean derived from the 234Th technique. Data were collected from tables in papers published between 1985 and 2013 only. We also present sampling dates, publication dates and sampling areas. Most of the open ocean Longhurst provinces are represented by several measurements. However, the Western Pacific, the Atlantic Arctic, South Pacific and the South Indian Ocean are not well represented. There is a variety of integration depths ranging from surface to 220m. Globally the fluxes ranged from -22 to 125 mmol of C/m**2/d. We believe that this database is important for providing new global estimate of the magnitude of the biological carbon pump.

Atlantic 231Pa/230Th and biogenic opal compilation of the Holocene and the LGM

The strength and geometry of the Atlantic meridional overturning circulation is tightly coupled to climate on glacial-interglacial and millennial timescales, but has proved difficult to reconstruct, particularly for the Last Glacial Maximum. Today, the return flow from the northern North Atlantic to lower latitudes associated with the Atlantic meridional overturning circulation reaches down to approximately 4,000 m. In contrast, during the Last Glacial Maximum this return flow is thought to have occurred primarily at shallower depths. Measurements of sedimentary 231Pa/230Th have been used to reconstruct the strength of circulation in the North Atlantic Ocean, but the effects of biogenic silica on 231Pa/230Th-based estimates remain controversial. Here we use measurements of 231Pa/230Th ratios and biogenic silica in Holocene-aged Atlantic sediments and simulations with a two-dimensional scavenging model to demonstrate that the geometry and strength of the Atlantic meridional overturning circulation are the primary controls of 231Pa/230Th ratios in modern Atlantic sediments. For the glacial maximum, a simulation of Atlantic overturning with a shallow, but vigorous circulation and bulk water transport at around 2,000 m depth best matched observed glacial Atlantic 231Pa/230Th values. We estimate that the transport of intermediate water during the Last Glacial Maximum was at least as strong as deep water transport today.

Sämmtliche Werke.

Vol. 1. Erläuterungen und Ergänzungen zum Wesen des Christenthums.- Vol. 2. Philosophische Kritiken und Grundsätze.- Vol. 3. Gedanken über Tod und Unsterblichkeit.- Vol. 4. Geschichte der neuern Philosophie von Bacon von Verulam bis Benedict Spinoza.- Vol. 5. Darstellung, Entwicklung und Kritik der Leibnitz'schen Philosophie.- Vol. 6. Pierre Bayle, ein Beitrag zur Geschichte der Philosophie und Menschheit.- Vol. 7. Das Wesen des Christenthums.- Vol. 8. Vorlesungen über das wesen der Religion.- Vol. 9. Theogonie nachder Quellen des classisischen, hebräischen und christlichen Alterthums.- Vol. 10. Gottheit, Freiheit und Unsterblichkeit vom Standpunkte der Anthropologie.

Odes and epodes,

Edition statement from cover p. [1].

The story of Teapot Dome.

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Introduction to the history of science ...

I. From Homer to Omar Khayyam.--II. From Rabbi Ben Ezra to Roger Bacon, pt. 1-2.--III. Science and learning in the fourteenth century, pt. 1-2.

Admirals of the British navy;

Introduction.--Jellicoe.--Burney.--Madden.--Philimore.--Bacon.--De Robeck.--Napier.--Brock.--Halsey.--Pakenham.--Paine.--Trywhitt.

Letter of transmittal and synopsis of report on New Orleans Ship Canal and Terminal /

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The essays; or, Counsels civil and moral. First published in 1597, and as he left them newly written.

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English men of letters /

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Das Shakespeare-idol, Francis Bacons : mit neuen Faksimiles in Autotypie und Lichtdruck /

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A Baconian summary.

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The recreation of his age /

"This book is issued by Leslie Chaundy ... who purchased upon the death of Dr. Daniel all the remaining works of the Daniel Press."--Slip tipped-in.