J. Quaas

Publication List Details

Period

1870 - 2009

Number

42

Co-Authors

A six year satellite-based assessment of the regional variations in aerosol indirect effects (2009)

T. A. Jones, S. A. Christopher, J. Quaas

Aerosols act as cloud condensation nuclei (CCN) for cloud water droplets, and changes in aerosol concentrations have significant microphysical impacts on the corresponding cloud properties. Moderate...

Aerosol indirect effects - general circulation model intercomparison and evaluation with satellite data (2009)

Quaas, J., Ming, Y., Menon, S., Takemura, T., Wang, M., Penner, J., ...

Aerosol indirect effects continue to constitute one of the most important uncertainties for anthropogenic climate perturbations. Within the international AEROCOM initiative, the representation of...

Exploiting the weekly cycle as observed over Europe to analyse aerosol indirect effects in two climate models (2009)

J. Quaas, O. Boucher, A. Jones, J. Kieser, H. Joos

A weekly cycle in aerosol pollution and meteorological quantities is observed over Europe. In the present study we exploit this effect to analyse aerosol-cloud-radiation interactions. A weekly cycle...

Aerosol indirect effects – general circulation model intercomparison and evaluation with satellite data (2009)

J. Quaas, Y. Ming, S. Menon, T. Takemura, M. Wang, J. E. Penner, ...

Aerosol indirect effects continue to constitute one of the most important uncertainties for anthropogenic climate perturbations. Within the international AEROCOM initiative, the representation of...

Effects of absorbing aerosols in cloudy skies: a satellite study over the Atlantic Ocean (2009)

K. Peters, J. Quaas, N. Bellouin

Aerosol effects, direct as well as indirect, constitute one of the biggest sources of uncertainty when it comes to quantifying human forcing of climate change. Understanding these will thus increase...

A six year satellite-based assessment of the regional variations in aerosol indirect effects (2008)

T. A. Jones, S. A. Christopher, J. Quaas

Since aerosols act as cloud condensation nuclei (CCN) for cloud water droplets, changes in aerosol concentrations having significant impacts on the corresponding cloud properties. An increase in...

Different approaches for constraining global climate models of the anthropogenic indirect aerosol effect (2007)

Lohmann, U., Quaas, J., Kinne, S., Feichter, J.

Assessments of the influence of aerosol emissions from human activities on the radiation budget, in particular via the modification of cloud properties, have been a challenge. In light of the...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2006)

Quaas,J., Boucher,O., Lohmann,U.

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2006)

J. Quaas, O. Boucher, U. Lohmann

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Model intercomparison of indirect aerosol effects (2006)

J. E. Penner, J. Quaas, T. Storelvmo, T. Takemura, O. Boucher, H. Guo, ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Werkzeug und Verfahren zum Querwalzen von Verzahnungen sowie Verfahren zur Herstellung eines Walzwerkzeuges (2006)

Hellfritzsch, U., Lorenz, B., Quaas, J.

DE 10031652 C UPAB: 20020123 NOVELTY - The tool (1) has a rolling zone (2), which has a number of rolling teeth and an adjacent calibration zone (3), which has a number of calibration teeth and an...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2006)

Quaas, J., Boucher, O., Lohmann, U.

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Global mean cloud feedbacks in idealized climate change experiments (2006)

Ringer, M. A., McAvaney, B. J., Andronova, N., Buja, L. E., Esch, M., Ingram, W. J., ...

Global mean cloud feedbacks in ten atmosphere-only climate models are estimated in perturbed sea surface temperature (SST) experiments and the results compared to doubled CO2 experiments using...

Model intercomparison of indirect aerosol effects (2006)

Penner, J. E., Quaas, J., Storelvmo, T., Takemura, T., Boucher, O., Guo, H., ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Model intercomparison of indirect aerosol effects (2006)

Penner, J. E., Quaas, J., Storelvmo, T., Takemura, T., Boucher, O., Guo, H., ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2006)

Quaas, J., Boucher, O., Lohmann, U.

