American West Coast Research Articles

Seasonal Predictability of Bottom Temperatures Along the North American West Coast

AbstractBottom Temperature anomalies (BTA) along the North American West Coast strongly influence benthic and demersal marine species. However, to date seasonal BTA forecast efforts have been limited and sources of BTA predictability largely undiagnosed. Here, an empirical model called a Linear Inverse Model (LIM), constructed from a high‐resolution ocean reanalysis, is developed to predict North American West Coast BTAs and diagnose sources of predictive skill. The LIM is considerably more skillful than damped persistence, particularly in winter, with anomaly correlation (AC) skill values of 0.6 at 6‐month lead. Analysis of the LIM's dynamics shows that elevated BTA forecast skill is linked to developing El Niño‐Southern Oscillation (ENSO) events, driving predicted BTA responses whose peaks occur at longer leads with increasing latitude. Weaker ENSO‐related signals in the northern coastal region still yield high BTA skill because noise there is also weaker. Likewise, the LIM's forecast signal‐to‐noise ratio is highest for bathymetry depths of ∼50–150 m, maximizing forecast skill there. Together, these predictive components lead to “forecasts of opportunity” when LIM anticipates especially high prediction skill. For the top 20% of events identified by the LIM as the forecasts of opportunity, 6‐month lead BTA hindcasts have AC skill averaging 0.7, while the remaining 80% hindcasts have mean skill of only 0.4, suggesting that the LIM can leverage ENSO‐related predictability of BTA to produce skillful forecasts.

California Dreamin’ : Trois variations sur le lieu

The representation of California in French literature has become increasingly prevalent in the past twenty years. The American West Coast, and particularly the metropolis of Los Angeles, do not conform to an established portrait of the United States centered on New York, Chicago, and the South. This article presents three literary interpretations of California by French authors and puts them in conversation with common preconceptions on the state: its superficiality, its disconnection, its glamor. Laure Murat (Ceci n’est pas une ville, 2016), Jean Rolin (Le Ravissement de Britney Spears, 2011), and Maylis de Kerangal (Naissance d’un pont, 2010) approach Californian spaces and communities through contrasting proximity to their referential truth and for three different narrative aims: Murat composes a meditative autobiography, Rolin an (absurd) spy thriller, and Kerangal a globalized Western. All three confront the “non-spaces” and “blank zones” that define or threaten their narrative environments, looming deserts reputedly hostile to meaning, beauty, and lived experiences. Each author gives particular care to the spatial systems borne of a culture that values diversity, fame, money, and the car.

Banana Ketchup

Banana ketchup is an iconic marker of Filipino cultural identity. Across the homeland/diaspora divide, the Filipino public celebrates the memory of Maria Y. Orosa, the food scientist, early immigrant to the American West Coast, and anti-Japanese guerrilla fighter, for her creation of the country’s favorite sauce or sawsawan. The history of this beloved food item is often recounted as a narrative of scientific innovation, anticolonial resistance, and sovereignty. This essay explores the work that such narratives do, noting not only how they are invoked as frames for Filipinos and Filipino Americans’ critiques of gustatory coloniality but also how they can themselves veil other political realities deserving of attention. At banana ketchup manufacturing plants in the Philippines, laborers and allies reimagine the condiment not as a proud symbol of identity but rather as a vessel of labor exploitation, union busting, and police brutality. This alternative narrative is often eclipsed by modes of storytelling that elevate Orosa’s ingenious substitution of a native fruit like bananas for an imported product like tomatoes as an emblem of gustatory independence. Documenting an essential piece of Filipino food history yet to receive much scholarly attention, this essay ultimately asks how ways of remembering food history can themselves become ways of forgetting. Its aim is to offer an intervention toward bringing cultural memory and contemporary labor struggles between the Filipino homeland and diaspora into political relation.

