Zobrazeno 1 - 9
of 9
pro vyhledávání: '"David Ovens"'
Publikováno v:
Weather and Forecasting. 37:1741-1759
The development of sea surface temperature (SST) anomalies over the northeast Pacific and their impacts on lower-tropospheric air temperatures over the Pacific Northwest are examined. Northeast Pacific SST anomalies are influenced by the synoptic-sca
Autor:
David Ovens, Clifford F. Mass
Publikováno v:
Bulletin of the American Meteorological Society. 102:E168-E192
The Camp Fire event was associated with dry, northeasterly winds that descended the western slopes of the Sierra Nevada of Northern California during the early morning hours of 8 November 2018. The downslope winds peaked around sunrise, with strong w
Publikováno v:
Weather and Forecasting.
A series of major fires spread across eastern Washington and western Oregon starting on September 7, 2020, driven by strong easterly and northeasterly winds gusting to ~70 kt at exposed locations. This event was associated with a high-amplitude upper
Publikováno v:
Weather and Forecasting.
During late summer 2020, large wildfires over the Pacific Northwest produced dense smoke that impacted the region for an extended period. During this period of poor air quality, persistent low-level cloud coverage was poorly forecast by operational n
Autor:
Clifford F. Mass, David Ovens
Publikováno v:
Bulletin of the American Meteorological Society. 100:235-256
A series of large wildfires began over the terrain north of San Francisco, California, during the evening of 8 October 2017 and spread across nearly 250,000 acres, including areas near the towns of Santa Rosa and Napa. These “Wine Country” wildfi
Autor:
Robert B. Wilson, Joseph Yetter, Brian Lamb, John M. Sierchio, Joseph K. Vaughan, Eric P. Grimit, Pascal Storck, Sue A. Ferguson, Naydene Maykut, David Ovens, Mark Maciver, William O. J. Brown, Kenneth J. Westrick, Tony Eckel, Clint Bowman, Mark D. Albright, Brad Colman, Chris Hill, Richard Steed, Clifford F. Mass, Richard Stender, Mike Gilroy
Publikováno v:
Bulletin of the American Meteorological Society. 84:1353-1366
This paper examines the potential of regional environmental prediction by focusing on the local forecasting effort in the Pacific Northwest. A consortium of federal, state, and local agencies have funded the development and operation of a multifacete
Publikováno v:
Bulletin of the American Meteorological Society. 83:407-430
This paper examines the impacts of increasing horizontal resolution on the performance of mesoscale numerical weather prediction models. A review of previous studies suggests that decreasing grid spacing to approximately 10 km or less generally produ
Publikováno v:
Weather and Forecasting. 16:553-572
The timing and strength of surface troughs forecast by the Pennsylvania State University–National Center for Atmospheric Research fifth-generation Mesoscale Model (MM5) and the National Centers for Environmental Prediction's (NCEP's) Eta Model are
Autor:
David Ovens, David S. Battisti
Publikováno v:
Journal of the Atmospheric Sciences. 52:3911-3931
How the time-mean Hadley and Walker circulations affect the formation of a low-level equatorial easterly jet is investigated. Experiments are conducted for equinoctial conditions using a general circulation model, the Community Climate Model (CCM1),