under a Creative Commons License. Atmospheric Chemistry and Physics Discussions (2009)
E. J. Jensen, L. Pfister, T. V. Bui, P. Lawson, B. Baker, Q. Mo, ...
Formation of large (�100 µm) ice crystals near the tropical tropopause
Monte Carlo simulations of two-component drop growth by stochastic coalescence (2009)
L. Alfonso, G. B. Raga, D. Baumgardner
The evolution of two-dimensional drop distributions is simulated in this study using a Monte Carlo method. The stochastic algorithm of Gillespie (1976) for chemical reactions in the formulation...
D. Baumgardner, M. Grutter, J. Allan, C. Ochoa, B. Rappenglueck, L. M. Russell, ...
The concentrations of gases and properties of aerosol particles have been measured at the mountain site of Altzomoni approximately equidistant from Mexico City, Puebla and Cuernavaca, at an altitude...
S. Liu, S. Takahama, L. M. Russell, S. Gilardoni, D. Baumgardner
Fourier Transform Infrared (FTIR) and X-ray Fluorescence (XRF) were used to measure organic functional groups and elements of submicron particles collected during MILAGRO in March 2006 on three...
Characterization of organic ambient aerosol during MIRAGE 2006 on three platforms (2009)
S. Gilardoni, L. Shang, S. Takahama, L. M. Russell, J. D. Allan, R. Steinbrecher, ...
Submicron atmospheric aerosol particles were collected during the Megacity Initiative: Local and Global Research Observation (MILAGRO) in March 2006 at three platforms located in the Mexico City...
R. Subramanian, G. L. Kok, D. Baumgardner, A. Clarke, Y. Shinozuka, T. L. Campos, ...
A single particle soot photometer (SP2) was operated on the NCAR C-130 during the MIRAGE campaign (part of MILAGRO), sampling black carbon (BC) over Mexico. The highest BC concentrations were...
Characterization of organic ambient aerosol during MIRAGE 2006 on three platforms (2009)
S. Gilardoni, S. Liu, S. Takahama, L. M. Russell, J. D. Allan, R. Steinbrecher, ...
Submicron atmospheric aerosol particles were collected during the Megacity Initiative: Local and Global Research Observation (MILAGRO) in March 2006 at three platforms located in the Mexico City...
Physical and chemical properties of the regional mixed layer of Mexico's Megapolis (2009)
D. Baumgardner, M. Grutter, J. Allan, C. Ochoa, B. Rappenglueck, L. M. Russell, ...
The concentration of gases and aerosol particles have been measured at the mountain site of Altzomoni, 4010 m in altitude, located 60 km southeast of Mexico City, 50 km east of Puebla and 70 km...
S. Liu, S. Takahama, L. M. Russell, S. Gilardoni, D. Baumgardner
Fourier Transform Infrared (FTIR) and X-ray Fluorescence (XRF) were used to measure organic functional groups and elements of submicron particles collected during MILAGRO in March 2006 on three...
Composition of cirrus-forming aerosols at the tropical tropopause (2009)
K. D. Froyd, D. M. Murphy, P. Lawson, D. Baumgardner, R. L. Herman
The composition of residual particles from evaporated cirrus ice crystals near the tropical tropopause as well as unfrozen aerosols were measured with a single particle mass spectrometer. Subvisible...
Ice nucleation and cloud microphysical properties in tropical tropopause layer cirrus (2009)
E. J. Jensen, L. Pfister, P. Lawson, D. Baumgardner
In past modeling studies, it has generally been assumed that the predominant mechanism for nucleation of ice in the uppermost troposphere is homogeneous freezing of aqueous aerosols. However, recent...
Thompson, A. M., Yorks, J. E., Miller, S. K., Witte, J. C., Dougherty, K. M., Morris, G. A., ...
During the INTEX-B (Intercontinental Chemical Transport Experiment)/MILAGRO (Megacities Initiative: Local and Global Research Observations) experiments in March 2006 and the associated IONS-06 (INTEX...
Monte Carlo simulations of two-component drop growth by stochastic coalescence (2008)
Alfonso, L., Raga, G. B., Baumgardner, D.
The evolution of two-dimensional drop distributions is simulated in this study using a Monte Carlo method.~The stochastic algorithm of Gillespie (1976) for chemical reactions in the formulation...
Formation of large (?100 ?m) ice crystals near the tropical tropopause (2008)
Jensen, E. J., Pfister, L., Bui, T. V., Lawson, P., Baker, B., Mo, Q., ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (?100 ?m length), thin (aspect ratios of ?6:1 or larger) hexagonal plate ice...