An Ephemeral Look at Russian Anarchist Life in the United States

Abstract: In September 1915, San Francisco resident Ernest Kundy received a picture postcard from an unnamed correspondent. Produced by the Anarchist Red Cross of Detroit, the postcard featured a depiction of the Bloody Sunday massacre which sparked Russia’s 1905 revolution and served as one of the most important episodes in the history of revolutionary martyrdom. By examining every aspect of the postcard this article reveals, layer by layer, its connections to Russian anarchist life in the United States. The article begins by analysing the image on the front, explaining how illustrations like the one in question by Fortunino Matania were turned into widely disseminated postcards that spread revolutionary messages well beyond Russian borders. Turning to the information on the back, the article next explores the history of the Anarchist Red Cross in the US and the role that it played in keeping anarchism alive for recent immigrants from Russia. Then the links between the sender’s handwritten message and an area of Chicago that features prominently in histories of immigrant life, the settlement movement and the US labour movement — Halsted Street — are considered. Finally, the connections between the recipient’s family and a 1915 bank robbery in California serve as a window into the history of Russian anarchist circles on the American West Coast.

New records and range extension of two deep-sea skate genera,AmblyrajaandNotoraja(Elasmobranchii: Rajiformes), in the southeastern Pacific Ocean

AbstractTwo species of deep-sea skates,Amblyraja frerichsiandNotoraja martinezi, are reported for the first time in Peruvian waters, representing the first record of their respective genera from the country. Earlier,A.frerichsiwas known from both the southwestern Atlantic (off Brazil, Uruguay, and Argentina) and southeastern Pacific (off Chile), whileN.martineziwas known from Costa Rica to Ecuador in the eastern-central and southeastern Pacific. This study contributes to the limited knowledge of deep-sea fish diversity along the South American west coast, and stresses the need of further taxonomic research in the region, particularly in light of the ecological importance of this group of fishes in marine ecosystems and its conservation state worldwide.

Revisiting the Relationship between the North Pacific High and Upwelling Winds along the West Coast of North America in the Present and Future Climate

Abstract The wind-driven circulation is an important driver of upwelling in the California Current System, a key factor in maintaining a productive ecosystem. In summer, the North Pacific high (NPH) dominates the atmospheric circulation, including the nearshore winds. The impact of the NPH on the surface winds along the North American west coast during summer is examined using the ECMWF Reanalysis v5 (ERA5) and the Community Earth System Model version 1 (CESM1) large ensemble of simulations. The strength, latitude, and longitude of the sea level pressure (SLP) and subsidence at 500 hPa are used to assess the NPH and its variability. While both the surface high pressure cell and subsidence are related to the interannual variability of the surface winds over the North Pacific, the strength of subsidence has a much larger effect on the coastal winds than the variability in SLP. Based on the mean of the 40 CESM simulations, future changes in upwelling also more strongly coincide with changes in subsidence than in SLP. Subsidence and southward upwelling-favorable winds increase off the Canadian coast, with the reverse occurring off the U.S. West Coast, by the end of the twenty-first century. In particular, the intermember correlation between the changes in the nearshore surface winds and the 500-hPa pressure vertical velocity reaches 0.75 and 0.87 in the southern and northern portions of the northeast Pacific, respectively. The effect of the subsidence on upwelling winds in the future is confirmed by the CESM2 large ensemble.

Art and the City Fiction in Japanese American Internment Camps: Sequels for Resiliency

This article delves into the creation a fictional city solely for the development of Japanese American internment camps and the way in which sustainable arts and crafts played a significant role in ensuring survival in such a hostile environment. To this aim, we searched the literature and reviewed archives, primarily from the American West Coast. We demonstrate that beyond adaptation to the circumstances, the visual representation of the new city’s settlement, founding, and daily activities, instead of adding to the typical panoptic or sombre prison imagery, remains inscribed in the images selected by the inmates, and that the use of such images precisely fostered the inmates’ resiliency. This leads us to deduce that such ’city fiction’ was necessary in this case for survival and endurance, and that its artistic representation was primarily incorporated into the State’s ideological apparatus. On the other hand, occasional fissures subtly seethed with the violence exerted in the camps. In this way, we conclude that the artistic activity itself justified the city fiction, among other situations, revealing the conditions of systemic violence and oppression faced by the internees. Within this framework, we deem that the artworks hereby generated constitute a paramount historical document for resiliency’s sake. The arguments contained herein are still relevant, because everywhere around the world, situations of exclusion and confinement of displaced immigrants, or simply those considered misfits, are repeated time and time again. Nor have we alleviated the issue in any way today, since we disregard the lessons learned from the past.

