The North American summer monsoon is documented, using precipitation data together with gridded data for outgoing long-wave radiation (OLR), geopotential height and wind at various levels. The upper level divergence field is diagnosed and compared with the precipitation field. A simple wet-dry precipitation index is used to date the monsoon onset at stations with daily precipitation data. The analysis shows that the monsoon rains advance northward rapidly from late June to early July. The monsoon onset is accompanied by the development of a pronounced anticyclone at the jet stream level, by sea-level pressure rises over the southwestern United States, and by decreases in climatological mean rainfall over adjacent regions of the United States, Mexico and the Caribbean. This coherent pattern of rainfall changes, that covers much of North and Central America, is shown to be dynamically consistent with the circulation changes aloft. Hence, the monsoon onset is embedded within a planetary-scale pattern of circulation changes. The demise of the monsoon and the associated upper level anticyclone, which takes place around September of the year, is more gradual than the onset, and it is accompanied by an increase in rainfall throughout much of the surrounding region. The monsoon exhibits substantial interannual variability with regard to intensity and onset date. / Arts, Faculty of / Geography, Department of / Graduate

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Die Varianten des amerikanischen Kreationismus können danach unterschieden werden, wie Vieles an Befunden der säkularen Naturwissenschaft sie annehmen können. Als ein Vertreter des Young Earth Creationism, der sich von allen Kreationismen am weitesten vom wissenschaftlichen Konsens entfernt befindet, versucht Kent Hovind die Befunde der Astronomie, Geologie, Biologie und anderer Wissenschaften in ein biblisch-literalistisches Weltbild einzufügen. Diese Hovind-Theorie lässt sich, wie der amerikanische Kreationismus im Allgemeinen, als eine Rationalisierung und Säkularisierung religiöser Überzeugungen begreifen. / The forms of American creationism can be distinguished by asking what amount of secular scientific knowledge they can include or tolerate within their respective systems. Kent Hovind, a representative of Young Earth Creationism, attempts in his Hovind Theory to account for astronomical, geological, and biological findings on the basis of a biblical and literalist world view. This attempt, like American creationism in general, can be viewed as a form of rationalization and secularization of religious convictions.

archives@tulane.edu / 1 / Dominique Dollenmayer

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A pseudo-comic post-novel concerning the immoral miseducation of a demi-obscene youth in the marketplace of spectral flesh.