Clouds and aerosols in Puerto Rico ? a new evaluation (2008)
Allan, J. D., Baumgardner, D., Raga, G. B., Mayol-Bracero, O. L., Morales-García, F., García-García, F., ...
The influence of aerosols, both natural and anthropogenic, remains a major area of uncertainty when predicting the properties and behaviour of clouds and their influence on climate. In an attempt to...
The validity of the kinetic collection equation revisited (2008)
Alfonso, L., Raga, G. B., Baumgardner, D.
The kinetic collection equation (KCE) describes the evolution of the average droplet spectrum due to successive events of collision and coalescence. Fluctuations and non-zero correlations present in...
Thompson, A. M., Yorks, J. E., Miller, S. K., Witte, J. C., Dougherty, K. M., Morris, G. A., ...
During the INTEX-B (Intercontinental Chemical Transport Experiment)/MILAGRO (Megacities Initiative: Local and Global Research Observations) experiments in March 2006 and the associated IONS-06 (INTEX...
Monte Carlo simulations of two-component drop growth by stochastic coalescence (2008)
Alfonso, L., Raga, G. B., Baumgardner, D.
The evolution of two-dimensional drop distributions is simulated in this study using a Monte Carlo method.~The stochastic algorithm of Gillespie (1976) for chemical reactions in the formulation...
Formation of large (?100 ?m) ice crystals near the tropical tropopause (2008)
Jensen, E. J., Pfister, L., Bui, T. V., Lawson, P., Baker, B., Mo, Q., ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (?100 ?m length), thin (aspect ratios of ?6:1 or larger) hexagonal plate ice...
Clouds and aerosols in Puerto Rico ? a new evaluation (2008)
Allan, J. D., Baumgardner, D., Raga, G. B., Mayol-Bracero, O. L., Morales-García, F., García-García, F., ...
The influence of aerosols, both natural and anthropogenic, remains a major area of uncertainty when predicting the properties and behaviour of clouds and their influence on climate. In an attempt to...
The validity of the kinetic collection equation revisited (2008)
Alfonso, L., Raga, G. B., Baumgardner, D.
The kinetic collection equation (KCE) describes the evolution of the average droplet spectrum due to successive events of collision and coalescence. Fluctuations and non-zero correlations present in...
Clouds and aerosols in Puerto Rico - a new evaluation (2008)
Allan, J. D., Baumgardner, D., Raga, G. B., Mayol-Bracero, O. L., Morales-Garcia, F., Garcia-Garcia, F., ...
The validity of the kinetic collection equation revisited (2008)
L. Alfonso, G. B. Raga, D. Baumgardner
The kinetic collection equation (KCE) describes the evolution of the average droplet spectrum due to successive events of collision and coalescence. Fluctuations and non-zero correlations present in...
Clouds and aerosols in Puerto Rico ─ a new evaluation (2008)
J. D. Allan, D. Baumgardner, G. B. Raga, F. Morales-García, F. García-García, ...
The influence of aerosols, both natural and anthropogenic, remains a major area of uncertainty when predicting the properties and behaviour of clouds and their influence on climate. In an attempt to...
Formation of large (≃100 μm) ice crystals near the tropical tropopause (2008)
E. J. Jensen, L. Pfister, T. V. Bui, P. Lawson, B. Baker, Q. Mo, ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (≃100 μm length), thin (aspect ratios of ≃6:1 or larger)...
A. M. Thompson, J. E. Yorks, S. K. Miller, J. C. Witte, K. M. Dougherty, G. A. Morris, ...
During the INTEX-B (Intercontinental Chemical Transport Experiment)/ MILAGRO (Megacities Initiative: Local and Global Research Observations) experiments in March 2006 and the associated IONS-06...
E. J. Jensen, L. Pfister, T. V. Bui, P. Lawson, B. Baker, Q. Mo, ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (≃100 μm length), thin (aspect ratios of ≃6:1 or larger) hexagonal plate...
Formation of large (≃100 μm) ice crystals near the tropical tropopause (2008)
E. J. Jensen, L. Pfister, T. V. Bui, P. Lawson, B. Baker, Q. Mo, ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (≃100 μm length), thin (aspect ratios of ≃6:1 or larger)...
A. M. Thompson, J. E. Yorks, S. K. Miller, J. C. Witte, K. M. Dougherty, G. A. Morris, ...
During the INTEX-B (Intercontinental Chemical Transport Experiment)/MILAGRO (Megacities Initiative: Local and Global Research Observations) experiments in March 2006 and the associated IONS-06 (INTEX...
