Full Metadata

The Orinoco low-level jet WRF simulation

• Identification_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:The Pennsylvania State University

Publication_Date:2017

Title:

The Orinoco low-level jet WRF simulation

Other_Citation_Details:

Giovanni Jiménez-Sánchez Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, Pennsylvania Fuerza Aérea Colombiana, Bogotá, D.C., Colombia Paul M. Markowski, Valerian Jewtoukoff, George S. Young, and David J. Stensrud Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, Pennsylvania

Online_Linkage: http://www.datacommons.psu.edu/

Description:

Abstract:

The structure and evolution of the low-level jet over the Orinoco River basin is characterized using finer horizontal, vertical, and temporal resolution than possible in previous studies via dynamical downscaling. The investigation relies on a 5-month-long simulation (November 2013¬–March 2014) performed with the Weather Research and Forecasting model, with initial and boundary conditions provided by the Global Forecast System analysis.  Dynamical downscaling is demonstrated to be an effective method to better resolve the horizontal and vertical characteristics of the Orinoco low-level jet (OLLJ), not only improving the representation of small-scale jet streaks within the broader region of low-level wind enhancement, but also its diurnal and austral-summer evolution.
The OLLJ is found to be a single stream tube over Colombia and Venezuela with wind speeds greater than 8 m s-1, and four distinctive cores varying in height under the influence of sloping terrain. The OLLJ has its maximum monthly mean wind speed (13 m s-1) and largest spatial extent (2100 km  400 km) in January. The maximum mean wind speeds (13–17 m s-1) in the diurnal cycle occur in the early morning, whereas wind speeds are a minimum (8–9 m s-1) in the late afternoon when a deep, convective boundary layer is present. The intraseasonal variability of the wind speed and potential temperature only presents significant periodicity in the diurnal and semidiurnal scales, with no other meaningful cycles evident during the austral summer.    

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:2017

Currentness_Reference:

publication date

Keywords:

Theme:

Theme_Keyword_Thesaurus:ISO 19115 Topic Categories

Theme_Keyword:Orinoco

Theme_Keyword:low-level jet

Theme_Keyword:WRF-ARW

Theme_Keyword:dynamical downscaling

Theme_Keyword:climatologyMeteorologyAtmosphere

Place:

Place_Keyword:South America

Place_Keyword:Colombia

Place_Keyword:Venezuela

Place_Keyword:Llanos

Access_Constraints:None.

Use_Constraints:

The University excludes any and all implied warranties, including warranties or merchantability and fitness for a particular purpose.
The University makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance.
The University will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
The USER is granted permission to translate and add value to the FILES for the use of the FILES on its computer hardware; provided, however, that the USER annually notify the University of any customizing or value-adding work done.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person:Giovanni Jimenez-Sanchez

Contact_Organization:Penn State

Contact_Position:Dept of Meteorology and Atmospheric Science

Contact_Address:

Address_Type:mailing address

Address:

503 Walker Building

City:University Park

State_or_Province:Pennsylvania

Postal_Code:16802

Country:USA

Contact_Electronic_Mail_Address:jgj118@psu.edu

Contact_Electronic_Mail_Address:giovannijimenez2002@gmail.com

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Organization:Penn State Data Commons

Contact_Address:

Address_Type:mailing and physical address

Address:

115 Land and Water Building

City:University Park

State_or_Province:Pennsylvania

Postal_Code:16802

Country:United States

Contact_Voice_Telephone:(814) 865 - 8792

Contact_Electronic_Mail_Address:datacommons@psu.edu

Distribution_Liability:

The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.

Metadata_Reference_Information:

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Penn State Data Commons

Contact_Position:Metadata Coordinator

Contact_Address:

Address_Type:mailing address

Address:

115 Land and Water Building

City:University Park

State_or_Province:Pennsylvania

Postal_Code:16802

Country:United States

Contact_Voice_Telephone:814-865-8792

Contact_Electronic_Mail_Address:datacommons@psu.edu

Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version:FGDC-STD-001-1998

Metadata_Time_Convention:local time