Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania /

Relief shown by shading and spot heights.

A new, fast and flexible radiative transfer method for Venus general circulation models

We present a new radiation scheme for the Oxford Planetary Unified Model System for Venus, suitable for the solar and thermal bands. This new and fast radiative parameterization uses a different approach in the two main radiative wavelength bands: solar radiation (0.1-5.5 mu m) and thermal radiation (1.7-260 mu m). The solar radiation calculation is based on the delta-Eddington approximation (two-stream-type) with an adding layer method. For the thermal radiation case, a code based on an absorptivity/emissivity formulation is used. The new radiative transfer formulation implemented is intended to be computationally light, to allow its incorporation in 3D global circulation models, but still allowing for the calculation of the effect of atmospheric conditions on radiative fluxes. This will allow us to investigate the dynamical-radiative-microphysical feedbacks. The model flexibility can be also used to explore the uncertainties in the Venus atmosphere such as the optical properties in the deep atmosphere or cloud amount. The results of radiative cooling and heating rates and the global-mean radiative-convective equilibrium temperature profiles for different atmospheric conditions are presented and discussed. This new scheme works in an atmospheric column and can be easily implemented in 3D Venus global circulation models. (C) 2014 Elsevier Ltd. All rights reserved.

New worlds and new churches: The Orthodox Church(es) and the European Union

The Orthodox church(es) share a common commitment to the unity of dogma and spirituality. There is, however, no doctrinal formulation that comes close to a form of political theology at a pan-Orthodox level. This means that the Orthodox churches’ attitude towards the European Union (EU) is driven by their ecclesial diversity and by complex inter-ecclesial relations. More fundamentally they share a fragmented and plural, theological objection to the very ideas of Europe and the West. This has been further complicated by the emergence of a substantial Orthodox diaspora from Eastern Europe, Russia, and the Middle East living across the breadth of the European continent. Consequently the ecclesial identity and self-perception of the autocephalous Orthodox churches is changing. These churches are becoming increasingly transnational and extra-territorial. With this, their perception of Europe and the West, as seen through the eyes of their diaspora communities, is altering from “threat” to “home” (Makrides and Uffelmann, 2003). The growing diaspora will not only impact the Christian demographics of Europe but will also transform the Eastern Churches’ view of Europe and the EU (Leustean, 2009; 2011; 2013; 2014a; 2014b).

Arsenic Geochemitry in Warm Spring Ponds: New Field and Experimental Results

Silver Bow Creek (SBC) flows into the Warm Springs Ponds Operable Unit (WSPOU), where various containment cells are used to precipitate copper and other metals (e.g., Cd, Cu, Mn, Pb, Zn). Lime is added seasonally to increase the pH and assist in removal of metals from the water column. Although the WSPOU is effective at removing copper and other cationic trace metals, concentrations of dissolved arsenic exiting the facility are often above the site specific standard, 20 20 ug/L, during low-flow periods each summer and fall. This thesis is a continuation of arsenic geochemistry studies by Montana Tech in the WSPOU. Field work focused on Pond 3, the largest and first in the series of treatment ponds. Shallow groundwater was sampled from 8 PVC piezometers located near the south end of Pond 3. Three sediment pore-water diffusion samplers (“peepers”) were also deployed at the south end of Pond 3 to examine vertical gradients in chemistry in the top 25 cm of the pond sediment. In general, the pH and Eh values of the shallow groundwater and sediment pore-water were less than in the pond water. Concentrations of arsenic were generally higher in subsurface water, and tended to pass through a maximum (up to 530 g/L) about 10 cm below the sediment-water interface. In the peeper cells, there was a strong positive correlation between dissolved As and dissolved Fe, and an inverse correlation with sulfate. Therefore, the zone of arsenic release corresponds to a zone of bacterial Fe and sulfate reduction in the shallow, organic-rich sediment. Redox speciation of arsenic shows that arsenate (As(V)) is dominant in the pond, and arsenite (As(III)) is dominant in the subsurface water. A series of laboratory experiments with pH adjustment were completed using SBC water collected near the inlet to the WSPOU as well as water and shallow sediment collected from Pond 3. Water ± sediment mesocosms were set up in 1-L Nalgene bottles (closed system) or a 20-L aquarium (open system), both with continuous stirring. The pH of the mesocosm was adjusted by addition of NaOH or HNO3 acid. The closed system provided better pH control since the water was not in contact with the atmosphere, which prevented exchange of carbon dioxide. In both the closed and open systems, dissolved arsenic concentrations either decreased or stayed roughly the same with increase in pH to values > 11. Therefore, the release of dissolved As into the treatment ponds in low-flow periods is not due to changes in pH alone. All of these results support the hypothesis that the arsenic release in WSPOU is linked to microbial reduction of ferric oxide minerals in the organic-rich sediment. Upwards diffusion of dissolved As from the sediment pore-water into the pond water is the most likely explanation for the increase in As concentration of the WSPOU in low-flow periods.