Lead Poisoning of Bald (Haliaeetus leucocephalus) and Golden (Aquila chrysaetos) Eagles in the US Inland Pacific Northwest Region—An 18-year Retrospective Study: 1991–2008

2010 ◽  
Vol 24 (4) ◽  
pp. 279-287 ◽  
Author(s):  
Erik Stauber ◽  
Nickol Finch ◽  
Patricia A. Talcott ◽  
John M. Gay
Keyword(s):  
Retrospective Study ◽  
Pacific Northwest ◽  
Lead Poisoning ◽  
Haliaeetus Leucocephalus ◽  
Aquila Chrysaetos ◽  
The Us ◽  
Northwest Region

scholarly journals Tagging moisture sources with Lagrangian and inertial tracers: application to intense atmospheric river events

2018 ◽  
Vol 9 (2) ◽  
pp. 785-795 ◽  
Author(s):  
Vicente Pérez-Muñuzuri ◽  
Jorge Eiras-Barca ◽  
Daniel Garaboa-Paz
Keyword(s):  
Pacific Northwest ◽  
Wind Flow ◽  
Atmospheric Moisture ◽  
Atmospheric Rivers ◽  
Atmospheric River ◽  
Moisture Sources ◽  
The Pacific ◽  
The Us ◽  
Northwest Region ◽  
Thermodynamic Processes

Abstract. Two Lagrangian tracer tools are evaluated for studies on atmospheric moisture sources and pathways. In these methods, a moisture volume is assigned to each particle, which is then advected by the wind flow. Usual Lagrangian methods consider this volume to remain constant and the particle to follow flow path lines exactly. In a different approach, the initial moisture volume can be considered to depend on time as it is advected by the flow due to thermodynamic processes. In this case, the tracer volume drag must be taken into account. Equations have been implemented and moisture convection was taken into account for both Lagrangian and inertial models. We apply these methods to evaluate the intense atmospheric rivers that devastated (i) the Pacific Northwest region of the US and (ii) the western Iberian Peninsula with flooding rains and intense winds in early November 2006 and 20 May 1994, respectively. We note that the usual Lagrangian method underestimates moisture availability in the continent, while active tracers achieve more realistic results.

scholarly journals NEARSHORE WAVE PREDICTIONS ALONG THE OREGON AND SOUTHWEST WASHINGTON COAST

2012 ◽  
Vol 1 (33) ◽  
pp. 52
Author(s):  
Gabriel García-Medina ◽  
H. Tuba Özkan-Haller ◽  
Peter Ruggiero
Keyword(s):  
Pacific Northwest ◽  
Wave Model ◽  
The Public ◽  
The Us ◽  
Southwest Region ◽  
Forecasting System ◽  
Northwest Region ◽  
Wave Forecasting ◽  
Ocean Observing ◽  
Observing Systems

A nearshore wave forecasting system was implemented to elevate the ocean information resources in the US Pacific Northwest region. This implementation brings the US State of Oregon and the Southwest region of the state of Washington to the same level of prediction as the neighboring state of California and other regions of the country. It was achieved using the Wavewatch III numerical wave model, which was validated in intermediate to shallow waters. The forecasting system provides data at a 30 arc-second resolution from the shelf break up to a depth of 20 meters. The data is distributed to the public at no cost as part of a greater initiative put together by the Networked Association of Ocean Observing Systems. Information generated by this implementation is presently being used to provide boundary conditions to localized applications in the region as well as to beach users.

Coastal ocean variability in the US Pacific Northwest region: seasonal patterns, winter circulation, and the influence of the 2009–2010 El Niño

2015 ◽  
Vol 65 (12) ◽  
pp. 1643-1663 ◽  
Author(s):  
Scott M. Durski ◽  
Alexander L. Kurapov ◽  
John S. Allen ◽  
P. Michael Kosro ◽  
Gary D. Egbert ◽  
...  
Keyword(s):  
Pacific Northwest ◽  
El Niño ◽  
El Nino ◽  
Coastal Ocean ◽  
Seasonal Patterns ◽  
Ocean Variability ◽  
The Us ◽  
Winter Circulation ◽  
Northwest Region

scholarly journals Reconstructing Aircraft Trajectories from Multi-Return Airborne Laser-Scanning Data

2019 ◽  
Vol 11 (19) ◽  
pp. 2258
Author(s):  
Demetrios Gatziolis ◽  
Robert J. McGaughey
Keyword(s):  
Pacific Northwest ◽  
Laser Scanning ◽  
Airborne Laser Scanning ◽  
Airborne Laser ◽  
The Us ◽  
Forested Areas ◽  
Additional Costs ◽  
Novel Method ◽  
Aircraft Trajectories ◽  
Northwest Region

