Pedagogy, architecture, and the virtual classroom

Teaching through the Web requires instructors to reconsider their previous assumptions about the nature of teaching, lecture, testing, and student/teacher interaction. Teaching technical writing online, however, raises additional issues. How can a technical writing instructor create an online workplace in which professional-level collaboration can occur, while also allowing for purely academic instruction and discussion of theoretical issues? This article will address these issues in relation to the author\u27s design and development of his Digital Rhetorics and the Modern Dialectic, specifically, how instructors must assume different roles as designers and then as teachers of online courses; how useful dialectical exchange on the Web that mimics (and sometimes surpasses) face-to-face, in-classroom discussion can be created; and how technical writing instructors can foster productive online collaboration. This article will be a mixture of theory and practice—leaning a little more toward the practice, making it of immediate use to someone who has just been asked to teach a class online for the first time and is seeking help. © 1999, Taylor & Francis Group, LLC

Continental-scale temperature variability during the past two millennia

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years

Continental-Scale Temperature Variability during the Past Two Millennia: Supplementary Information

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years

Quality-control dashboards, Arctic

Quality-control dashboards for Arctic record

HADCRUT4.2 temperature data

Matlab data file containing the GraphEM- infilled version of HadCRUT4.

Quality-control dashboards, South America

Quality-control dashboards for South American record

Loading instructions

in GitHub Markdown format<div><br></div><div>Change note [5 April 2019]: Original instructions in LoadData.md are now obsolete, following updates to the LiPD utilities. The instructions now point to recently published Jupyter notebooks that illustrate how to use the PAGES 2k LiPD files to reproduce some figures from the paper, or carry out other analyses.<br></div