21,425 research outputs found
A balance sheet of life.
No full textThe memoirs were written 1998 in London. The author describes the Rothenberg family's history going back to the late 18th century. Helmut Rothenberg's great-grandfather Emil Rothenberg was born 1853 in Goettingen. His mother died three years later, and Emil was brought up with relatives. In 1879 Emil Rothenberg married Fanny Karpf, whose ancestors came from southern Germany. Emil and Fanny lived in Nuernberg and had seven children. Their oldest son Isaak, the author's father, was born in 1880. He became a senior manager at the brass works of Aron Hirsch & Son in Halberstadt. In 1914 Isaak Rothenberg married Dora Moses, who came from a large orthodox family. Isaak and Dora Rothenberg had two sons; Helmut, born in 1915, was the oldest. His brother Karl-Heinz was born in 1917. In 1920 the family moved to Frankfurt, where Isaak Rothenberg joined a manufacturing business. Memories of the Rhineland occupation by French troops and the time of inflation after World War I. Helmut attended "Musterschule", a school based on Johann Pestalozzi's principles of education. School trip to London in 1930. Private piano lessons and growing interest in music. Rising Nazism. Helmut Rothenberg graduated in 1933, shortly after Hitler had become chancellor of Germany. A few months later he left Frankfurt for England. He stayed with friends of his father in Cheshunt, where he started to work as a chartered accountant. Helmut's brother Heinz (Henry) joined him in 1934, as the condition in his school in Frankfurt had become intolerable. Summer vocations with their parents in Suffolk. In 1939 Isaak and Dora Rothenberg were able to emigrate to England - shortly before the outbreak of war with Germany. Henry joined the Pioneer Corps in 1939, while Helmut worked for the War Office. The family moved to London in 1940. Recollection of air raids and situation as enemy aliens.Helmut Rothenberg started his own business in 1945, and shortly thereafter he married his fiancée Annema Hannes. In 1946 their son John Daniel was born. Description of his professional accomplishments. Memories of colleagues and friends. Their second son Robert Michael was born in 1950.Helmut Rothenberg was born in 1915 in Halberstadt, Germany. He emigrated to England in March 1933, where he started work as a chartered accountant. His brother Henry joined him in 1934. Their parents Isaak and Dora Rothenberg managed to emigrate to England shortly before the outbreak of war with Germany in 1939. In 1945 Helmut married Annema Hannes, a former medical student and Jewish émigré from Breslau. They had three children together and two children from Annema's previous marriage.Synopsis in fileChildhoodIn 1959 Judith Kay was born. Their children and grandchildren live in London, Israel and New York
Sampling data accompanying "An aerosol activation metamodel of v1.2.0 of the pyrcel cloud parcel model: Development and offline assessment for use in an aerosol-climate model"
No full text<p>Datasets recording sampling results, accompanying the manuscript <em>An aerosol activation metamodel of v1.2.0 of the pyrcel cloud parcel model: Development and offline assessment for use in an aerosol-climate model, </em>Rothenberg, D. and Wang, C., submitted, GMD. Please see the included README for more details.</p>
Report on Meteorological Research March 1, 1935 (m-1)
No full textThe object of the report was to elucidate in detail the various features of the research program in meteorology being carried on at the Daniel Guggenheim Airship Institute in Akron, Ohio. Mr. L. J. Fangman, of the U.S. Weather Bureau, was collaborating with the author in carrying out work such as a study of autographic records of the various meteorological elements during frontal passages with a view to the possible prediction of the intensity of the accompanying disturbance as it may affect the operation of aircraft and a study of atmospheric gustiness with a view to finding the dependence between frequency end amplitude of velocity fluctuations and the vertical temperature and velocity gradients
(Fourth) Report on Meteorological Activities at the DGAI (8-1-36)(Weather Bureau Copy)
No full textThis report is on the investigations of frontal phenomena at the Daniel Guggenheim Airship Institute in Akron, Ohio from January 1, 1935 through August 1, 1936. The investigation was carried out with the cooperation of the U.S. Bureau of Aeronautics, the U.S. Weather Bureau, the California Institute of Technology, and the Guggenheim Airship Institute. Mr. R.C. Robinson of the Weather Bureau cooperated with the author in carrying out the investigation. The object of the investigation was to determine the intensity of the atmospheric disturbances (i.e. rapidity of wind shift and gustiness) accompanying the passage of cold fronts, along with a study of the characteristics of the air masses involved and other features which might affect the intensity of the disturbance. The report treated thirty cold fronts which passed the station during 1935 to 1936
Archives and Images as Repositories of Time, Language, and Forms from the Past: A Conversation with Daniel Eisenberg
No full textMetamodeling of Droplet Activation for Global Climate Models