Data describing aircraft position and attitude are essential to computing return positions from ranging data collected during airborne laser scanning (ALS) campaigns. However, these data are often excluded from the products delivered to the client and their recovery after the contract is complete can require negotiations with the data provider, may involve additional costs, or even be infeasible. This paper presents a rigorous, fully automated, novel method for recovering aircraft positions using only the point cloud. The study used ALS data from five acquisitions in the US Pacific Northwest region states of Oregon and Washington and validated derived aircraft positions using the smoothed best estimate of trajectory (SBET) provided for the acquisitions. The computational requirements of the method are reduced and precision is improved by relying on subsets of multiple-return pulses, common in forested areas, with widely separated first and last returns positioned at opposite sides of the aircraft to calculate their intersection, or closest point of approach. To provide a continuous trajectory, a cubic spline is fit to the intersection points. While it varies by acquisition and parameter settings, the error in the computed aircraft position seldom exceeded a few meters. This level of error is acceptable for most applications. To facilitate use and encourage modifications to the algorithm, the authors provide a code that can be applied to data from most ALS acquisitions.

scholarly journals Factors Associated with Initial Public School Reopening Plans During the US COVID-19 Pandemic: a Retrospective Study

2021 ◽  
Author(s):  
Brystana G. Kaufman ◽  
Nirosha Mahendraratnam ◽  
Thuy-vi Nguyen ◽  
Laura Benzing ◽  
Jessica Beliveau ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Public School ◽  
Factors Associated ◽  
The Us

scholarly journals Inaccuracies in survey reporting of alcohol consumption

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Conor Gilligan ◽  
Kristen G. Anderson ◽  
Benjamin O. Ladd ◽  
Yun Ming Yong ◽  
Michael David
Keyword(s):  
Public Health ◽  
College Students ◽  
Alcohol Consumption ◽  
Survey Data ◽  
Pacific Northwest ◽  
Accurate Calculation ◽  
Standard Drink ◽  
Web Based ◽  
The Us ◽  
Serving Sizes

Abstract Background Alcohol consumption estimates in public health predominantly rely on self-reported survey data which is likely to underestimate consumption volume. Surveys tend to ask specifically about standard drinks and provide a definition or guide in an effort to gather accurate estimates. This study aimed to investigate whether the inclusion of the term standard drinks with pictorial guide is associated with an adjustment in self-reported alcohol volume. Methods A web-based survey was administered with AUDIT-C questions repeated at the beginning and end of the survey with and without the standard drink term and guide. The order in which respondents were presented with the different question types was randomised. Two cohorts of university/college students in NSW Australia (n = 122) and the US Pacific Northwest (n = 285) completed the survey online. Results Australian students did not adjust their responses to questions with and without the standard drink term and pictorial guide. The US students were more likely to adjust their responses based on the detail of the question asked. Those US students who drank more frequently and in greater volume were less likely to adjust/apply a conversion to their consumption. Conclusions This study supports previous findings of the inaccuracy of alcohol consumption volume in surveys, but also demonstrates that an assumption of underestimation cannot be applied to all individual reports of consumption. Using additional questions to better understand drink types and serving sizes is a potential approach to enable accurate calculation of underestimation in survey data.

scholarly journals Radiocarbon Calibration around AD 1900 from Scots Pine (Pinus Sylvestris) tree rings from Northern Norway

Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1775-1784
Author(s):  
Helene Svarva ◽  
Pieter Grootes ◽  
Martin Seiler ◽  
Terje Thun ◽  
Einar Værnes ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Pacific Northwest ◽  
Scots Pine ◽  
Tree Rings ◽  
Fossil Fuels ◽  
Pacific Coast ◽  
Northern Norway ◽  
Pine Tree ◽  
The Pacific ◽  
The Us

ABSTRACTTo resolve an inconsistency around AD 1895 between radiocarbon (14C) measurements on oak from the British Isles and Douglas fir and Sitka spruce from the Pacific Northwest, USA, we measured the 14C content in single-year tree rings from a Scots pine tree (Pinus sylvestris L.), which grew in a remote location in Saltdal, northern Norway. The dataset covers the period AD 1864–1937 and its results are in agreement with measurements from the US Pacific coast around 1895. The most likely explanation for older ages in British oak in this period seems to be 14C depletion associated with the combustion of fossil fuels.

Low tunnels for season extension of day-neutral strawberries in the US Pacific Northwest

2021 ◽  
pp. 269-276
Author(s):  
J. Fernandez-Salvador ◽  
E. Chernoh ◽  
A. Pheil ◽  
B. Renne
Keyword(s):  
Pacific Northwest ◽  
The Us ◽  
Season Extension ◽  
Low Tunnels

Integrating ocean wave energy at large-scales: A study of the US Pacific Northwest

2015 ◽  
Vol 76 ◽  
pp. 551-559 ◽  
Author(s):  
Simon C. Parkinson ◽  
Ken Dragoon ◽  
Gordon Reikard ◽  
Gabriel García-Medina ◽  
H. Tuba Özkan-Haller ◽  
...  
Keyword(s):  
Pacific Northwest ◽  
Wave Energy ◽  
Ocean Wave ◽  
Ocean Wave Energy ◽  
The Us
Sign in / Sign up

Export Citation Format

Share Document