weather modification

Britannica Concise Encyclopedia

Deliberate or inadvertent alteration of atmospheric conditions by human activity, sufficient to modify the weather on a local or regional scale. Deliberate alterations include covering plants to keep them warm at night, seeding clouds to induce or augment precipitation, and firing silver-iodide particles into clouds to suppress or mitigate hail and to reduce fog at airports. Inadvertent alterations are the result of industrialization and urbanization, which have added billions of tons of carbon dioxide and other gases to the atmosphere ( acid rain, global warming, greenhouse effect).


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READINGS: REANALYSIS
; ...of January 1980: WEATHER MODIFICATION Weather modification is scientifically...five- to 10-year weather modification research plan. This...policy of openness in weather modification activities, suggesting... Read more
Back in business? The government takes another look at weather modification.
; ...the federal government back in the weather modification business. Bills currently pending...federal coordinating committee on weather modification research for studying the possibility...Nations Treaty, forbidding the use of weather modification as a weapon of war. The United ... Read more
He thinks he can stop a hurricane: Skeptics abound, but one entrepreneur is brainstorming big on weather modification, a field whose means are scientifically unproven.
; ...ambitious edge of a field called weather modification, an industry operating with scant...from 1950s-era scientific theory, weather modification has drawn renewed interest with...well prove the most far-reaching. Weather modification already operates at a staggering... Read more
WEATHER MODIFICATION: Finding Common Ground
; ...report on the future of weather modification research is examined...representing the NRC and the Weather Modification Association. The National...the current status of weather modification (Orville 2001). As a... Read more
Weather modification.(Front & center: a reading of people, places, and projects)
; ...address many of the issues surrounding weather modification. There is a need, more urgent than...new knowledge had been applied to weather modification. According to the National Academies...asked to review the current stare of weather modification and weather prediction, identify... Read more
Weather modification still up in air
; Weather modification still up in air More research...the horizon. The science of weather modification is far from fine-tuned, but...Resources Board spokesman. Serious weather modification research began in the 1940s... Read more
Talking about, and _ perhaps _ doing something about the weather.(Knight Ridder Newspapers)
; ...horizon, they say. The science of weather modification is far from fine-tuned, but experts...Resources Board spokesman. Serious weather modification research began in the 1940s. Much...widely accepted statistics to prove weather-modification techniques, those on the front lines... Read more
Weather-modification interest intensifies again
; ...ambitious edge of a field called weather modification, an industry operating with scant...from 1950s-era scientific theory, weather modification has drawn renewed interest with...well prove the most far- reaching. Weather modification already operates at a staggering... Read more
Weather modification raises red flags, but pushes ahead.
; ...ambitious edge of a field called weather modification, an industry operating with scant...from 1950s-era scientific theory, weather modification has drawn renewed interest with...well prove the most far-reaching. Weather modification already operates at a staggering... Read more
ESTABLISHING A WEATHER MODIFICATION OPERATIONS AND RESEARCH:MICHAEL GARSTANG BOARD
; ...Committee on Critical Issues in Weather Modification Research National Research Council...Committee on Critical Issues in Weather Modification Research. The National Research...a brief summary of the status of weather modification research, as described in our NRC... Read more

Related entries from encyclopedias, dictionaries, and thesauruses

MODIFICATION
MODIFICATION. A term for the dependence of one...adjective good modifying the noun weather in the phrase good weather ; the...modifying by preceding) and post-modification (modifying by following). In diamond...generally not described in terms of modification: the subordinate clause in ... Read more
Meteorology and Weather Alteration
...an important factor in the movement of air masses. Weather radar first came into use in the United States in 1949...1906 – 1998) and R. R. Braham. Conventional weather radar shows precipitation location and intensity. Ultimately...and satellites greatly improved data collection and weather ... Read more
Earth Science: Rainmakers
...RAINMAKERS Changing the Weather In 1943 earth scientists...investigate the possibility of weather modification. Working at the General...all objects exposed to the weather. After observing the way...the Clouds: Advances in Weather Modification (Garden City, N.Y.: Doubleday... Read more
tropical air
...continental tropical air, originating over land masses (especially over North Africa and the Middle East). Movements of these air masses poleward, with modification of their original characteristics, can have marked influence on weather in mid-latitudes. Read more
tropical air
...continental tropical air, originating over land masses, and especially over N. Africa and the Middle East. Movements of these air masses poleward, with modification of their original characteristics, can have marked influence on weather in mid-latitudes. Read more

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