| 词条 | Robert H. Johns |
| 释义 |
|name = Robert H. Johns |image = |imagesize = |alt = |caption = |birth_date = |birth_place = Lebanon, Indiana, U.S. |death_date = |death_place = |death_cause = |fields = Meteorology |workplaces = National Weather Service, Storm Prediction Center |education = University of Oklahoma |known_for = Severe storms forecasting |influences = |influenced = |awards = |spouse = |children = |signature = |signature_alt = |website = }} Bob Johns (born 1942) is an American meteorologist specializing in severe convective storms and tornadoes. Johns spent his career in forecasting and forecaster training. Now retired, he is working on a project reanalyzing the Tri-State Tornado. He furthered forecasting techniques and developed the modern conceptualization of the derecho following landmark work on “northwest flow” severe weather patterns. Johns also introduced the enhanced wording "Particularly Dangerous Situation" (PDS) to tornado watches for the 2 April 1982 tornado outbreak.[1] References1. ^{{cite journal |last=Lewis |first=John |authorlink= |title=A Forecaster's Story: Robert H. Johns |journal=Electronic Journal of Severe Storms Meteorology |volume=2 |issue=7 |date=2007-11-03 |url=http://www.ejssm.org/ojs/index.php/ejssm/article/view/29 }} External links
6 : American meteorologists|National Weather Service people|University of Oklahoma alumni|1942 births|Living people|People from Lebanon, Indiana |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。