Monte Carlo simulations of two-component drop growth by stochastic coalescence (2008)
L. Alfonso, G. B. Raga, D. Baumgardner
The evolution of two-dimensional drop distributions is simulated in this study using a Monte Carlo method.~The stochastic algorithm of Gillespie (1976) for chemical reactions in the formulation...
Analysis of the Mexico City urban plume at Altzomoni site at 4.000 m a.s.l. (2008)
Rappenglück, B., Steinbrecher, R., Forkel, R., Allan, J., Russell, L., Grutter, M., ...
American Geophysical Union Joint Assembly 2007, Acapulco, MEX, May 22-25, 2007
Junkermann, W., Grutter, M., Baumgardner, D., Steinbrecher, R.
American Geophysical Union Joint Assembly 2007, Acapulco, MEX, May 22-25, 2007
Basaldud, R., Grutter, M., Baumgardner, D., Harig, R., Junkermann, W., Rivera-Cardenas, C., ...
American Geophysical Union Joint Assembly 2007, Acapulco, MEX, May 22-25, 2007
Hernandez, A., Basaldud, R., Grutter, M., Baumgardner, D., Slusser, J., Steinbrecher, R., ...
American Geophysical Union Joint Assembly 2007, Acapulco, MEX, May 22-25, 2007
Trace gas measurements at the Altzomoni site (4000 masl) near Mexico City. (2008)
Grutter, M., Basaldud, R., Hernandez, A., Baumgardner, D., Rappenglück, B., Steinbrecher, R., ...
American Geophysical Union Joint Assembly 2007, Acapulco, MEX, May 22-25, 2007
D. Baumgardner, G. L. Kok, G. B. Raga
The mass of light absorbing carbon (LAC) in individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005 and evaluated with...
D. Baumgardner, G. L. Kok, G. B. Raga
The mass of light absorbing carbon (LAC) in individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005 and evaluated with...
The validity of the kinetic collection equation revisited (2007)
Alfonso, L., Raga, G. B., Baumgardner, D.
The kinetic collection equation (KCE) describes the evolution of the average droplet spectrum due to successive events of collision and coalescence. Fluctuations and non-zero correlations present in...
Clouds and aerosols in Puerto Rico ? a new evaluation (2007)
Allan, J. D., Baumgardner, D., Raga, G. B., Mayol-Bracero, O. L., Morales-García, F., García-García, F., ...
The influence of aerosols, both natural and anthropogenic, remains a major area of uncertainty when predicting the properties and behaviour of clouds and their influence on climate. In an attempt to...
Formation of large (?100 ?m) ice crystals near the tropical tropopause (2007)
Jensen, E. J., Pfister, L., Bui, T. V., Lawson, P., Baker, B., Mo, Q., ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (?100 ?m length), thin (aspect ratios of ?6:1 or larger) hexagonal plate ice...
On the diurnal variability of particle properties related to black carbon in Mexico City (2007)
Baumgardner, D., Kok, G. L., Raga, G. B.
The black carbon mass (BCM) of individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005. The average BCM, single particle...
Baumgardner, D., Kok, G. L., Raga, G. B.
The mass of light absorbing carbon (LAC) in individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005 and evaluated with...
The validity of the kinetic collection equation revisited (2007)
Alfonso, L., Raga, G. B., Baumgardner, D.
The kinetic collection equation (KCE) describes the evolution of the average droplet spectrum due to successive events of collision and coalescence. Fluctuations and non-zero correlations present in...
Clouds and aerosols in Puerto Rico ? a new evaluation (2007)
Allan, J. D., Baumgardner, D., Raga, G. B., Mayol-Bracero, O. L., Morales-García, F., García-García, F., ...
The influence of aerosols, both natural and anthropogenic, remains a major area of uncertainty when predicting the properties and behaviour of clouds and their influence on climate. In an attempt to...
Formation of large (?100 ?m) ice crystals near the tropical tropopause (2007)
Jensen, E. J., Pfister, L., Bui, T. V., Lawson, P., Baker, B., Mo, Q., ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (?100 ?m length), thin (aspect ratios of ?6:1 or larger) hexagonal plate ice...
On the diurnal variability of particle properties related to black carbon in Mexico City (2007)
Baumgardner, D., Kok, G. L., Raga, G. B.
The black carbon mass (BCM) of individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005. The average BCM, single particle...
Baumgardner, D., Kok, G. L., Raga, G. B.
