This is a request for interest in research positions the Laboratory for Terrestrial Physics, which is a part of the Earth Sciences Directorate at the NASA/Goddard Space Flight Center, at Greenbelt, MD ­ located near Washington, D.C.

The mission of the Laboratory is to advance NASA programs in exploration of Earthıs surface features and their interactions with the atmosphere, as well as exploration of solid body processes of the Earth and planets. The Laboratory has four main areas of work. The "biospheric sciences" program encompasses a broad range of basic and applied research to study terrestrial ecosystems and their interactions with the atmosphere using multi-scale remote sensing, modeling, and advanced analytical techniques. "Geophysical and geodynamic studies" span a wide range of subjects and disciplines in research of both the solid Earth and planetary bodies, especially Mars. Measurements and models using both surface and satellite data, along with other observational and theoretical information, are used to help improve our understanding of the nature and evolution of the core, mantle and crust, their interactions with surface topography, and rotational dynamics. "Remote sensing measurement research" is focused on the development of new laser measurement techniques based on analysis and tests with ground based, airborne and space borne instruments. This area links the "bio" and "geo" scientific requirements to define, design, build, and demonstrate instruments for Earth and planetary remote sensing science programs. The "science data analysis and processing" program is focused on developing reliable, low cost computing systems for production, distribution, analysis, and/or modeling of Earth observation data sets, such as regional and global data sets provided by Landsat and MODIS.

Scientists will assist in developing, coordinating, and conducting research, leading to new flight missions, within one or more of the broad areas described above. These studies may involve both the observation of dynamic Earth and planetary processes using satellite sensors, and/or the application of measurements to develop a better understanding of these processes. Specific areas of interest include:

• biologists, ecologists, agronomists, or foresters with demonstrated capabilities in the use of remotely sensed data to assess, model and/or predict ecosystem, hydrologic and climatic changes due to natural and anthropogenic processes at local, regional, to global scales;
• research scientists with a strong technical background and experience in information systems, and in geo-location of satellite data and production or quality assessment of land science products;
• atmospheric scientists, particularly in the monitoring of aerosol and related properties of the atmosphere to validate and/or atmospherically correct Earth observation satellite data;
• geologists and geophysicists with demonstrated capabilities to use surface and/or satellite data, as well as models, in the broad disciplines of geophysics, geology, geodesy and geodynamics as applied to both the solid Earth and planetary bodies; and
• scientists / physicists with a strong technical background and experience in developing laser or other remote sensing instruments and techniques leading to scientific measurements that enhance our understanding of the physical environment of the Earth and planets.

Research in the Laboratory is focused on the use of the remote sensing perspective offered by satellite observations, but may also include airborne and ground-based observations. These observations are often used as constraints for numerical modeling. The research may involve development and application of algorithms, innovative data processing techniques, and new measurement technologies. In additional to individual research, the work can include participation in large programs or research teams led by others, such as space missions, field campaigns, and major data processing, calibration and analysis efforts. Other duties may include monitoring contractors engaged in these research areas.

Applicants must possess a Bachelors degree in an appropriate field of physical science, mathematics, computer science or engineering. A Ph.D in Earth or planetary sciences or a related science discipline is highly desired. Salary will be commensurate with experience and qualifications and would be equivalent to the GS-12 through 15 levels ($60,638 ­ $130,305 per year). To apply, send a brief letter (three pages maximum) to the following e-mail address by 31 July, 2004: interest@ltpmail.gsfc.nasa.gov>. Only U.S. citizens need respond. The letter should contain a statement of research interests, expected contributions to the Laboratory's research program, potential availability, a current vita, and names of three professional references. You may call 301-614-6011 if you desire further information. NASA is an equal opportunity employer.