Web Home of Andrew Gettelman

Project Scientist
Atmospheric Chemistry Division
National Center for Atmospheric Research
Box 3000, Boulder, CO 80307-3000 USA
phone: (303) 497 1887   fax: (303) 497 1492
Email: andrew (at) ucar.edu

Page Currently under Reconstruction: November 2004: Stay Tuned!


Landmarks

-List of My Publications

-Vita, References and Research/Teaching Interests

-Personal Web-Links page


Current Research

Climate, Water Vapor and the Tropical Tropopause Layer

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 NCAR  upper troposphere and lower stratosphere (UT/LS) initiative.

This work has been helped by the great data analysis and retrieval tools at the NOAA Climate Diagnostics Center

Water Vapor Isotopes

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).

Data Analyis with EOS Instruments

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.

Model development

As part of my work in the Climat Modelig Section at NCAR, I am actively engaged in trying to improve model formulations of UT/LS processes, including the representation of ice clouds and the representation of water vapor feedbacks. More informtation will be available soon!


 

Previous Research

Information Divide Survey

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.

 

Water Vapor Assessment Activities

I have been coordinating chapter 3 of  the Water Vapor Assement (WAVAS) of the Stratospheric Processes And their Role in Climate (SPARC) program. The assessment is now available in electronic format. Just click to go to the SPARC Water Vapor assessment.

Aircraft emissions and Strat-Trop Exchange

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.

Links to UARS Instruments and Data