List of My PublicationsI know the formatting is very 1999, but the info is current!
List of My PublicationsVita,
and Research/Teaching Interests
I am working with colleagues to investigate the role of aerosols in climate and how they affect cloud radiative properties using advanced cloud microphysics and aerosols in the NCAR Community Atmosphere Model. See my publications page for more details.
Much of my work on cloud microphysics has focused on the ice phase and ice supersaturation in the atmosphere. Ice and mixed phase clouds are important for the planetary radiation balance, and critical for understanding the evolution of Arctic climate. Recent work of myself and collaborators is focusing on ice and on the Arctic. More details on my publications page and Vita.
As part of my work in the Atmospheric Modeling and Predictability Section at NCAR, I am actively engaged in trying to improve model formulations of physical processes, especially cloud processes. Most of my work has focused on understanding cloud microphysics, including the representation of ice clouds.
Currently most of my research concerns the exchange of air and water vapor across the tropopause. Several recently submitted papers concerning the tropical tropopause region are available on my publications page. I am also a co-investigator in the NASA Airborne Tropical Tropopause Experiment (ATTREX) campaign.
I am working on an Federal Aviation Administration (FAA) funded project to better estimate the climate impact of cirrus clouds. More general details on avation's effect on the atmosphere are available in the IPCC special report Aviation and the Global Atmosphere.
In conjunction with Paul Lawson (SPEC), Linnea Avallone (U Colorado) and Holger Vomel (Meteorologisches Observatorium Lindenberg) balloon launches were conducted from South Pole Station in January-February 2009. South Pole ICe nucleation Experiment 2 (SPICE2) data is now available on the NCAR Community Data Portal.
I am involved in several different efforts using stable isotopes of water vapor to understand the hydrologic cycle. This includes work with in-situ aircraft data from ALIAS in a collaboration with C. Webster (NASA-JPL). A paper has been submitted to JGR on this work (see my publications page). I have also been collaborating to put isotopes in the NCAR global modeling system (CAM and WACCM).
In conjunction with Bill Randel (NCAR, ACD) and the AIRS team at JPL we are working with AIRS and MODIS data to try to better understand clouds in the upper troposphere and lower stratosphere (UT/LS). A forthcoming paper in GRL will discuss some detailed validation of AIRS and MODIS in the UT/LS region.
I am conducting a survey from October 2001-October 2002 on the 'information divide' in the climate sciences. This survey is electronic, as well as having a field component. Complete details are available on the survey web site. Please visit the web site and submit the addresses of developing country colleagues.
My dissertation research, working with Prof. Jim Holton at UW on stratosphere-troposphere exchange, and aircraft emissions in the atmosphere. The work was also conducted with Dr. Anne Douglass in the Atmospheric Chemistry and Dynamics Branch at the NASAGoddard Space Flight Center in Greenbelt, Maryland.
My previous research (see my publications list ) has included work with the Upper Atmosphere Research Satellite studying the strat-trop exchange of ozone, and some statistical climate modeling as an undergraduate.