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Jacob Bjerknes

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831: 658: 192: 204: 44: 384:. As pointed out in a key paper by Jacob Bjerknes and Halvor Solberg (1895-1974) in 1922, the dynamics of the polar front, integrated with the cyclone model, provided the major mechanism for north-south heat transport in the atmosphere. For this and other research, Jacob Bjerknes was awarded the Ph.D. from the 456:
Southern Oscillation, by suggesting that an anomalously warm spot in the eastern Pacific can weaken the east-west temperature difference, disrupting trade winds, which push warm water to the west. The result is increasingly warm water toward the east.
309:, one of the pioneers of modern weather forecasting. He helped develop the Norwegian cyclone model. He earned a Ph.D. from the University of Oslo in 1924. Bjerknes was part of the team that made the first crossing of the Arctic in the airship 399:. In 1931, he left his position as head of the National weather service at Bergen to become professor of meteorology at the Geophysical Institute at the University of Bergen. Jacob Bjerknes lectured at the 886: 298:. He is known for his key paper in which he pointed the dynamics of the polar front, mechanism for north-south heat transport and for which he was also awarded a doctorate from the University of Oslo. 437:). As a professor at the University of California, he was the first to see a connection between unusually warm sea-surface temperatures and the weak easterlies and heavy rainfall that accompany 876: 376:. They organized an analysis and forecasting branch which would evolve into a weather bureau by 1919. The scientific team at Bergen also included the Swedish meteorologists 881: 357:. Together they developed the model that explains the generation, intensification and ultimate decay (the life cycle) of mid-latitude cyclones, introducing the idea of 534: 133: 891: 520: 153: 138: 313:. During WWII, he helped the US with the planning of the Hiroshima and Nagasaki atomic bombings. He also helped gain an understanding of the weather phenomenon 861: 369: 123: 423: 482: 703: 411: 400: 105: 764: 871: 866: 544: 530: 514: 434: 273: 128: 486: 581: 798: 540: 453: 314: 836: 493: 478: 410:, where he headed a government-sponsored meteorology annex for weather forecasting, at the department of physics of the 337:, one of the pioneers of modern weather forecasting. His paternal grandfather was Norwegian mathematician and physicist 743: 503: 550: 465:
In 1928, he married Hedvig Borthen (1904–1998). They were the parents of two children. He died on 7 July 1975 in
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Bjerknes was part of a group of meteorologists led by his father, Vilhelm Bjerknes, at the
203: 707: 585: 422:, and serving as a colonel in the US Air Force he helped determine the best dates for the 419: 396: 310: 43: 739: 650: 442: 392: 361:, that is, sharply defined boundaries between air masses. This concept is known as the 208: 845: 821: 576: 407: 358: 295: 171: 381: 17: 524: 724: 670: 826: 373: 330: 302: 368:
Bjerknes returned to Norway in 1917, where his father founded the
202: 190: 441:. At UCLA, Bjerknes and fellow Norwegian-American meteorologist, 430: 791:"Golden Plate Awardees of the American Academy of Achievement" 230: 827:
Tribute to J. Bjerknes on the 100th anniversary of his birth
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In 1969, Jacob Bjerknes helped toward an understanding of
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In 1926, Jacob Bjerknes was a support meteorologist when
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Members of the Norwegian Academy of Science and Letters
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made the first crossing of the Arctic in the airship
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Santa Cruz, CA. 8 July 1975. p. 24 424:atomic bombings of Hiroshima and Nagasaki 325:Jacob Aall Bonnevie Bjerknes was born in 882:Norwegian emigrants to the United States 700:Jacob Aall Bonnevie Bjerknes (1897–1975) 483:Norwegian Academy of Science and Letters 569: 294:; 2 November 1897 – 7 July 1975) was a 672:The Life and Science of Jacob Bjerknes 629: 627: 625: 477:He was made an Honorary Member of the 412:University of California, Los Angeles 401:Massachusetts Institute of Technology 289: 181:University of California, Los Angeles 7: 610: 608: 862:National Medal of Science laureates 433:Department of Meteorology (now the 892:Recipients of the St. Olav's Medal 403:during the 1933-1934 school year. 25: 545:Carl-Gustaf Rossby Research Medal 531:World Meteorological Organization 515:Royal Norwegian Order of St. Olav 481:in 1932 and a member of both the 129:Carl-Gustaf Rossby Research Medal 656: 578:Jacob Bjerknes - the Synthesizer 487:Royal Swedish Academy of Science 220: 799:American Academy of Achievement 635:"Weather Forecast Pioneer Dies" 557:American Academy of Achievement 541:American Meteorological Society 195:Jacob Bjerknes with his father 728:, 11 February 2014. pp. 14–24. 