NASA Postdoctoral Program Opportunities

• U.S. Citizens Accepted
• Lawful Permanent Residents Accepted
• Foreign nationals who are in the U.S. at the time of application and on a valid J1 visa Accepted;
  Foreign nationals, asylees or refugees in the U.S. at the time of application with a valid EAD card and pending I-485 or I-589 forms Accepted.
  Applications with citizens from Designated Countries will not be accepted at this time, unless they are Legal Permanent Residents of the United States. A complete list of Designated Countries can be found at: https://www.nasa.gov/oiir/export-control.

Applicants are invited for a post-doctoral position within the Sunphotometer/Satellite (sunsat) team at the NASA-Ames Research Center in Moffett Field, CA (https://airbornescience.nasa.gov/sunsat). The team develops and operates airborne sunphotometers. The operational instrument is hyperspectral (4STAR: Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research), and is used to make observations of trace-gas integrated column density, as well as aerosol and cloud properties by measuring the direct and diffuse solar radiation components. 4STAR data acquired during national and international airborne field campaigns (e.g., TCAP, SEAC4RS, ARISE, NAAMES, KORUS-AQ, ORACLES) is used in synergy with space-borne (e.g. MODIS, OMI, CALIPSO, POLDER), ground-based (e.g., NASA Ames' polarized AERONET, https://aeronet.gsfc.nasa.gov/, and Pandora, https://pandora.gsfc.nasa.gov/index.html, instruments) and/ or chemical transport and radiative transfer models.

We are looking for a candidate that has expertise in the use of hyperspectral trace gas retrievals (absorption spectroscopy) to quantify atmospheric column densities of e.g., NO2, O3, H2O, SO2, HCHO. The candidate will be co-advised by two key team members: one from the NASA Ames Sunphotometer/Satellite team and one from the NASA GSFC Pandora team. The candidate will be a key member of both ARC and GSFC teams:

1. placing the sunsat team at the forefront of airborne hyperspectral sunphotometry for direct-sun trace gas measurements in upcoming airborne field campaigns and
2. connecting the two teams, building similar and cohesive trace gas retrieval capabilities for 4STAR and Pandora, and complementing ground- with airborne measurements of trace gas integrated column.