Mechanisms Responsible for the Observed Thermodynamic Structure in a Convective Boundary Layer Over the Hudson Valley of New York State

2017 ◽  
Vol 164 (1) ◽  
pp. 89-106
Author(s):  
Jeffrey M. Freedman ◽  
David R. Fitzjarrald
Keyword(s):  
Boundary Layer ◽  
New York ◽  
Convective Boundary Layer ◽  
New York State ◽  
Convective Boundary ◽  
York State ◽  
Hudson Valley ◽  
Thermodynamic Structure

scholarly journals Trilobites from the Rickard Hill facies of the Saugerties Member of the Schoharie Formation, eastern New York (upper Emsian and Lower Devonian): a case study in taphonomy and sequence stratigraphy from glacial erratics

2017 ◽  
Vol 53 ◽  
pp. 269-284
Author(s):  
Martin A. Becker ◽  
Rebecca B. Chamberlain ◽  
Harry M. Maisch ◽  
Alex Bartholomew ◽  
John A. Chamberlain
Keyword(s):  
New York ◽  
New Jersey ◽  
Chemical Weathering ◽  
Lower Devonian ◽  
New York State ◽  
Laurentide Ice Sheet ◽  
York State ◽  
Hudson Valley ◽  
Faunal Abundance ◽  
Physical And Chemical

Glacial erratics belonging to the Rickard Hill facies (RHF) of the Saugerties Member of the Schoharie Formation (upper Emsian: Lower Devonian) occur scattered throughout the Piedmont of northern New Jersey and Lower Hudson Valley of New York. These RHF glacial erratics contain an assemblage of trilobites belonging to: Anchiopella anchiops, Burtonops cristatus, Calymene platys, Terataspis grandis, cf. Trypaulites sp. and cf. Coniproetus sp. This RHF glacial erratic trilobite assemblage consists predominately of disarticulated cephala and pygidia that were originally preserved as part of a localized, third-order eustatic sea level lag deposit in the Helderberg Mountains region of central New York State and subsequently transported in glacially plucked blocks by the Hudson-Champlain Lobe of the Laurentide Ice Sheet southward into New Jersey. Physical and chemical weathering during glacial erosion, transportation and deposition of the RHF glacial erratics has revealed some anatomical features of these trilobites in high detail along with other invertebrates. This unique sequence of weathering reveals additional characteristics that bear upon issues of bathymetric controls on upper Schoharie Formation lithology, trilobite faunal abundance and taphonomy during the upper Emsian (Lower Devonian) of eastern New York State.  

scholarly journals Convective Boundary Layer Depth Estimation from S-Band Dual-Polarization Radar

2018 ◽  
Vol 35 (8) ◽  
pp. 1723-1733 ◽  
Author(s):  
John R. Banghoff ◽  
David J. Stensrud ◽  
Matthew R. Kumjian
Keyword(s):  
Boundary Layer ◽  
New York ◽  
Convective Boundary Layer ◽  
Depth Estimation ◽  
Dual Polarization ◽  
Layer Depth ◽  
Reasonable Estimate ◽  
Convective Boundary ◽  
Using Data ◽  
Differential Reflectivity

AbstractThis study investigates Bragg scatter signatures in dual-polarization radar observations, which are defined by low differential reflectivity values, as a proxy for convective boundary layer (CBL) depth. Using data from the WSR-88D in Twin Lakes, Oklahoma (KTLX), local minima in quasi-vertical profiles of are found to provide a reasonable estimate of CBL depth when compared with depth estimates from upper-air soundings from Norman, Oklahoma (KOUN), during 2014. The 243 Bragg scatter and upper-air sounding CBL depth estimates have a correlation of 0.90 and an RMSE of 254 m. Using Bragg scatter as a proxy for CBL depth was expanded to other seasons and locations—performing well in Wilmington, Ohio; Fairbanks, Alaska; Tucson, Arizona; Minneapolis, Minnesota; Albany, New York; Portland, Oregon; and Tampa, Florida—showing its potential usefulness in monitoring CBL depth throughout the year in a variety of geographic locations and meteorological conditions.

scholarly journals Summertime nitrous acid chemistry in the atmospheric boundary layer at a rural site in New York State

2002 ◽  
Vol 107 (D21) ◽  
pp. ACH 13-1-ACH 13-11 ◽  
Author(s):  
Xianliang Zhou ◽  
Kevin Civerolo ◽  
Hongping Dai ◽  
Gu Huang ◽  
James Schwab ◽  
...  
Keyword(s):  
Boundary Layer ◽  
New York ◽  
Atmospheric Boundary Layer ◽  
Nitrous Acid ◽  
New York State ◽  
Rural Site ◽  
York State

OUTSTANDING LOWER DEVONIAN MILANKOVITCH CYCLICITIES EXPOSED IN THE HUDSON VALLEY, NEW YORK STATE

2017 ◽  
Author(s):  
Emily Correia ◽  
◽  
Alex J. Bartholomew ◽  
Anne-Christine da Silva ◽  
Carlton E. Brett ◽  
...  
Keyword(s):  
New York ◽  
Lower Devonian ◽  
New York State ◽  
York State ◽  
Hudson Valley

scholarly journals Validation and deployment of the first Lidar based weather observation network in New York State: The NYS MesoNet Project

2018 ◽  
Vol 176 ◽  
pp. 09010
Author(s):  
L. Thobois ◽  
J. Freedman ◽  
P. Royer ◽  
J. Brotzge ◽  
E. Joseph
Keyword(s):  
Boundary Layer ◽  
New York ◽  
Wind Profile ◽  
Numerical Models ◽  
New York State ◽  
Data Availability ◽  
Extreme Weather Events ◽  
Cloud Base ◽  
York State ◽  
Severe Thunderstorms

The number and quality of atmospheric observations used by meteorologists and operational forecasters are increasing year after year, and yet, consistent improvements in forecast skill remains a challenge. While contributing factors involving these challenges have been identified, including the difficulty in accurately establishing initial conditions, improving the observations at regional and local scales is necessary for accurate depiction of the atmospheric boundary layer (below 2km), particularly the wind profile, in high resolution numerical models. Above the uncertainty of weather forecasts, the goal is also to improve the detection of severe and extreme weather events (severe thunderstorms, tornadoes and other mesoscale phenomena) that can adversely affect life, property and commerce, primarily in densely populated urban centers. This paper will describe the New York State Mesonet that is being deployed in the state of New York, USA. It is composed of 126 stations including 17 profiler sites. These sites will acquire continuous upper air observations through the combination of WINDCUBE Lidars and microwave radiometers. These stations will provide temperature, relative humidity & “3D” wind profile measurements through and above the planetary boundary layer (PBL) and will retrieve derived atmospheric quantities such as the PBL height, cloud base, momentum fluxes, and aerosol & cloud optical properties. The different modes and configurations that will be used for the Lidars are discussed. The performances in terms of data availability and wind accuracy and precision are evaluated. Several profiles with specific wind and aerosol features are presented to illustrate the benefits of the use of Coherent Doppler Lidars to monitor accurately the PBL.

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