1: 406:In 1940, he emigrated to the 291:[ˈjɑ̀ːkɔbˈbjæ̂rkneːs] 817:Biographie de Jacob Bjerknes 710:(American Geophysical Union) 494:Royal Meteorological Society 479:Royal Meteorological Society 216:Jacob Aall Bonnevie Bjerknes 744:Public Broadcasting Service 689:(Norsk biografisk leksikon) 602:(Norsk biografisk leksikon) 559:- Golden Plate Award (1967) 345:, after whom he was named. 918: 765:"Winners of the IMO Prize" 588:(University of Washington) 504:American Geophysical Union 80:Los Angeles, United States 832:Jacob Bjerknes photograph 551:National Medal of Science 185: 160: 124:National Medal of Science 41: 872:Norwegian climatologists 867:Norwegian meteorologists 513:Knight 1st Class of the 619:(Store norske leksikon) 467:Los Angeles, California 363:Norwegian cyclone model 110:Norwegian cyclone model 27:Norwegian meteorologist 706:19 August 2011 at the 212: 200: 584:15 April 2011 at the 447:extratropical cyclone 429:Bjerknes founded the 355:University of Leipzig 329:. His father was the 206: 194: 139:Guggenheim Fellowship 439:low-index conditions 418:Bjerknes was in the 97:Norwegian / American 89:Norwegian / American 795:www.achievement.org 771:on 22 November 2015 686:Carl Anton Bjerknes 639:Santa Cruz Sentinel 508:William Bowie Medal 349:Professional career 343:Jacob Aall Bonnevie 339:Carl Anton Bjerknes 144:William Bowie Medal 114:Weather forecasting 386:University of Oslo 378:Carl-Gustaf Rossby 213: 201: 498:Symons Gold Medal 473:Honors and awards 327:Stockholm, Sweden 189: 188: 162:Scientific career 149:Symons Gold Medal 64:Stockholm, Sweden 18:Jacob A. Bjerknes 16:(Redirected from 909: 803: 802: 787: 781: 780: 778: 776: 761: 755: 754: 752: 750: 735: 729: 722:, supplement to 717: 711: 696: 690: 682: 676: 668: 662: 661: 660: 654: 648: 646: 631: 620: 612: 603: 595: 589: 574: 440: 416:Second World War 335:Vilhelm Bjerknes 307:Vilhelm Bjerknes 293: 288: 281: 277: 272: 271: 268: 267: 264: 261: 258: 255: 252: 249: 246: 242: 241: 238: 235: 232: 229: 226: 197:Vilhelm Bjerknes 76: 60: 58: 46: 32: 21: 917: 916: 912: 911: 910: 908: 907: 906: 902:Bonnevie family 897:Bjerknes family 842: 841: 812: 807: 806: 789: 788: 784: 774: 772: 763: 762: 758: 748: 746: 737: 736: 732: 718: 714: 708:Wayback Machine 697: 693: 683: 679: 669: 665: 655: 644: 642: 633: 632: 623: 613: 606: 596: 592: 586:Wayback Machine 575: 571: 566: 475: 463: 438: 420:US armed forces 351: 323: 286: 279: 275: 243: 223: 219: 211:, Denmark, 1929 152: 147: 142: 137: 132: 127: 112: 108: 81: 78: 74: 65: 62: 61:2 November 1897 56: 54: 37: 28: 23: 22: 15: 12: 11: 5: 915: 913: 905: 904: 899: 894: 889: 884: 879: 874: 869: 864: 859: 854: 844: 843: 840: 839: 834: 829: 824: 811: 810:External links 808: 805: 804: 782: 756: 730: 712: 691: 677: 663: 651:Newspapers.com 621: 616:Halvor Solberg 604: 599:Jacob Bjerknes 590: 568: 567: 565: 562: 561: 560: 554: 548: 538: 528: 518: 511: 501: 474: 471: 462: 459: 443:Jorgen Holmboe 393:Roald Amundsen 350: 347: 333:meteorologist 322: 319: 305:meteorologist 187: 186: 183: 182: 179: 175: 174: 169: 165: 164: 158: 157: 121: 117: 116: 103: 102:Known for 99: 98: 95: 91: 90: 87: 83: 82: 79: 77:(aged 77) 71: 67: 66: 63: 52: 48: 47: 39: 38: 36:Jacob Bjerknes 35: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 914: 903: 900: 898: 895: 893: 890: 888: 885: 883: 880: 878: 875: 873: 870: 868: 865: 863: 860: 858: 855: 853: 850: 849: 847: 838: 835: 833: 830: 828: 825: 823: 822:Arnt Eliassen 819: 818: 814: 813: 809: 800: 796: 792: 786: 783: 770: 766: 760: 757: 745: 741: 738:Nova (1998). 734: 731: 727: 726: 721: 716: 713: 709: 705: 702: 701: 695: 692: 688: 687: 681: 678: 674: 673: 667: 664: 659: 652: 640: 636: 630: 628: 626: 622: 618: 617: 611: 609: 605: 601: 600: 594: 591: 587: 583: 580: 579: 573: 570: 563: 558: 555: 552: 549: 546: 542: 539: 536: 532: 529: 526: 522: 519: 516: 512: 509: 505: 502: 499: 495: 492: 491: 490: 488: 484: 480: 472: 470: 468: 461:Personal life 460: 458: 455: 450: 448: 444: 436: 432: 427: 425: 421: 417: 414:. 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Index

Jacob A. Bjerknes

ENSO
Norwegian cyclone model
Weather forecasting
National Medal of Science
Carl-Gustaf Rossby Research Medal
International Meteorological Organization Prize
Guggenheim Fellowship
William Bowie Medal
Symons Gold Medal
Vega Medal
Meteorologist

Vilhelm Bjerknes

Tivoli
/ˈjɑːkəbˈbjɜːrknɪs/
YAH-kəb BYURK-niss
[ˈjɑ̀ːkɔbˈbjæ̂rkneːs]
meteorologist
Norwegian
Vilhelm Bjerknes
Norge
El Niño
Stockholm, Sweden
Norwegian
Vilhelm Bjerknes
Carl Anton Bjerknes
Jacob Aall Bonnevie

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