Na 1 Nachlass Max Horkheimer, 598 - Korrespondenzen u.a. mit Frederick Wild und Friedrich Pollock (p. VI 41, 287-427)

46 Briefe zwischen Max Horkheimer und Frederick Wild; 1 Brief von Frederick Pollock an Leo Löwenthal, 22.04.1948; 5 Empfehlungsschreiben für Max Horkheimer von Frederick Pollock, 16. u. 17.04.1948; 1 Telegramm von Frederick Pollock an Max Horkheimer, 28.06.1943; 1 Brief an Max Horkheimer von Julius Schwietering, 18.02.1948; 10 Briefe zwischen der National City Bank of New York und Max Horkheimer, 1943-1944; 1 Brief von Frederick Wild an H. P. Edelman, 27.01.1944; 1 Brief von Hilda Kahn an Frederick Wild, 02.12.1943; 1 Brief von Frederick Wild an Jane Reinheimer, 30.11.1943;

Na 1 Nachlass Max Horkheimer, 600 - Korrespondenzen u.a. mit Friedrich Pollock (p. VI 42, 211-386)

Briefwechsel zwischen Max Horkheimer, Frederick Pollock und Karl August und Olga Wittfogel; 2 Briefe zwischen Edith B. Bernett und Max Horkheimer, April 1940; 2 Briefe zwischen Max Horkheimer und Philip Vaudrin, Juli 1939; 3 Briefe an David H. Stevens von Max Horkheimer, 26.03.1938; 1 Brief von A. Radcliffe an Frederick Pollock, 18.11.1937; 3 Briefe an Max Horkheimer von der Columbia University Faculty of Political Science (New York), November 1937; 2 Briefe von der Columbia University Department of History (New York) an Max Horkheimer, November 1937; 1 Brief an Max Horkheimer von Sharon Beard, 27.11.1937; 1 Brief von Ruth Benedict an Max Horkheimer, 19.11.1937; 1 Brief an Max Horkheimer von Franz Boas, 19.11.1937; 1 Brief von R. E. Chaddock an Max Horkheimer, 21.11.1937; 1 Brief an Max Horkheimer von Ch'ao-ting Chi, 19.11.1937; 1 Brief von J. M. Clark an Max Horkheimer, 22.11.1937; 1 Brief an Dr. Wertheimer von Morris R. Cohen, 29.11.1937; 1 Brief von Alfred E. Cohn an Max Horkheimer, 26.11.1937; 1 Brief an Max Horkheimer von John J. Coss, 22.11.1937; 1 Brief von George S. Counts an Max Horkheimer, 24.11.1937; 1 Brief an Max Horkheimer von A. P. Evans, 22.11.1937; 3 Briefe von Gertrude Stewart an Max Horkheimer, 20. - 24.11.1937; 1 Brief an Max Horkheimer von L. C. Goodrich, 22.11.1937; 1 Brief von John W. Innes an Max Horkheimer, 20.11.1937; 1 Brief an Max Horkheimer von Philip C. Jessup, 24.11.1937; 1 Brief von John A. Krout an Max Horkheimer, 23.11.1937; 1 Brief an Max Horkheimer von Bruno Lasker, 20.11.1937; 1 Brief von Samuel McCune Lindsay an Max Horkheimer, 24.11.1937; 1 Brief an Max Horkheimer von K. N. Llewellyn, 26.11.1937; 1 Brief von R. S. Lynd an Max Horkheimer, [November 1937]; 1 Brief an Max Horkheimer von R. M. MacIver, 19.11.1937; 1 Brief von Julian W. Mack an Max Horkheimer, 24.11.1937; 1 Brief an Max Horkheimer von Arthur Maxmahon, 20.11.1937; 1 Brief von Jerome Michael an Max Horkheimer, 26.11.1937; 1 Brief an Max Horkheimer von Wesley C. Mitchell, 22.11.1937; 1 Brief von der Columbia University School of Business (New York) an Max Horkheimer, 22.11.1937; 2 Briefe zwischen Max Horkheimer und der John Simon Guggenheim Memorial Foundation (New York), November 1937; 2 Briefe von der Columbia University Department of Psychology (New York) an Max Horkheimer, November 1937; 1 Brief an Max Horkheimer von Goodwin Watson, 23.11.1937; 1 Brief von Otto Nathan an Max Horkheimer, 26.11.937; 1 Brief an Max Horkheimer von John K. Norton, 23.11.1937; 1 Brief von der Columbia University Department of Chinese (New York) an Max Horkheimer, 23.11.1937; 1 Brief an Max Horkheimer von Gerold Tanquary Robinson, 19.11.1937; 1 Brief von der Columbia University Department of Public Law and Government (New York) an Max Horkheimer, 22.11.1937; 1 Brief an Max Horkheimer von R. C. Sailer, 20.11.1937; 1 Brief von Herbert W. Schneider an Max Horkheimer, 22.11.1937; 1 Brief an Max Horkheimer von R. L. Schuyler, 20.11.1937; 1 Brief von Pauline Steorns an Max Horkheimer, 22.11.1937; 1 Brief an Max Horkheimer von Frank Tannenbaum, 19.11.1937; 1 Brief von Alfred Vagés an Max Horkheimer, 26.11.1937;

Horizontal profiles of longwave and shortwave radiation components over sea ice near Barrow, Alaska during the 2011 melt

An integrated instrument package for measuring and understanding the surface radiation budget of sea ice is presented, along with results from its first deployment. The setup simultaneously measures broadband fluxes of upwelling and downwelling terrestrial and solar radiation (four components separately), spectral fluxes of incident and reflected solar radiation, and supporting data such as air temperature and humidity, surface temperature, and location (GPS), in addition to photographing the sky and observed surface during each measurement. The instruments are mounted on a small sled, allowing measurements of the radiation budget to be made at many locations in the study area to see the effect of small-scale surface processes on the large-scale radiation budget. Such observations have many applications, from calibration and validation of remote sensing products to improving our understanding of surface processes that affect atmosphere-snow-ice interactions and drive feedbacks, ultimately leading to the potential to improve climate modelling of ice-covered regions of the ocean. The photographs, spectral data, and other observations allow for improved analysis of the broadband data. An example of this is shown by using the observations made during a partly cloudy day, which show erratic variations due to passing clouds, and creating a careful estimate of what the radiation budget along the observed line would have been under uniform sky conditions, clear or overcast. Other data from the setup's first deployment, in June 2011 on fast ice near Point Barrow, Alaska, are also shown; these illustrate the rapid changes of the radiation budget during a cold period that led to refreezing and new snow well into the melt season.