Effect of ENSO phase on large-scale snow water equivalent distribution in a GCM

Understanding links between the El Nino-Southern Oscillation (ENSO) and snow would be useful for seasonal forecasting, but also for understanding natural variability and interpreting climate change predictions. Here, a 545-year run of the general circulation model HadCM3, with prescribed external forcings and fixed greenhouse gas concentrations, is used to explore the impact of ENSO on snow water equivalent (SWE) anomalies. In North America, positive ENSO events reduce the mean SWE and skew the distribution towards lower values, and vice versa during negative ENSO events. This is associated with a dipole SWE anomaly structure, with anomalies of opposite sign centered in western Canada and the central United States. In Eurasia, warm episodes lead to a more positively skewed distribution and the mean SWE is raised. Again, the opposite effect is seen during cold episodes. In Eurasia the largest anomalies are concentrated in the Himalayas. These correlations with February SWE distribution are seen to exist from the previous June-July-August (JJA) ENSO index onwards, and are weakly detected in 50-year subsections of the control run, but only a shifted North American response can be detected in the anaylsis of 40 years of ERA40 reanalysis data. The ENSO signal in SWE from the long run could still contribute to regional predictions although it would be a weak indicator onl

MECA Workshop on Atmospheric H2O Observations of Earth and Mars. Physical Processes, Measurements and Interpretations

The workshop was held to discuss a variety of questions related to the detection and cycling of atmospheric water. Among the questions addressed were: what factors govern the storage and exchange of water between planetary surfaces and atmospheres; what instruments are best suited for the measurement and mapping of atmospheric water; do regolith sources and sinks of water have uniquely identifiable column abundance signatures; what degree of time and spatial resolution in column abundance data is necessary to determine dynamic behavior. Of special importance is the question, does the understanding of how atmospheric water is cycled on Earth provide any insights for the interpretation of Mars atmospheric data

Differential Shoot Feeding by Adult \u3ci\u3eTomicus Piniperda\u3c/i\u3e (Coleoptera: Scolytidae) in Mixed Stands of Native and Introduced Pines in Indiana.

The larger pine shoot beetle Tomicus piniperda, a native bark beetle of Europe and Asia, was found in North American Christmas tree plantations in 1992 in Ohio. Subsequent surveys found it in six U.S. states and in one Canadian province. The first natural area where Tomicus was found to be established was at the Indiana Dunes State Park, in northwestern Indiana near the Lake Michigan shoreline. Pine stands were surveyed for fallen shoots to determine the extent and range of shoot feeding in the park. Within the study area adult Tomicus fed on the shoots of all native pines (Pinus banksiana, P. resinosa. and P. strobus.), as well as the European species (P. sylvestris). More fallen shoots were collected from both P. resinosa and P. sylvestris than expected from their basal areas in the sampled stands. This contrasted with P. banksiana and P. strobus whose shoots were underrepresented relative to their basal areas. The relatively high numbers of fallen shoots found for P. resinosa suggests that red pines in the Great Lakes region will easily support populations of T. piniperda

Scientific Results of the Nasa-sponsored Study Project on Mars: Evolution of Its Climate and Atmosphere

The scientific highlights of the Mars: Evolution of its Climate and Atmosphere (MECA) study project are reviewed and some of the important issues in Martian climate research that remain unresolved are discussed

In The Eye Of The Selector: Ancient-Style Prose Anthologies In Ming Dynasty (1368-1644) China

The rapid growth of woodblock printing in sixteenth-century China not only transformed wenzhang (“literature”) as a category of knowledge, it also transformed the communities in which knowledge of wenzhang circulated. Twentieth-century scholarship described this event as an expansion of the non-elite reading public coinciding with the ascent of vernacular fiction and performance literature over stagnant classical forms. Because this narrative was designed to serve as a native genealogy for the New Literature Movement, it overlooked the crucial role of guwen (“ancient-style prose,” a term which denoted the everyday style of classical prose used in both preparing for the civil service examinations as well as the social exchange of letters, gravestone inscriptions, and other occasional prose forms among the literati) in early modern literary culture. This dissertation revises that narrative by showing how a diverse range of social actors used anthologies of ancient-style prose to build new forms of literary knowledge and shape new literary publics. In this dissertation, I focus on a corpus of roughly 100 anthologies dating from the early sixteenth century to the fall of the Ming in 1644. I begin with an overview of what a prose anthology was, how and where they were produced, and what kinds of selection strategies their editors employed. I first argue that government schools served as sites for reconstructing a more or less uniform canon of classical prose across the empire, and demonstrate how the figure of the anthologist enabled printers to codify seemingly universal “rules” (fa) of prose for an empire-wide student reading public. Having delineated this process, I then turn to a group of xiaopin (“minor appraisal”) anthologies produced by commercial printers in the Jiangnan region, and argue for reading their contents as a feminized ancient-style prose counter-canon embodying the values of an urban counterculture which valorized women writers. Thus, what twentieth-century scholarship viewed as an encounter between the individual writer and a monolithic tradition is better understood, I argue, as the emergence of an empire-wide student reading public followed by the creation of a print counterculture, in which male anthologists used female prose to signify alterity