Large‐Scale Circulation Context for North American West Coast Atmospheric Rivers: Influence of the Subseasonal NPO/WP Teleconnection

AbstractUnderstanding the variability of atmospheric rivers (ARs) on subseasonal time scales is pivotal for efficient water resource management along the west coast of North America. ARs during 1980–2018 based on the Modern‐Era Retrospective analysis for Research and Applications, version 2 are analyzed to quantify the modulation of winter (December–February) landfalling ARs in the western US by leading subseasonal teleconnections, focusing on pentad evolution rather than seasonal‐mean patterns. The growth phase of the North Pacific Oscillation/West Pacific (NPO/WP) teleconnection—the second leading pattern in 200‐hPa geopotential heights in boreal winter—is found to be particularly influential in modulating the number of landfalling ARs in this region. In the positive phase of NPO/WP growth, the presence of anomalous low pressure centered just south of Alaska (i.e., a strengthening of the Aleutian Low) and anomalous high pressure around Hawaii results in moisture convergence in the central and eastern Pacific, bringing southwesterly moisture fluxes to the coast and inland. The modulation by NPO/WP is stronger than by commonly‐considered climate variability modes, such as the Pacific/North American (PNA) pattern. Although southwesterly fluxes are stronger over the Pacific Ocean during the positive phase of PNA, they tend to transition to southerly fluxes before extending inland, resulting in smaller overland impacts in the western US. The analysis of temporal evolutions indicates AR activity peaks 5 days after the mature phase of NPO/WP growth, as in the case of PNA. Overall, the study suggests potential subseasonal predictability of US West Coast ARs from incipient‐phase knowledge of the leading teleconnection patterns, especially the NPO/WP.

Prefigurative Poetics: Language Writing’s New Sentence and the Politics of the New Left

This article argues that prefiguration is an essential concept for understanding the postwar avant-garde’s affiliation with social movements. Against the backdrop of important recent arguments that link Language writing to the failings and inner conflicts of the 1960s, this essay claims that Language writing was bred out of a complex dialogue with the New Left as both a result of a disillusionment with political speech and an attempt to carry on the New Left’s democratic experiments. I show how the technique invented by Ron Silliman and other American West Coast poets called The New Sentence not only was a way of posturing in the established language of the New Left, but actively sought to continue the political legacy of the 1960s in much more direct ways than previously acknowledged. Most importantly, the New Sentence inherited the notion of prefigurative politics and the hopes that such a politics, if transferred to poetic form, could enact change by constructing an alternative model of society. As a merger between New Left politics and institutional critique, the New Sentence—and other avant-garde strategies after ‘68—prefigures new ways of life through aesthetic form.

Moving civilians to the front of patrol cars: Built space, embodiment, and social control during police encounters

This article uses recordings of on-the-street police encounters to analyze how officers move civilians to the front of patrol cars and request them to sit on the bumper or put their hands on the hood. These spatial maneuvers entail a suspension of civilians' movement rights, establishing their identity as legally detained subjects. Thus, though seemingly mundane, by moving civilians to the front of the car, officers exercise social control in its most elementary form: practical tasks comprising methodic police work. Dashcam recordings in English were obtained from the police department of an American West Coast city and analyzed using conversation analysis. Findings demonstrate that having civilians sit on the bumper or put their hands on the hood imposes asymmetric participation frameworks whereby officers maximize their control over their subjects' bodies while restricting the latter's access to them. Such asymmetry is adapted to (a) tasks officers undertake to workout out an outcome for the encounter and (b) situational contingencies associated with possible threat. Importantly, officers accomplish such spatial formations – and, thereby, civilians' status as detained subjects – moment-by-moment, continuously monitoring their subjects' bodies for compliance and incrementing their actions as trouble emerges.

Place formulations and the incongruity procedure: On police officers’ practices for assembling appearances of wrongdoing

‘Place’ is central to police work. Not only does the law prescribe proper uses of public spaces, but officers learn how to infer suspicion from people’s conduct and appearances at particular places. This article uses conversation analysis to examine how officers formulate place to render suspicious behavior accountably visible in their interactions with the public. Data come from recordings of police encounters in two American West Coast cities – the first dataset constitutes dashcam videos, and the second, videos recorded during ride-alongs. Findings suggest that officers use place formulations to (1) indicate violations in legally prescribed uses of space, (2) highlight incongruent elements in civilians’ conduct (e.g. proximity to incriminating objects), serving as a basis for inferring concealed wrongdoing, and (3) cast civilians’ presence in particular geographical areas as ‘out-of-place’. As place formulations do things in the interaction (i.e. accusing, questioning, accounting), the meaning officers ascribe to place is contingent upon ongoing courses of action.