The mass of light absorbing carbon (LAC) in individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005 and evaluated with...
Clouds and aerosols in Puerto Rico – a new evaluation (2007)
Allan, J. D., Baumgardner, D., Raga, G. B., Mayol-Bracero, O. L., Morales-García, F., García-García, F., ...
On the diurnal variability of particle properties related to black carbon in Mexico City (2007)
D. Baumgardner, G. L. Kok, G. B. Raga
The black carbon mass (BCM) of individual, internally mixed aerosol particles was measured with the Single Particle Soot Photometer (SP2) in April of 2003 and 2005. The average BCM, single particle...
Formation of large (≃100 μm) ice crystals near the tropical tropopause (2007)
E. J. Jensen, L. Pfister, T. V. Bui, P. Lawson, B. Baker, Q. Mo, ...
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (≃100 μm length), thin (aspect ratios of ≃6:1 or larger)...
Clouds and aerosols in Puerto Rico – a new evaluation (2007)
J. D. Allan, D. Baumgardner, G. B. Raga, F. Morales-García, F. García-García, ...
The influence of aerosols, both natural and anthropogenic, remains a major area of uncertainty when predicting the properties and behaviour of clouds and their influence on climate. In an attempt to...
The validity of the kinetic collection equation revisited (2007)
L. Alfonso, G. B. Raga, D. Baumgardner
The kinetic collection equation (KCE) describes the evolution of the average droplet spectrum due to successive events of collision and coalescence. Fluctuations and non-zero correlations present in...
Convective formation of pileus cloud near the tropopause (2006)
T. J. Garrett, J. Dean-Day, C. Liu, B. Barnett, G. Mace, D. Baumgardner, ...
Pileus clouds form where humid, vertically stratified air is mechanically displaced ahead of rising convection. This paper describes convective formation of pileus cloud in the tropopause transition...
Baumgardner, D., Raga, G. B., Grutter, M., Lammel, G., Moya, M.
An analysis of atmospheric gases and particles during periods of land and sea breezes in a coastal city in southwest Mexico indicates limited removal of total particle mass by deposition during...
Convective formation of pileus cloud near the tropopause (2006)
Garrett, T. J., Dean-Day, J., Liu, C., Barnett, B., Mace, G., Baumgardner, D., ...
Pileus clouds form where humid, vertically stratified air is mechanically displaced ahead of rising convection. This paper describes convective formation of pileus cloud in the tropopause transition...
Convective formation of pileus cloud near the tropopause (2006)
Garrett, T. J., Dean-Day, J., Liu, C., Barnett, B., Mace, G., Baumgardner, D., ...
Pileus clouds form where humid, vertically stratified air is mechanically displaced ahead of rising convection. This paper describes convective formation of pileus cloud in the tropopause transition...
D. Baumgardner, G. B. Raga, J. C. Jimenez, K. Bower
Airborne measurements of aerosol particle size distributions were made in the Mexican Intertropical Convergence Zone. The volume concentrations of submicron and super micron particles at cloud base...
Baumgardner, D., Raga, G. B., Jimenez, J. C., Bower, K.
Airborne measurements of aerosol particle size distributions were made in the Mexican Intertropical Convergence Zone. The volume concentrations of submicron and super micron particles at cloud base...
Baumgardner, D., Raga, G. B., Jimenez, J. C., Bower, K.
Airborne measurements of aerosol particle size distributions were made in the Mexican Intertropical Convergence Zone. The volume concentrations of submicron and super micron particles at cloud base...
Hendricks,J., Karcher,B., Dopelheuer,A., Feichter,Johann, Lohmann,Ulrike, Baumgardner,D.
The black carbon ( BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
Webster, C. R., May, R. D., Michelsen, H. A., Scott, D. C., Wilson, J. C., Jonsson, H. H., ...
In situ measurements of hydrochloric acid (HCI) concentrations in the lower stratosphere from 1991 to 1996 reveal that its abundance relative to that of total inorganic chlorine (CIy) has evolved...
Characteristics of PSCs from In Situ Observations During the SOLVE Campaign (2004)
Mahoney, M., Gandrud, B., Baumgardner, D., Dye, J., Brooks, S., Bui, P., ...
Evolution of Aerosol Properties in the Arctic Polar Vortex (2004)
Mahoney, M., Baumgardner, D., Gandrud, B., Dye, J., Brooks, S., Bui, P., ...
