Bill Barnes NASA's Goddard Space Flight Center Code 970 Greenbelt, MD 20771 T: (301) 614-5675 F: (301) 614-5666 William.L.Barnes@nasa.gov

---

---

Dr. William L. Barnes received the B. S. and M. S. degrees in Physics from the University of North Texas in 1960 and 1961 respectively and a Ph. D. degree in Physics from Florida State University in 1970.

He is the Associate Chief of the Laboratory for Hydrospheric Processes at NASA's Goddard Space Flight Center. Dr. Barnes started at GSFC in 1971, spent a year at NASA Headquarters in 1980 and was Head of the Sensor Concepts and Development Branch at GSFC from 1983 to 1991 when he assumed his present position.

Barnes' research activities have centered on the development and calibration of imaging spectroradiometers from the visible through the thermal infrared portion of the electromagnetic spectrum. He has served as Sensor Scientist on the AVHRR (1 and 2), the Heat Capacity Mapping Radiometer (HCMR), the VIRS on TRMM, SeaWiFS and MODIS.

Barnes has been intimately involved in the development of MODIS since early in 1984 when he was appointed to the MODIS Instrument Panel that developed the original concept. He has been directly responsible for specification development, contractor selection, performance trades and general oversight. He serves as the interface between the Science Team, the MODIS Calibration Support Team and the EOS Project.

Since the launch of TRMM in November of 1997, in his position as VIRS Sensor Scientist, he has been examining the VIRS data for clues as to the anticipated MODIS performance based on similarities in design and calibration approach for the two sensors.

He has also been involved in the development of the AGI/VIIRS sensor requirements with the goal of utilizing MODIS concepts in the operational arena via the planned NPP transitional mission.

This work does not produce a Level-2 Product. Rather it is used to assist in the overall concept development and calibration approach.

Related World Wide Web Sites:

• Tropical Rainfall Measuring Mission (TRMM) Home Page
• MODIS Home Page
• MODIS Calibration Discipline Group Home Page