Atmospheric Science

Atmospheric ScienceAtmospheric Sciences in the Department of Earth and Environmental Sciences include study of the circulation, composition, and physical and chemical processes of the atmosphere. Timescales studied range from hours to millennia. Studies include the fundamental processes of the atmosphere as well as its interactions with the oceans, hydrological cycle, cryosphere and biosphere, and the role of the atmosphere in anthropogenic climate change. Atmospheric Science faculty use observational data from routine observations, remote sensing and field campaigns as well as numerical models to study tropical convection and dynamics, global modes of variability, air quality and contaminant transport, storm tracks, jet streams, stratosphere-troposphere coupling, tropical cyclones, severe storms and coupling between radiative, chemical and dynamical processes. Strong connections are maintained with the Departments of Applied Physics and Applied Mathematics, Earth and Environmental Engineering, and Chemical Engineering, the NASA Goddard Institute for Space Studies, and the International Research Institute for Climate and Society enabling a broad and deep graduate program in atmospheric science.

Each graduate student is enrolled in an academic department and follows the normal procedures of that department regarding admission and progression towards their degree. However, course offerings have been designed collaboratively with the needs of multiple departments in mind, and advisory committees commonly include faculty from multiple departments. Relevant seminars and other activities occur in all participating departments and institutes, providing a uniquely broad and stimulating intellectual environment for graduate study.

The Department of Earth and Environmental Sciences (DEES) includes several sub-fields within atmospheric sciences including atmospheric dynamics, planetary atmospheres, atmospheric radiation, atmospheric chemistry, and climate impacts. Closely related DEES research programs include modern and future climate and physical oceanography. It also has major programs in paleoclimate and geochemistry, which complement the study of atmospheric science.

The Department of Applied Physics and Applied Mathematics (APAM) has research programs in atmospheric and climate dynamics, focusing on numerical modeling, theory, and diagnostics.

The Department of Earth and Environmental Engineering (DEEE) has research programs in climate particularly through connections to water resources and geochemistry, as well as on engineering responses to the climate change problem.

In the Department of Chemical Engineering (CHEN) has research programs in atmospheric chemistry and atmospheric aerosols.

The Lamont-Doherty Earth Observatory (LDEO) is the physical home of graduate research in the Department of Earth and Environmental Sciences, but also has a distinct identity as a major laboratory for earth science. In addition to the DEES faculty, Lamont employs a staff of Lamont Research Professors, all of whom are potential advisors for PhD students.

The NASA Goddard Institute for Space Studies (GISS) has research programs in climate modeling, climate change, remote sensing, and atmospheric physics and chemistry. Graduate students in both DEES and APAM may work with GISS scientists.

The International Research Institute for Climate and Society (IRI) has research programs in climate prediction and predictability on all time scales, as well as modeling and regional dynamics studies, societal impacts of climate, and the application of climate science to achieve societal benefit. Graduate students may work with IRI scientists.

Bor-Ting Jong
Personal Information
Bor-Ting
Jong
Graduate Student
Earth and Environmental Sciences
Ocean and Climate Physics
Contact Information
103B Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US

Fax: 

(845) 365-8156

Fields of interest: 

Hydroclimate and water resources (precipitation, flood, and drought); Extreme weather events; Climate variability and change; Climate dynamics
Education
M.A. Earth and Environmental Sciences
Columbia University
05/2016
M.S. Atmospheric Sciences
National Taiwan University
06/2013
B.S. Atmospheric Sciences
National Taiwan University
06/2011
Weston Anderson
Personal Information
Weston
Anderson
Graduate Student
Earth and Environmental Sciences
Ocean and Climate Physics
Contact Information
105F Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US

Fax: 

(845) 365-8157

Fields of interest: 

Drought, Hydroclimate, Food Security

My goal is to use remote sensing observations, in-situ measurements and model simulations to understand hydroclimate dynamics and the associated implications for agriculture and food security

Education
B.S. / M.S.E. of Environmental Engineering
Johns Hopkins University
05/2012
Selected Publications:
Crop production variability in North and South America forced by life-cycles of the El Niño Southern Oscillation, Anderson, Weston; Seager, Richard; Baethgen, Walter; Cane, Mark Agricultural and Forest Meteorology (2017) http://dx.doi.org/10.1016/j.agrformet.2017.03.008
Life cycles of agriculturally relevant ENSO teleconnections in North and South America, Anderson, Weston; Seager, Richard; Baethgen, Walter; Cane, Mark International Journal of Climatology (2016) 10.1002/joc.4916
An analysis of methodological and spatial differences in global cropping systems models and maps, Anderson, W.; You, L; Wood, S.; Wood-Sichra, U.; and Wu, W. Global Ecology and Biogeography 10/2014 (2014) DOI: 10.1111/geb.12243
Towards an integrated soil moisture drought monitor for East Africa, Anderson, W.; Zaitchik, B.; Hain, C.; Anderson, M.; Yilmaz, M. T.; Mecikalski, J.; and Schultz, L. Hydrology and Earth System Sciences 08/2012 (2012) doi:10.5194/hess-16-2893-2012
Xiaojun Yuan
Personal Information
Xiaojun
Yuan
Lamont Research Professor
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
Contact Information
204D Oceangraphy
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8820

Fax: 

(845) 365-8157

Fields of interest: 

My primary research interest is in the Antarcitc atmosphere, ocean and sea ice/glacial ice fields.

