J. Vanderlei Martins

Title

Professor
Director, Earth Space Institute

Education

Ph.D. Physics – Institute of Physics, University of Sao Paulo, 1999
M.S. Physics – Institute of Physics, University of Sao Paulo, 1994
B.S. Physics – Institute of Physics, University of Sao Paulo, 1991

Previous Experience

Dr. Martins was previously working at the Climate and Radiation Branch of the NASA Goddard Space Flight Center, as part of the UMBC-GSFC Joint Center for Earth Systems and Technology (JCET), where he still keeps close association and collaboration. He also worked as a visiting Faculty at the Department of Atmospheric Sciences of the University of Washington, and at the Department of Applied Physics of the University of Sao Paulo.

Professional Interests

The effect of aerosol particles on cloud formation, development, lifetime, and precipitation has proven to be extremely important. Aerosols influence clouds through microphysical and radiative effects with similar impacts. The scientific interests of our group cover several aspects of this interaction with research varying from the microphysical measurement of the aerosol particles (with in situ ground based and aircraft, laboratory, and satellite remote sensing measurements) through the measurements of cloud ice and water particles (using in situ aircraft, laboratory experiments with ice and water, and remote sensing via satellite, aircraft, and ground based systems). We are strongly oriented towards the development of new instrumentation and algorithms for laboratory and field measurements from ground, mountain top, aircraft, and satellite sensors. We are also interested in the modeling of the radiative properties of aerosol and cloud particles, including the 3D properties of cloud fields and its effects on the radiative balance of the atmosphere. We are also particularly involved in the measurement of the spectral properties of aerosol particles from the deep UV (200nm) to the NIR (2500nm).

Through the UMBC Joint Center for Earth Systems and Technology (JCET) we are closely connected with the NASA Goddard Climate and Radiation Branch, and in particular with the MODIS aerosol group, where we share laboratories and other facilities optimizing the resources available between NASA GSFC and UMBC. We have also worked closely with several NASA GSFC Engineering Branches for the development of new satellite and aircraft sensors focusing on future measurements of aerosol and cloud properties. Our group has strong US and international collaborations with several groups, with whom we keep active projects focusing on the measurement and modeling of aerosol and cloud properties. We have performed field/aircraft measurements in several countries and Continents and we intend to continue and extend these collaborations to many more regions of interest.

Selected Publications

Spectral Absorption Properties of Aerosol Particles from 350-2500nm.  J. Vanderlei Martins , Paulo Artaxo, Yoram J. Kaufman, Andrea D. Castanho, Lorraine A. Remer, 2009, Submitted to Geophysical Research Letters.

Smoke Invigoration Versus Inhibition of Clouds over the Amazon. Koren, I., J. V. Martins, L. A. Remer, H. Afargan, Science 321, 946 (2008); DOI: 10.1126/science.1159185

Remote sensing of cloud sides of deep convection: Towards a three-dimensional retrieval of cloud particle size profiles. Zinner, T., A. Marshak, S. Lang, J. V. Martins, and B. Mayer, 2008; Atmos. Chem. Phys. Disc., 8, 4267-4308.

Remote sensing the vertical profile of cloud droplet effective radius, thermodynamic phase, and temperature. Martins, J. V., A. Marshak, L. Remer, D. Rosenfeld, Y. J. Kaufman, R. Fernandez-Borda, I. Koren, V. Zubko, and P. Artaxo, 2007. Atmos. Chem. Phys. Disc., 7, 4481-4519.

On the twilight zone between clouds and aerosols. Koren, I., L. A. Remer, Y. J. Kaufman, Y. Rudich, and J. V. Martins, 2007; Geophys. Res. Lett., 34, L08805, doi:10.1029/2007GL029253.

What does reflection from cloud sides tell us about vertical distribution of cloud droplet sizes? Marshak, A., J. V. Martins, V. Zubko, and Y. J. Kaufman, 2006;  Atmos. Chem. and Phys, 6, 5295-5305.