Population structure and adaptive differentiation in the sea cucumber Apostichopus californicus and implications for spatial resource management.

A growing body of evidence suggests that spatial population structure can develop in marine species despite large population sizes and high gene flow. Characterizing population structure is important for the effective management of exploited species, as it can be used to identify appropriate scales of management in fishery and aquaculture contexts. The California sea cucumber, Apostichopus californicus, is one such exploited species whose management could benefit from further characterization of population structure. Using restriction site-associated DNA (RAD) sequencing, we developed 2075 single nucleotide polymorphisms (SNPs) to quantify genetic structure over a broad section of the species' range along the North American west coast and within the Salish Sea, a region supporting the Washington State A. californicus fishery and developing aquaculture production of the species. We found evidence for population structure (global fixation index (FST) = 0.0068) with limited dispersal driving two patterns of differentiation: isolation-by-distance and a latitudinal gradient of differentiation. Notably, we found detectable population differences among collection sites within the Salish Sea (pairwise FST = 0.001-0.006). Using FST outlier detection and gene-environment association, we identified 10.2% of total SNPs as putatively adaptive. Environmental variables (e.g., temperature, salinity) from the sea surface were more correlated with genetic variation than those same variables measured near the benthos, suggesting that selection on pelagic larvae may drive adaptive differentiation to a greater degree than selection on adults. Our results were consistent with previous estimates of and patterns in population structure for this species in other extents of the range. Additionally, we found that patterns of neutral and adaptive differentiation co-varied, suggesting that adaptive barriers may limit dispersal. Our study provides guidance to decision-makers regarding the designation of management units for A. californicus and adds to the growing body of literature identifying genetic population differentiation in marine species despite large, nominally connected populations.

Sunflower sea star predation on urchins can facilitate kelp forest recovery.

The recent collapse of predatory sunflower sea stars (Pycnopodia helianthoides) owing to sea star wasting disease (SSWD) is hypothesized to have contributed to proliferation of sea urchin barrens and losses of kelp forests on the North American west coast. We used experiments and a model to test whether restored Pycnopodia populations may help recover kelp forests through their consumption of nutritionally poor purple sea urchins (Strongylocentrotus purpuratus) typical of barrens. Pycnopodia consumed 0.68 S. purpuratus d-1, and our model and sensitivity analysis shows that the magnitude of recent Pycnopodia declines is consistent with urchin proliferation after modest sea urchin recruitment, and even small Pycnopodia recoveries could generally lead to lower densities of sea urchins that are consistent with kelp-urchin coexistence. Pycnopodia seem unable to chemically distinguish starved from fed urchins and indeed have higher predation rates on starved urchins owing to shorter handling times. These results highlight the importance of Pycnopodia in regulating purple sea urchin populations and maintaining healthy kelp forests through top-down control. The recovery of this important predator to densities commonly found prior to SSWD, whether through natural means or human-assisted reintroductions, may therefore be a key step in kelp forest restoration at ecologically significant scales.

The Valparaíso (Chile) Anglophone Periodical Press: Voices from the Borders of Empire

Whenstudying the anglophone periodicals produced in Valparaíso, Chile, the mainport on the South American West Coast of the Pacific in the 19th century and apoint of connection and transoceanic transit before the opening of the PanamaCanal, we stand face to face with the reality of multilingualism in a specificgeo-cultural space. This place ⸻  theHistoric Quarter of the Seaport of Valparaiso, recognised by UNESCO as a WorldHeritage Site for its cultural diversity, since ‘the city was populated and influencedby people from around the world’⸻ was co-inhabited by immigrant colonies fromdifferent European countries and linked to navigation, industry and globaltrade. Alongside the group belonging to the British diaspora, there were otherforeign communities established in this city: German-speaking, French-speaking,Italian-speaking (among others less numerous). Beyond their occupations, eachof these groups of settlers had its own social, educational and culturalinstitutions, and, of course, its own print media. Each newspaper was a keyinstrument in maintaining the cohesion of these foreign language communities,around a common identity cultivated in reference to their homeland. 