No full textThe nucleation of cloud droplets from the ambient aerosol is a critical physical process that must be resolved for global models to faithfully predict aerosol–cloud interactions and aerosol indirect effects on climate. To better represent droplet nucleation from a complex, multimodal, and multicomponent aerosol population within the context of a global model, a new metamodeling framework is applied to derive an efficient and accurate activation parameterization. The framework applies polynomial chaos expansion to a detailed parcel model in order to derive an emulator that maps thermodynamic and aerosol parameters to the supersaturation maximum achieved in an adiabatically ascending parcel and can be used to diagnose droplet number from a single lognormal aerosol mode. The emulator requires much less computational time to build, store, and evaluate than a high-dimensional lookup table. Compared to large sample sets from the detailed parcel model, the relative error in the predicted supersaturation maximum and activated droplet number computed with the best emulator is -0.6% ± 9.9% and 0.8% ± 17.8% (one standard deviation), respectively. On average, the emulators constructed here are as accurate and between 10 and 17 times faster than a leading physically based activation parameterization. Because the underlying parcel model being emulated resolves size-dependent droplet growth factors, the emulator captures kinetic limitations on activation. The results discussed in this work suggest that this metamodeling framework can be extended to accurately account for the detailed activation of a complex aerosol population in an arbitrary coupled global aerosol–climate model.National Science Foundation (U.S.) (grant 1122374)National Science Foundation (U.S.) (AGS-1339264)United States. Department of Energy. Office of Science (DE-FG02-94ER61937
An aerosol activation metamodel of v1.2.0 of the pyrcel cloud parcel model: development and offline assessment for use in an aerosol–climate model
No full textWe describe an emulator of a detailed cloud parcel model which has been trained to assess droplet nucleation from a complex, multimodal aerosol size distribution simulated by a global aerosol-climate model. The emulator is constructed using a sensitivity analysis approach (polynomial chaos expansion) which reproduces the behavior of the targeted parcel model across the full range of aerosol properties and meteorology simulated by the parent climate model. An iterative technique using aerosol fields sampled from a global model is used to identify the critical aerosol size distribution parameters necessary for accurately predicting activation. Across the large parameter space used to train them, the emulators estimate cloud droplet number concentration (CDNC) with a mean relative error of 9.2% for aerosol populations without giant cloud condensation nuclei (CCN) and 6.9% when including them. Versus a parcel model driven by those same aerosol fields, the best-performing emulator has a mean relative error of 4.6%, which is comparable with two commonly used activation schemes also evaluated here (which have mean relative errors of 2.9 and 6.7%, respectively). We identify the potential for regional biases in modeled CDNC, particularly in oceanic regimes, where our best-performing emulator tends to overpredict by 7%, whereas the reference activation schemes range in mean relative error from-3 to 7%. The emulators which include the effects of giant CCN are more accurate in continental regimes (mean relative error of 0.3%) but strongly overestimate CDNC in oceanic regimes by up to 22%, particularly in the Southern Ocean. The biases in CDNC resulting from the subjective choice of activation scheme could potentially influence the magnitude of the indirect effect diagnosed from the model incorporating it.National Science Foundation (U.S.) (Grant 1122374)National Science Foundation (U.S.) (Grant AGS-1339264)United States. Department of Energy (Grant DE-FG02-94ER61937
MARC - Model for Research of Aerosols and Climate
No full text<p><strong>Model for Research of Aerosols and Climate</strong></p>
<p>MARC is a an aerosol modeling component designed to be run online with the Community Earth System Model v1.2. </p>
<p>The repository archiving development of this model can be found at https://github.mit.edu/marc/marc_cesm. Please contact the maintainer (Daniel Rothenberg <[email protected]>) with questions, comments, or feedback.</p>This release implements basic transient emissions functionality. For more information, see the relevant wiki page (https://github.mit.edu/marc/marc_cesm/wiki/MARC-Emissions)
Daniel Akech
No full textabstract: Daniel was a little boy when the war came to his village. He witnessed people being shot and running for shelter. There was no food or water so he drank urine and ate tree leaves.
“Lost Boys Found” is an ongoing, interdisciplinary project that is collecting, recording and archiving the oral histories of the Lost Boys/Girls of Sudan. The collection is a work-in-progress, seeking to record the oral history of as many Lost Boys/Girls as are willing, and will be used in a future book.Age: 24Region: Upper NileThis picture and bio was donated to the "Lost Boys Found" oral history project from The Arizona Lost Boys Cente
Daniel Emmett postcard
No full textPostcard of Daniel Emmett and his home in Mount Vernon, Ohio. Emmett is considered to be the author of the antebellum song "Dixie," written in 1859, which became the unofficial song of the Confederate soldiers during the American Civil War. He was born in Mount Vernon in 1815 and taught himself the fiddle, and later became associated with minstrel shows and helped to define that genre. Minstrel shows traveled around the United States, presenting skits and musical performances. Emmett also composed many other songs, including "Old Dan Tucker," "Turkey in the Straw," and "The Blue Tail Fly." He died in 1904
- …
