Field Campaigns:
  Caldecott Tunnel

Group Members:
  Anthony Strawa
  Gannet Hallar
  Rene Castaneda
  Katja Drdla
  Konstantin Bokarius
  Alexander Bolshakov

Aerosol and Cloud Microphysics Group
Atmospheric Physics Branch
Earth Science Division
Last Modified: Jan, 2006

Anna Gannet Hallar
Atmospheric Physics Branch
Earth Sciences Division

Mail Stop 245-5
NASA Ames Research Center
Moffett Field, CA 94035
(650) 604-3187

Research Interest
My research interest is studying anthropogenic effects on climate using innovative in situ measurement techniques for atmospheric constituents. During my graduate studies at the University of Colorado, I worked with a near-infrared tunable diode laser hygrometer used for the airborne measurement of total water (i.e. vapor plus particulate water). This instrument, a closed-path tunable diode laser hygrometer (CLH), was attached to a subisokinetic inlet for increased sensitivity to very thin cirrus layers. Using the data of CLH, I studied the radiative effect and microphysical properties of tropopause cirrus [Hallar et al., 2004]. Currently in a National Research Council Associateship post-doctoral position at NASA Ames Research Center, I study the wavelength dependence of aerosol optical properties and the vertical distribution of aerosols using an optical technique referred to as "Cavity Ring Down" (CRD) spectroscopy.

Link to full CV (Microsoft Word Format)