{"thcode":2,"term":{"code":731,"name":"meteorology","parent":68,"scope":"Branch of science dealing with the short-term variations of atmospheric conditions including wind, precipitation, temperature, humidity, cloud cover, and air pressure."},"uf":[],"bt":[{"code":68,"name":"atmospheric sciences","parent":291,"scope":"Studies relating to composition, structure, physics, chemistry, and dynamics of the atmosphere."},{"code":291,"name":"earth sciences","parent":1019,"scope":"Broad term for all science related to the study of the earth."},{"code":1019,"name":"sciences","parent":1,"scope":"Major educational fields, fields of study, and professional groupings within USGS."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[{"code":63,"name":"atmospheric and climatic processes","parent":101,"scope":"Phenomena affecting or occurring within the mass of gases that surrounds the earth, including its physics, chemistry, dynamics, and weather conditions."},{"code":170,"name":"climatology","parent":68,"scope":"Scientific study of the characteristic weather conditions of geographic areas."},{"code":549,"name":"hurricanes","parent":1102,"scope":"Severe cyclones, or revolving storms, originating over the equatorial regions of the earth, accompanied by torrential rain, lightning, and winds with a speed greater than 74 miles per hour."},{"code":560,"name":"hydrology","parent":291,"scope":"Branch of earth science that deals with water as it occurs in the atmosphere, on the surface of the ground, and underground."},{"code":814,"name":"ocean currents","parent":816,"scope":"Recurrent strong flows of seawater generated by wind or variations in water density along a given path."},{"code":818,"name":"ocean sciences","parent":291,"scope":"Sciences involved in the study of geological, biological, chemical, and physical characteristics and processes of the oceans."},{"code":901,"name":"planetary sciences","parent":1019,"scope":"Scientific study of the solid bodies of the solar system, including planets, moons, asteroids, meteorites, and interplanetary materials."},{"code":1102,"name":"storms","parent":63,"scope":"Atmospheric disturbances with winds of unusual force or direction. Accompanied by rain, snow, hail, or sleet, and often by thunder and lightning."},{"code":1178,"name":"tornadoes","parent":1102,"scope":"Violent storms characterized by whirling funnels of wind moving at great speeds."}]}