HR: 1340h
AN: A13C-0948 [Abstracts]
TI: Comparison of Airborne Sunphotometer and Near-Coincident In Situ and Remotely Sensed Water Vapor
Measurements during INTEX-ITCT 2004
AU: * Livingston, J M
EM: jlivingston@mail.arc.nasa.gov
AF: SRI International, 333 Ravenswood Ave., Menlo Park, CA 94025
United States
AU: Schmid, B
EM: bschmid@mail.arc.nasa.gov
AF: Bay Area Environmental Research Institute, 560 Third St. West, Sonoma, CA 95476
United States
AU: Redemann, J
EM: jredemann@mail.arc.nasa.gov
AF: Bay Area Environmental Research Institute, 560 Third St. West, Sonoma, CA 95476
United States
AU: Russell, P
EM: Philip.B.Russell@nasa.gov
AF: NASA Ames Research Center, MS 245-5, Moffett Field, CA 94035-1000
United States
AU: Ramirez, S
EM: saramirez@mail.arc.nasa.gov
AF: Bay Area Environmental Research Institute, 560 Third St. West, Sonoma, CA 95476
United States
AU: Eilers, J
EM: jeilers@mail.arc.nasa.gov
AF: NASA Ames Research Center, MS 245-5, Moffett Field, CA 94035-1000
United States
AU: Gore, W
EM: Warren.Gore@nasa.gov
AF: NASA Ames Research Center, MS 245-5, Moffett Field, CA 94035-1000
United States
AU: Howard, S
EM: howard@solat.arc.nasa.gov
AF: Bay Area Environmental Research Institute, 560 Third St. West, Sonoma, CA 95476
United States
AU: Pommier, J
EM: jpommier@mail.arc.nasa.gov
AF: Bay Area Environmental Research Institute, 560 Third St. West, Sonoma, CA 95476
United States
AU: Bates, T
EM: tim.bates@noaa.gov
AF: NOAA PMEL, 7600 Sand Point Way NE, Seattle, WA 98115
United States
AU: Quinn, P
EM: Patricia.K.Quinn@noaa.gov
AF: NOAA PMEL, 7600 Sand Point Way NE, Seattle, WA 98115
United States
AU: Chu, D A
EM: achu@climate.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Building 33, Room A306, Greenbelt, MD 20771
United States
AU: Gao, B
EM: gao@nrl.navy.mil
AF: Naval Research Laboratory, 4555 Overlook Ave. SW, Washington, DC 20375
United States
AU: Fetzer, E
EM: Eric.J.Fetzer@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109
United States
AU: McMillan, W
EM: mcmillan@umbc.edu
AF: University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250
United States
AU: Seemann, S W
EM: swetzel@ssec.wisc.edu
AF: University of Wisconsin - Madison
CIMSS, 1225 West Dayton Street, Madison, WI 53706
United States
AU: Borbas, E
EM: evab@ssec.wisc.edu
AF: University of Wisconsin - Madison
CIMSS, 1225 West Dayton Street, Madison, WI 53706
United States
AB:
The NASA Ames 14-channel Airborne Tracking Sunphotometer (AATS-14) took measurements from aboard a Jetstream 31 (J31) twin
turboprop aircraft during 19 science flights (~53 flight hours) over the Gulf of Maine during the period 12 July to 8
August 2004. The flights were conducted in support of the INTEX-NA (INtercontinental chemical Transport EXperiment-North
America) and ITCT (Intercontinental Transport and Chemical Transformation of anthropogenic pollution) field studies. AATS-14
measures the solar direct-beam transmission at 14 discrete wavelengths between 354 and 2138 nm, and provides instantaneous
measurements of aerosol optical depth (AOD) at 13 wavelengths and water vapor column content, which is derived from
measurements at 940 nm and surrounding wavelengths. AATS-14 measurements obtained during aircraft ascents and descents are
differentiated to yield vertical profiles of aerosol extinction and water vapor density.
Specific J31 flight patterns were designed to address a variety of science goals and, therefore, included a mixture of
vertical profiles (spiral and ramped ascents and descents) and constant altitude horizontal transects at a variety of
altitudes. In general, flights were designed to include a near sea surface horizontal transect in a region of minimal cloud
cover during or near the time of an Aqua and/or Terra satellite overpass, in addition to a low altitude flyby and vertical
profile above the NOAA ship Ronald H. Brown. In this paper, we will compare AATS-14 water vapor profiles with simultaneous
measurements obtained with a Vaisala humidity sensor on board the J-31 and with spatially and temporally near-coincident data
from radiosondes launched from the Ron Brown. AATS-14 data will also be compared with water vapor retrievals from
measurements acquired by remote sensors on Aqua and Terra during near-coincident satellite overflights.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0360 Radiation: transmission and scattering
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005