Identifying Geographical Patterns of Transient Deformation in the Geological Sea Level Record

AbstractIn this study, we examine the effect of transient mantle creep on the prediction of glacial isostatic adjustment (GIA) signals. Specifically, we compare predictions of relative sea level (RSL) change from GIA from a set of Earth models in which transient creep parameters are varied in a simple Burgers model to a reference case with a Maxwell viscoelastic rheology. The model predictions are evaluated in two ways: first, relative to each other to quantify the effect of parameter variation, and second, for their ability to reproduce well‐constrained sea level records from selected locations. Both the resolution and geographic location of the RSL observations determine whether the data can distinguish between model cases. Model predictions are most sensitive to the inclusion of transient mantle deformation in regions that are near‐field and peripheral relative to former ice sheets. This sensitivity appears particularly true along the North American west coast in the region of the former Cordilleran Ice Sheet, which experienced rapid sea‐level fall following deglaciation between 14 and 12 kyr BP. Relative to the Maxwell case, Burgers models better reproduce this rapid phase of regional postglacial sea‐level fall. As well, computed goodness‐of‐fit values in this region show a clear preference for models where transient deformation is present in the whole or lower mantle, and for models where the rigidity of the Kelvin element is weakened relative to the rigidity of the Maxwell element. In contrast, model predictions of relative sea‐level change in the far‐field show weak sensitivity to the inclusion of transient deformation.

Wetter California Projected by CMIP6 Models With Observational Constraints Under a High GHG Emission Scenario

AbstractAs the world's fifth‐largest economy entity, California (CA) is vulnerable to climate changes especially the magnitude of winter (wet season) precipitation that is closely linked to regional drought severity, vegetation growth, and wildfire activities. However, the fate of CA precipitation in the future remains highly uncertain, for example, the state‐of‐the‐art Earth system models (ESMs) from the Coupled Model Intercomparison Project Phase 6 (CMIP6) projected −3% to +42% and −27% to +63% precipitation changes in northern and central‐southern CA, respectively, under the high greenhouse gas (GHG) emission scenario (SSP585). In this work, we applied the Pareto optimality concept and used observed teleconnection patterns (causal relationships between ocean regions and CA precipitation) to mechanistically constrain CMIP6 projected CA precipitations. We estimated that precipitation will robustly increase by 0.4–1.3 mm d−1 (10–34%) over northern CA and increase by 0.1–0.5 mm d−1 (7–32%) over central‐southern CA by the end of the 21st century compared with present‐day. Up to 71% of ESM projection uncertainties were reduced mainly due to the strong and consistent causal relationship between North American west coast sea level pressure and CA precipitation in both observations and CMIP6 models. Our results suggest that teleconnection patterns are powerful mechanistic constraints that can help explain and reduce uncertainties in ESM projections.

Fisheries Surveys Are Essential Ocean Observing Programs in a Time of Global Change: A Synthesis of Oceanographic and Ecological Data From U.S. West Coast Fisheries Surveys

As climate change and other anthropogenic impacts on marine ecosystems accelerate in the 21st century, there is an increasing need for sustained ocean time series. A robust and collaborative network of regional monitoring programs can detect early signs of unanticipated changes, provide a more holistic understanding of ecosystem responses, and prompt faster management actions. Fisheries-related surveys that collect fisheries-independent data (hereafter referred to as “fisheries surveys”) are a key pillar of sustainable fisheries management and are ubiquitous in the United States and other countries. From the perspective of ocean observing, fisheries surveys offer three key strengths: (1) they are sustained due to largely consistent funding support from federal and state public sector fisheries agencies, (2) they collect paired physical, chemical, and biological data, and (3) they have large and frequently overlapping spatial footprints that extend into the offshore region. Despite this, information about fisheries survey data collection can remain poorly known to the broader academic and ocean observing communities. During the 2019 CalCOFI Symposium, marking the 70th anniversary of the California Cooperative Oceanic Fisheries Investigations (CalCOFI), representatives from 21 ocean monitoring programs on the North American West Coast came together to share the status of their monitoring programs and examine opportunities to leverage efforts to support regional ecosystem management needs. To increase awareness about collected ocean observing data, we catalog these ongoing ocean time series programs and detail the activities of the nine major federal or state fisheries surveys on the U.S. West Coast. We then present three case studies showing how fisheries survey data contribute to the understanding of emergent ecosystem management challenges: marine heatwaves, ocean acidification, and contaminant spills. Moving forward, increased cross-survey analyses and cooperation can improve regional capacity to address emerging challenges. Fisheries surveys represent a foundational blueprint for ecosystem monitoring. As the international community moves toward a global strategy for ocean observing needs, fisheries survey programs should be included as data contributors.

