Diagnostic patterns of seasonal and interannual temperature variation off the west coast of the United States: Local and remote large-scale atmospheric forcing

1994 ◽  
Vol 99 (C8) ◽  
pp. 16019 ◽  
Author(s):  
Jerrold G. Norton ◽  
Douglas R. McLain
Keyword(s):  
United States ◽  
Temperature Variation ◽  
West Coast ◽  
Large Scale ◽  
The United States ◽  
Atmospheric Forcing ◽  
The West

scholarly journals Migration Patterns of the Emerging Plant Pathogen Phytophthora ramorum on the West Coast of the United States of America

2009 ◽  
Vol 99 (6) ◽  
pp. 739-749 ◽  
Author(s):  
S. Prospero ◽  
N. J. Grünwald ◽  
L. M. Winton ◽  
E. M. Hansen
Keyword(s):  
United States ◽  
Genetic Structure ◽  
West Coast ◽  
Large Scale ◽  
Reproductive Mode ◽  
The United States ◽  
Phytophthora Ramorum ◽  
The West ◽  
Migration Patterns ◽  
High Incidence

Phytophthora ramorum (oomycetes) is the causal agent of sudden oak death and ramorum blight on trees, shrubs, and woody ornamentals in the forests of coastal California and southwestern Oregon and in nurseries of California, Oregon, and Washington. In this study, we investigated the genetic structure of P. ramorum on the West Coast of the United States, focusing particularly on population differentiation potentially indicative of gene flow. In total, 576 isolates recovered from 2001 to 2005 were genotyped at 10 microsatellite loci. Our analyses of genetic diversity and inferences of reproductive mode confirm previous results for the Oregon and California populations, with the strong majority of the genotypes belonging to the NA1 clonal lineage and showing no evidence for sexual reproduction. The high incidence of genotypes shared among populations and the lack of genetic structure among populations show that important large-scale, interpopulation genetic exchanges have occurred. This emphasizes the importance of human activity in shaping the current structure of the P. ramorum population on the West Coast of the United States.

scholarly journals Large-Scale Genotyping-by-Sequencing Indicates High Levels of Gene Flow in the Deep-Sea Octocoral Swiftia simplex (Nutting 1909) on the West Coast of the United States

PLoS ONE ◽  
2016 ◽  
Vol 11 (10) ◽  
pp. e0165279 ◽  
Author(s):  
Meredith V. Everett ◽  
Linda K. Park ◽  
Ewann A. Berntson ◽  
Anna E. Elz ◽  
Curt E. Whitmire ◽  
...  
Keyword(s):  
United States ◽  
Gene Flow ◽  
West Coast ◽  
Deep Sea ◽  
Large Scale ◽  
Genotyping By Sequencing ◽  
The United States ◽  
The West

scholarly journals A Climatology of 500-hPa Closed Lows in the Northeastern Pacific Ocean, 1948–2011

2014 ◽  
Vol 53 (6) ◽  
pp. 1578-1592 ◽  
Author(s):  
Nina S. Oakley ◽  
Kelly T. Redmond
Keyword(s):  
United States ◽  
Pacific Ocean ◽  
Interannual Variability ◽  
West Coast ◽  
The United States ◽  
Western United States ◽  
The West ◽  
Reanalysis Dataset ◽  
The Pacific ◽  
Northeastern Pacific

AbstractThe northeastern Pacific Ocean is a preferential location for the formation of closed low pressure systems. These slow-moving, quasi-barotropic systems influence vertical stability and sustain a moist environment, giving them the potential to produce or affect sustained precipitation episodes along the west coast of the United States. They can remain motionless or change direction and speed more than once and thus often pose difficult forecast challenges. This study creates an objective climatological description of 500-hPa closed lows to assess their impacts on precipitation in the western United States and to explore interannual variability and preferred tracks. Geopotential height at 500 hPa from the NCEP–NCAR global reanalysis dataset was used at 6-h and 2.5° × 2.5° resolution for the period 1948–2011. Closed lows displayed seasonality and preferential durations. Time series for seasonal and annual event counts were found to exhibit strong interannual variability. Composites of the tracks of landfalling closed lows revealed preferential tracks as the features move inland over the western United States. Correlations of seasonal event totals for closed lows with ENSO indices, the Pacific decadal oscillation (PDO), and the Pacific–North American (PNA) pattern suggested an above-average number of events during the warm phase of ENSO and positive PDO and PNA phases. Precipitation at 30 U.S. Cooperative Observer stations was attributed to closed-low events, suggesting 20%–60% of annual precipitation along the West Coast may be associated with closed lows.

Last Years

2018 ◽  
pp. 376-386
Author(s):  
Robert E. Lerner
Keyword(s):  
United States ◽  
West Coast ◽  
The United States ◽  
Virgin Islands ◽  
Ruptured Aneurysm ◽  
Nuclear War ◽  
The West ◽  
Richard Nixon ◽  
The 1950S

This chapter details Ernst Kantorowicz's final years. Kantorowicz died of a ruptured aneurysm in September 1963. Before this, he worked on a succession of recondite articles, attended the annual meetings of the Medieval Academy and the Byzantine Institute at “Oakbarton Dumps,” vacationed on the West Coast and the Virgin Islands, and carried on earnestly with his dining and imbibing. His politics also became more leftward from the postwar years until the time of his death. For a decade and a half he was deeply worried about the possibility of nuclear war, and he held the United States responsible. During the 1950s, he was bitterly hostile to Dwight Eisenhower and Richard Nixon. On the day after Kennedy's inauguration, Kantorowicz wrote the he “couldn't be worse than Eisenhower, ” although he did change his mind.

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