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Model intercomparison of indirect aerosol effects (2006)

Penner, J. E., Quaas, J., Storelvmo, T., Takemura, T., Boucher, O., Guo, H., ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Model intercomparison of indirect aerosol effects (2006)

Penner, J. E., Quaas, J., Storelvmo, T., Takemura, T., Boucher, O., Guo, H., ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2006)

Quaas, J., Boucher, O., Lohmann, U.

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Model intercomparison of indirect aerosol effects (2006)

Penner, J. E., Quaas, J., Storelvmo, T., Takemura, T., Boucher, O., Guo, H., ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Model intercomparison of indirect aerosol effects (2006)

J. E. Penner, J. Quaas, T. Storelvmo, T. Takemura, O. Boucher, H. Guo, ...

Modeled differences in predicted effects are increasingly used to help quantify the uncertainty of these effects. Here, we examine modeled differences in the aerosol indirect effect in a series of...

Constraining the first aerosol indirect radiative forcing in the LMDZ GCM using POLDER and MODIS satellite data (2005)

Quaas,J., Boucher,O.

The indirect effects of anthropogenic aerosols are expected to cause a significant radiative forcing of the Earth's climate whose magnitude, however, is still uncertain. Most climate models use...

Constraining the first aerosol indirect radiative forcing in the LMDZ GCM using POLDER and MODIS satellite data (2005)

Quaas, J., Boucher, O.

The indirect effects of anthropogenic aerosols are expected to cause a significant radiative forcing of the Earth's climate whose magnitude, however, is still uncertain. Most climate models use...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2005)

Quaas, J., Boucher, O., Lohmann, U.

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data (2005)

Quaas, J., Boucher, O., Lohmann, U.

Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...

Evaluating aerosol/cloud/radiation process parameterizations with single-column models and Second Aerosol Characterization Experiment (ACE-2) cloudy column observations (2003)

Menon,S., Brenguier,J. L., Boucher,O., Davison,P., Del Genio,A. D., Feichter,Johann, ...

The Second Aerosol Characterization Experiment (ACE-2) data set along with ECMWF reanalysis meteorological fields provided the basis for the single column model (SCM) simulations, performed as part...

Evaluating aerosol/cloud/radiation process parameterizations with single-column models and Second Aerosol Characterization Experiment (ACE-2) cloudy column observations (2003)

Menon, S., Brenguier, J. L., Boucher, O., Davison, P., Del Genio, A. D., Feichter, Johann, ...

The Second Aerosol Characterization Experiment (ACE-2) data set along with ECMWF reanalysis meteorological fields provided the basis for the single column model (SCM) simulations, performed as part...

Coupling general circulation models on a meta-computer (2003)

Joppich, W., Quaas, J.

Sophisticated climate models, describing the circulation in atmosphere and oceans, respectively, have been coupled together. This has been done using two different remote supercomputers in an...

Verfahren und Vorrichtung zur Pruefung der Umformbarkeit von Werkstoffen fuer die Massivumformung (2001)

Schmidt, U., Quaas, J., Heidl, W., Herold, K.

DE 19830350 A UPAB: 20000313 NOVELTY - A conical punch (1) is forced into the end face of a sample (2) of the material, until fissuring (4) sets in at a surface. Plasticity is characterized from the...

Second-line carboplatin and gemcitabine in platinum sensitive ovarian cancer--a dose-finding study by the Arbeitsgemeinschaft Gynakologische Onkologie (AGO) Ovarian Cancer Study Group (2001)

Du Bois, A., Lück, H. J., Pfisterer, J., Schroeder, W., Blohmer, J. U., Kimmig, R., ...

Background: Despite the progress that has been achieved in the last years, recurrence rates in ovarian cancer patients are still considerably high and the majority of patients ultimately become...