I have engaged in studies of variability of the Antarctic atmosphere-ocean-sea ice system and its role in global climate since 1995.My research has progressed from the identification of polar-global linkages, expanded to an ENSO-Antarctic Dipole teleconnection mechanism study, and finally resulted in an Antarctic sea ice forecast. At the same time, I have utilized space-born scatterometer observations and developed a series of studies focused on air-sea interactions on synoptic time scales, ranging from cyclone-sea ice interaction, high wind evaluations to satellite enhanced cyclone statistics in the Southern Ocean. With the accumulation of knowledge regarding climate variability in the atmosphere, sea ice and at the air-sea interface, an understanding of the ocean’s role in the mid-high latitudes climate system becomes increasingly important. However, this task is much more challenging because of sparse observations in the Southern Ocean. In recent years, I have developed a few oceanic field programs to advance our knowledge of how the polar ocean plays out in the climate system.

Education
Ph.D..
Scripps Institution of Oceanography, University of California, San Diego
12/1994
B.S. in Physical Onceanigraphy
Shandong College of Oceanography, Qingdao, China
6/1982
Selected Publications:
Inflow of Warm Circumpolar Deep Water in the Central Amundsen Shelf, Wahlin, A K; Yuan, X; Bjork, G; Nohr, C Journal of Physical Oceanography (2010)
Satellite-based midlatitude cyclone statistics over the Southern Ocean: 2. Tracks and surface fluxes, Yuan, X., J. Patoux and C. Li, J. Geophys. Res., , Volume: 114 (2009)
Trends in Antarctic annual sea ice retreat and advance and their relation to El Nino-Southern Oscillation and Southern Annular Mode variability, Stammerjohn, S. E.; Martinson, D. G.; Smith, R. C.; Yuan, X.; Rind, D. Journal of Geophysical Research-Oceans Mar 14, Volume: 113, Issue: C3 p.: - (2008) Doi 10.1029/2007jc004269
Fronts and strong currents of the upper southeast Indian Ocean, He, Z. G.; Dong, Z. Q.; Yuan, X. J. Acta Oceanologica Sinica, Volume: 25, Issue: 2 p.: 1-24 (2006)
ENSO-related impacts on Antarctic sea ice: a synthesis of phenomenon and mechanisms, Yuan, X. J. Antarctic Science Dec, Volume: 16, Issue: 4 p.: 415-425 (2004) Doi 10.1017/S0954102004002238
High-wind-speed evaluation in the Southern Ocean, Yuan, X. J. Journal of Geophysical Research-Atmospheres Jul 1, Volume: 109, Issue: D13 p.: - (2004) Doi 10.1029/2003jd004179
A Markov model for seasonal forecast of Antarctic sea ice, Chen, D. K.; Yuan, X. J. Journal of Climate Aug, Volume: 17, Issue: 16 p.: 3156-3168 (2004)
Re-evaluating Antarctic sea-ice variability and its teleconnections in a GISS global climate model with improved sea ice and ocean processes, Liu, J. P.; Yuan, X. J.; Martinson, D. G.; Rind, D. International Journal of Climatology Jun 15, Volume: 24, Issue: 7 p.: 841-852 (2004) Doi 10.1002/Joc.1040
Upper ocean thermohaline structure and its temporal variability in the southeast Indian Ocean, Yuan, X. J.; Martinson, D. G.; Dong, Z. Q. Deep-Sea Research Part I-Oceanographic Research Papers Feb, Volume: 51, Issue: 2 p.: 333-347 (2004) DOI 10.1016/j.dsr.2003.10.005
Sensitivity of sea ice to physical parameterizations in the GISS global climate model, Liu, J. P.; Schmidt, G. A.; Martinson, D. G.; Rind, D.; Russell, G.; Yuan, X. J. Journal of Geophysical Research-Oceans Feb 27, Volume: 108, Issue: C2 p.: - (2003) Doi 10.1029/2001jc001167
Evaluating Antarctic sea ice variability and its teleconnections in global climate models, Liu, J. P.; Martinson, D. G.; Yuan, X. J.; Rind, D. International Journal of Climatology Jun 30, Volume: 22, Issue: 8 p.: 885-900 (2002) Doi 10.1002/Joc.770
Mechanism study of the ENSO and southern high latitude climate teleconnections, Liu, J. P.; Yuan, X. J.; Rind, D.; Martinson, D. G. Geophysical Research Letters Jul 15, Volume: 29, Issue: 14 p.: - (2002) Doi 10.1029/2002gl015143
The Antarctic Dipole and its predictability, Yuan, X. J.; Martinson, D. G. Geophysical Research Letters Sep 15, Volume: 28, Issue: 18 p.: 3609-3612 (2001)
Climate response to basin-specific changes in latitudinal temperature gradients and implications for sea ice variability, Rind, D.; Chandler, M.; Lerner, J.; Martinson, D. G.; Yuan, X. Journal of Geophysical Research-Atmospheres Sep 16, Volume: 106, Issue: D17 p.: 20161-20173 (2001)
Antarctic sea ice extent variability and its global connectivity, Yuan, X. J.; Martinson, D. G. Journal of Climate May 15, Volume: 13, Issue: 10 p.: 1697-1717 (2000)
Effect of air-sea-ice interaction on winter 1996 Southern Ocean subpolar storm distribution, Yuan, X. J.; Martinson, D. G.; Liu, W. T. Journal of Geophysical Research-Atmospheres Jan 27, Volume: 104, Issue: D2 p.: 1991-2007 (1999)
Climate variation - Cycling around the South Pole, Yuan, X. J.; Cane, M. A.; Martinson, D. G. Nature Apr 25, Volume: 380, Issue: 6576 p.: 673-674 (1996)
The subarctic frontal zone in the North Pacific: Characteristics of frontal structure from climatological data and synoptic surveys, Yuan, X. J.; Talley, L. D. Journal of Geophysical Research-Oceans Jul 15, Volume: 101, Issue: C7 p.: 16491-16508 (1996)
Jason E. Smerdon
Personal Information
Jason
E.
Smerdon
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
School of International & Public Affairs
Contact Information
205D Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8493