Probabilistic Predictions from Deterministic Atmospheric River Forecasts with Deep Learning

Abstract Deep-learning (DL) postprocessing methods are examined to obtain reliable and accurate probabilistic forecasts from single-member numerical weather predictions of integrated vapor transport (IVT). Using a 34-yr reforecast, based on the Center for Western Weather and Water Extremes West-WRF mesoscale model of North American West Coast IVT, the dynamically/statistically derived 0–120-h probabilistic forecasts for IVT under atmospheric river (AR) conditions are tested. These predictions are compared with the Global Ensemble Forecast System (GEFS) dynamic model and the GEFS calibrated with a neural network. In addition, the DL methods are tested against an established, but more rigid, statistical–dynamical ensemble method (the analog ensemble). The findings show, using continuous ranked probability skill score and Brier skill score as verification metrics, that the DL methods compete with or outperform the calibrated GEFS system at lead times from 0 to 48 h and again from 72 to 120 h for AR vapor transport events. In addition, the DL methods generate reliable and skillful probabilistic forecasts. The implications of varying the length of the training dataset are examined, and the results show that the DL methods learn relatively quickly and ∼10 years of hindcast data are required to compete with the GEFS ensemble.

Using Saildrones to Assess the SMAP Sea Surface Salinity Retrieval in the Coastal Regions

Remote sensing of sea surface salinity (SSS) near land is difficult due to land contamination. In this study, we assess SSS retrieved from the Soil Moisture Active Passive (SMAP) mission in coastal region. SMAP SSS products from the Jet Propulsion Laboratory (JPL), and from the Remote Sensing Systems (RSS) are collocated with in situ data collected by saildrones during the North American West Coast Survey. Satellite and saildrone salinity measurements reveal consistent large-scale features: the fresh water (low SSS) assocciated with the Columbia River discharge, and the relatively salty water (high SSS) near Baja California associated with regional upwelling. The standard deviation of the difference (stdD) for collocations with SMAP Level 3 (8 days average) between 40 and 100km from land is 0.51 (0.56) psu for JPL V5 (RSS V4 70km). This is encouraging for the potential application of SMAP SSS in monitoring coastal zone freshwater particularly where there exists large freshwater variance. We analyze the different land correction approaches independently developed at JPL and RSS using SMAP Level 2 matchups. We found that JPL's land correction method is more promising in pushing SMAP SSS retrieval towards land. For future improvement, we suggest implementing dynamic land correction versus the current climatology based static land correction to reduce uncertainty in estimating land contribution. In Level 2 to Level 3 processing, a more rigorous quality control may help to eliminate outliers and deliver reliable Level 3 products without over-smoothing, which is important in resolving coastal processes such as fronts or upwelling.

Whither the “Hindoo Invasion”? South Asians in the Pacific Northwest of the United States, 1907–1930

ABSTRACT The first decade of the twentieth century saw several thousand men migrate from India to the North American West Coast. While most settled in British Columbia or California, a smaller number moved to the US Pacific Northwest states of Washington and Oregon. A series of violent riots in 1907–8 drove many from the region. The basic contours of this population in the region after this time remain unclear. I uncover evidence that Indians persisted for a longer time period, and in more varied locations and occupations than some previous research suggests, but that ultimately violent exclusion led them to disappear almost entirely from the region. I investigate the conditions in which these men lived and toiled, and the ways in which they were viewed by the larger society, particularly in terms of evolving concepts of race and assimilation.