Florida thunderstorms: A faucet of reactive nitrogen to the upper troposphere (2004)
Ridley,B., Ott,L., Pickering,K., Emmons,L., Montzka,D., Weinheimer,A., ...
During the July 2002 Cirrus Regional Study of Tropical Anvils and Cirrus Layers-Florida Area Cirrus Experiment (CRYSTAL-FACE), flights of a WB-57F aircraft revealed mixing ratios of nitric oxide 10 -...
J. Hendricks, B. Kärcher, A. Döpelheuer, J. Feichter, U. Lohmann, D. Baumgardner
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
Brooks, S.D., Toon, O.B., Tolbert, M.A, Baumgardner, D., Gandrud, B.W., Browell, E.V., ...
Polar stratospheric clouds (PSCs) were observed on several flights during the 1999/2000 SOLVE/THESEO mission. Here we present an analysis of PSC size distribution, composition, and particle phase...
Aircraft Particle Inlets: State-of-the-Art and Future Needs (2004)
Wendisch, M., Coe, H., Baumgardner, D., Dreiling, V., Fiebig, M., ...
Florida thunderstorms: A faucet of reactive nitrogen to the upper troposphere (2004)
Ridley, B., Ott, L., Pickering, K., Emmons, L., Montzka, D., Weinheimer, A., ...
During the July 2002 Cirrus Regional Study of Tropical Anvils and Cirrus Layers-Florida Area Cirrus Experiment (CRYSTAL-FACE), flights of a WB-57F aircraft revealed mixing ratios of nitric oxide 10 -...
Hendricks, J., Karcher, B., Dopelheuer, A., Feichter, Johann, Lohmann, Ulrike, Baumgardner, D.
The black carbon ( BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
Jiménez, J. C., Baumgardner, D., Raga, G. B.
Airborne measurements of aerosol particle size distributions were made in the Mexican Intertropical Convergence Zone. The shape of the spectra at cloud base was compared with those at higher...
Hendricks, J., Kärcher, B., Döpelheuer, A., Feichter, J., Lohmann, U., Baumgardner, D.
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
Hendricks, J., Kärcher, B., Döpelheuer, A., Feichter, J., Lohmann, U., Baumgardner, D.
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
Jiménez, J. C., Baumgardner, D., Raga, G. B.
Airborne measurements of aerosol particle size distributions were made in the Mexican Intertropical Convergence Zone. The shape of the spectra at cloud base was compared with those at higher...
Hendricks, J., Kärcher, B., Döpelheuer, A., Feichter, J., Lohmann, U., Baumgardner, D.
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
Hendricks, J., Kärcher, B., Döpelheuer, A., Feichter, J., Lohmann, U., Baumgardner, D.
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
J. Hendricks, B. Kärcher, A. Döpelheuer, J. Feichter, U. Lohmann, D. Baumgardner
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of...
J. C. Jiménez, D. Baumgardner, G. B. Raga
Airborne measurements of aerosol particle size distributions were made in the Mexican Intertropical Convergence Zone. The shape of the spectra at cloud base was compared with those at higher...
Diagnosing Black Carbon Trends in Large Urban Areas using Carbon Monoxide Measurements (2002)
Baumgardner, D., Raga, G., Peralta, O., Rosas, I., Castro, T., Kuhlbusch, T., ...
Near-Field Measurements on Contrail Properties from Fuels with Different Sulfur Content (1997)
Petzold, A., Busen, R., Schröder, F.P., Baumann, R., Kuhn, M., Ström, J., ...
Microphysical properties of jet exhaust aerosol and contrails were studied in the near field of the emitting aircraft for different fuel sulfur contents. Measurements were performed behind two...
International Workshop on the Airborne Measurement of Wind, Turbulence and Position. (1990)
Fimpel, H.P., Baumgardner, D., Jochum, A.M.
The goal of the workshop was to exchange information on measurement technology, calibration techniques, and analysis methods, to discuss areas for standardization, and to discuss collaboration, in...
Protein composition of Rhodopseudomonas sphaeroides outer membrane.
Baumgardner, D, Deal, C, Kaplan, S
The outer membrane polypeptide profile of Rhodopseudmonas sphaeroides was characterized. Solubilization of the outer membrane at 75 or 100 degrees C as opposed to room temperature resulted in the...
Protein composition of Rhodopseudomonas sphaeroides outer membrane.
Baumgardner, D, Deal, C, Kaplan, S
The outer membrane polypeptide profile of Rhodopseudmonas sphaeroides was characterized. Solubilization of the outer membrane at 75 or 100 degrees C as opposed to room temperature resulted in the...