Fax: 

(845) 365-8157

Fields of interest: 

Common-Era Paleoclimatology, Climate Modeling, Statistical Climatology, Climate Variability and Change

My group’s broad objective is to characterize and understand climate variability and change on multi-decadal to centennial timescales. Climate research is limited in its ability to understand these climatic variations directly from the instrumental record because such observations are not widely available for more than about 100-150 years. To circumvent this limitation, modern instrumental records are supplemented with climatic proxy records and climate model simulations to help characterize these low-frequency modes of change. Toward such ends, my research group uses numerical models, climate proxy records and statistical methods to better understand the variability of climate over decades to centuries. We have a particular interest in how multiple climate proxies can be combined to yield hemispheric and global maps of climate variability spanning the Common Era (the last two thousand years), and how climate models represent climatic change over this time period. Please see my research and publication pages for more information on my group’s research in these areas.

Projects:

  • Spectral characteristics of climate proxies and their expression in climate field reconstructions, NOAA (Lead PI)
  • Collaborative Research: Locally-constrained climate field reconstructions of the last millennium: Methods and application, NSF (Lead PI)
  • Global Decadal Hydroclimate Predictability, Variability and Change: A Data-Enriched Modeling Study (GloDecH), NOAA, (Co PI)
Education
Ph.D., Applied Physics
University of Michigan
2004
M.S., Physics
University of Michigan
2000
B.A., Physics Major
Gustavus Adolphus College
1998
Selected Publications:
A new archive of large volcanic events over the past millennium derived fromreconstructed summer temperatures, Schneider, L.; Smerdon, J. E.; Pretis, F.; Hartl-Meier, C.; Esper, J. Environmental Research Letters (2017)
The 2016 Southeastern U.S. Drought: An Extreme Departure From Centennial Wetting and Cooling Q2, Williams, Park A.; Cook, Benjamin I.; Smerdon, Jason E.; Bishop, Daniel A.; Seager, Richard; Mankin, Justin S. Journal of Geophysical Research: Atmospheres (2017)
Revisiting the Leading Drivers of Pacific Coastal Drought Variability in the Contiguous United States, Cook, Benjamin I.; Willliam, Park A.; Mankin, Justin S.; Seager, Richard; Smerdon, Jason E.; Singh, Deepti Journal of Climate (2017)
A Robust Null Hypothesis for the Potential Causes of Megadrought in Western North America, Ault, Toby R.; St. George, Scott; Smerdon, Jason; Coats, Sloan; Mankin, Justin S.; Carrillo, Carlos M. Coor, Benjamin I.;Stevenson Samantha Journal of Climate (2017)
The 2016 southeastern US drought: an extreme departure from centennial wetting and cooling, Williams, A. Park; Cook, Benjamin I.; Smerdon, Jason E.; Bishop, Daniel A.; Seager, Richard; Mankin, Justin S. Journal of Geophysical Research - Atmospheres, Volume: 122, Issue: 20 p.: 10888-10905 (2017) 10.1002/2017JD027523