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Studies of Ice Sheets and Polar Atmosphere Using Spaceborne Microwave Radiometers

Jet Propulsion Laboratory, California Institute of Technology
Pasadena, California (US)
Closing date
Oct 29, 2021

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Atmospheric Sciences, Cryosphere Sciences
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Microwave radiometry is a powerful tool to retrieve atmospheric water vapor and temperature profiles and to detect ice sheet parameters including melt events. However, the current atmospheric water vapor and temperature profile retrievals are hindered by uncertainties in the estimation of the background surface-emission over land surfaces including ice sheets, and the ice sheet melt detection algorithms suffer from confounding effects of snow metamorphism and atmospheric interference and lack the ability to detect subsurface melt/refreeze processes. This position offers an opportunity to tackle these challenges. Coupling the atmospheric retrieval with a surface-emission estimate based on a multi-frequency ice sheet melt, temperature, and density profile retrieval algorithm will offer a new way to improve all these retrievals.

The goal of the study is to develop algorithms using AMSU and ATMS (on Aqua, Suomi-NPP, and JPSS) for atmospheric retrievals and AMSR-E and AMSR2 (on Aqua and GCMO-W) for surface retrievals and generate data products for atmospheric water vapor and temperature, and ice sheet melt, density, and temperature profiles. The tasks include processing of spaceborne microwave radiometer data, development and validation of retrieval algorithms, and analysis of the retrieved parameters. The work will be conducted in a collaborative team environment to achieve the objectives of the study.


A successful candidate should have: Ph. D. in Remote Sensing, Electrical Engineering, Geosciences, Environmental Sciences, or a related field. Previous experience in processing and analyzing spaceborne microwave radiometer data is expected.

The selected candidate will work as a member of a team, but the ability to work independently is essential, and strong motivation for publishing is required.

The appointee will carry out research in collaboration with the JPL advisor, Dr. Andreas Colliander ( resulting in publications in the open literature.

Applicants may be subject to additional program requirements by NASA. Postdoctoral Scholar positions are awarded for a minimum of one-year period and may be renewed up to a maximum of three years. Candidates should submit the following to the JPL site (link at the top): CV, representative publications, contact information for three references, and a cover letter stating their research accomplishments and interests.

JPL is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, national origin, citizenship, ancestry, age, marital status, physical or mental disability, medical condition, genetic information, pregnancy or perceived pregnancy, gender, gender identity, gender expression, sexual orientation, protected military or veteran status or any other characteristic or condition protected by Federal, state or local law!

In addition, JPL is a VEVRAA Federal Contractor.

The Jet Propulsion Laboratory is a federal facility. Due to rules imposed by NASA, JPL will not accept applications from citizens of designated countries or those born in a designated country unless they are Legal Permanent Residents of the U.S or have other protected status under 8 U.S.C. 1324b(a)(3).

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