Laboratory investigation of fire radiative energy and smoke aerosol emissions. Ichoku C., J. V. Martins, Y. J. Kaufman, M. J. Wooster, P. H. Freeborn, W. M. Hao, S. Baker, C. A. Ryan, B. L. Nordgren (2008);  J. Geophys. Res., 113, D14S09, doi:10.1029/2007JD009659.

Global aerosol climatology from the MODIS satellite sensors. Remer, L. A., R. G. Kleidman, R. C. Levy, Y. J. Kaufman, D. Tanre, S. Mattoo, J. V. Martins, C. Ichoku, I. Koren, H. Yu, and B. N. Holben, 2008;  J. Geophys. Res., 113, D14S07, doi:10.1029/2007JD009661.

MODIS Aerosol Optical Depth Retrievals with high spatial resolution over an Urban Area using the Critical Reflectance. de Almeida Castanho A. D., J. Vanderlei Martins, P. Artaxo (2008);  J. Geophys. Res., 113, D02201, doi:10.1029/2007JD008751.

In situ measurements of aerosol mass concentration and radiative properties in Xianghe, southeast of Beijing. Chaudhry Z., J. V. Martins, Z. Li, S.-C. Tsay, H. Chen, P. Wang, T. Wen, C. Li, R. R. Dickerson (2007);  J. Geophys. Res., 112, D23S90, doi:10.1029/2007JD009055.

The Bodele depression: a single spot in the Sahara that provides most of the mineral dust to the Amazon forest. Ilan Koren, Yoram J Kaufman, Richard Washington, Martin C Todd, Yinon Rudich, J Vanderlei Martins, and Daniel Rosenfeld, 2006; Environmental Research Letters.

Mineral dust emission from the Bodélé Depression, northern Chad, during BoDEx 2005. Todd M. C., R. Washington, J. V. Martins, O. Dubovik, G. Lizcano, S. M’Bainayel, S. Engelstaedter (2007); J. Geophys. Res., 112, D06207, doi:10.1029/2006JD007170.

Chemical characterization of aerosols on the East Coast of the United States using aircraft and ground based stations during the CLAMS Experiment. Castanho, A., J. V. Martins, P. Hobbs, P. Artaxo, L. A. Remer, and M. Yamasoe, 2005;  J. Atmos. Sci., Vol. 62, No. 4.

The MODIS Aerosol Algorithm, Products and Validation. Remer , L.A., Y.J. Kaufman, D. Tanré, S. Mattoo, D.A. Chu, J.V. Martins, R-R. Li, C. Ichoku, R. C. Levy, R.G. Kleidman, T.F.  Eck, E. Vermote, B.N. Holben, 2005,  J. Atmos. Sci., ,  947-973.

Measurement of the Effect of Amazon Smoke on Inhibition of Cloud Formation. Koren, I., Y. Kaufman, L. Remer, J. Vanderlei Martins.  Science Vol. 303, 27 February 2004.

MODIS Cloud screening for remote sensing of aerosol over oceans using spatial variability. Martins, J.V., D. Tanré, L. Remer, Y. Kaufman, S. Mattoo, R. Levy, Geophys. Res. Lett.,29(12),10.1029/2001GL013252, 2002.

Satellite retrieval of aerosol absorption over the oceans using sunglint. Y. J. Kaufman, J. V. Martins, L. A. Remer, M. R. Schoeberl, and M. A. Yamasoe,  Geophysical Research Letters, vol. 29, No. 19, 1928, doi: 10.1029/2002GL015403, 2002.

Effects of black carbon content, particle size and mixing on light absorption by aerosol particles from biomass burning in Brazil. Martins, J. V., P. Artaxo, C. Liousse, J. S. Reid, P. V. Hobbs, Y. J. Kaufman,  Journal of Geophysical Research, Vol. 103, D24, Pages 32041-32050, 1998.

Sphericity and Morphology of Smoke Particles from Biomass Burning in Brazil.Martins, J. V., P. V. Hobbs, R.E. Weiss, and P. Artaxo,  Journal of Geophysical Research, Vol. 103, D24, Pages 32051-32057, 1998.