Atmospheric Composition and Structure (03xx)
Atmospheric Processes (33xx) (formerly Meterology & Atmospheric Dynamics)
Biogeosciences (04xx)
Electromagnetics (06xx)
Cryosphere (07xx)
Exploration Geophysics (09xx)
Geochemistry (10xx)
Geochronology (11xx)
Geodesy and Gravity (12xx)
Geomagnetism and Paleomagnetism (15xx)
Global Change (16xx)
Hydrology (18xx)
Interplanetary Physics (21xx)
Ionosphere (24xx)
Magnetospheric Physics (27xx)
Marine Geology and Geophysics (30xx)
Mathematical, Computational, & Nonlinear Geophysics (05xx,32xx,44xx) (formerly Mathematical Geophysics)
Mineralogy & Petrology (36xx)(formerly Mineralogy, Petrology, and Mineral Physics)
Mineral Physics (39xx)
Oceanography: General (42xx)
Oceanography: Physical (45xx)
Oceanography: Biological and Chemical (48xx)
Paleoceanography (49xx)
Physical Properties of Rocks (51xx)
Planetary Sciences (52xx,54xx,57xx,60xx,62xx)
Radio Science (69xx)
Seismology (72xx)
Solar Physics, Astrophysics, and Astronomy (75xx)
Space Plasma Physics (78xx)
Space Weather (79xx)
Structural Geology (80xx)
Tectonophysics (81xx)
Volcanology (84xx)
