What is requested? The Group on Earth Observations (GEO) was established in July 2003 to begin development of the Global Earth Observation System of Systems (GEOSS). GEO is an international partnership espousing the free exchange of Earth observational data. The US participates in GEO and GEOSS through the Interagency Working Group on Earth Observations (IWGEO), a collection of 15 Federal agenc...

Typical earth system models involve coupled model components in high performance computing (HPC) environments. There are two emerging component-based frameworks for developing HPC applications. The Earth System Modeling Framework (ESMF), funded by NASA Earth System Technology Office (ESTO) Computational Technologies (CT) Project, defines a domain specific component interface for earth system mo...

a Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA b Department of Geoscience, University of Calgary, Calgary, AB, Canada c Department of Earth and Planetary Science, Washington University, St. Louis, MO 63130, USA d Department of Earth Sciences, Durham University, Durham, DH1 3LE, UK e Center for Applied Energy Research and Department of Earth & Environm...

Population regulation results from an interplay of numerous intrinsic and external factors, and for many insects cannibalism is such a factor. This study confirms a previously-reported observation that sublethal exposure to the fossilized remains of diatoms (i.e. diatomaceous earth) increases net fecundity (eggs produced minus eggs destroyed/day) of flour beetles, Tribolium confusum. The aim wa...

C. D. K. Herd1, L. L. Tornabene2, T. J. Bowling3, E. L. Walton1,4, T. G. Sharp5, and H. J. Melosh6, 1Department of Earth and Atmospheric Sciences, 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, [email protected], 2Centre for Planetary Science and Exploration/Department of Earth Sciences, University of Western Ontario, London, ON. 3Department of the Geophysical Scienc...

A long-standing question in the planetary sciences asks what the Earth is made of. For historical reasons, volatile-depleted primitive materials similar to current chondritic meteorites were long considered to provide the `building blocks' of the terrestrial planets. But material from the Earth, Mars, comets and various meteorites have Mg/Si and Al/Si ratios, oxygen-isotope ratios, osmium-isoto...

The reactivity of Mn2O3 and late rare-earth sesquioxides in alkaline aqueous solution affords a highyield formation of rare-earth manganites, LnMnO3 (Ln 1⁄4 Ho–Lu and Y). The yield of the products depends significantly on the pH, which determines the solubility of the manganese cation, and reaction temperature, which regulates the decomposition of the insoluble rare-earth trihydroxide, Ln(OH)3,...