Identification

Title

The NCAR In Situ Turbulence Detection Algorithm

Abstract

Historically, there has been one main source for routine turbulence observations for the aviation community, namely pilot reports. Although useful for tactical turbulence avoidance, there have been problems using them for turbulence forecasting and verification due to poor spatial and temporal accuracy, sporadic reporting, and the subjective nature of the reported turbulence intensity. To address these difficulties, NCAR, under sponsorship from the FAA Aviation Weather Research Program, has developed an in situ turbulence reporting system which has now been implemented on several major U.S. commercial air carriers composed of numerous aircraft types. These reports are routine, completely automated, are aircraft independent, have high temporal and spatial accuracy, and are therefore ideal for operational purposes and turbulence case studies. The NCAR In Situ Turbulence Detection Algorithm is coded as a C library which is typically integrated into a suitable onboard computer. The algorithm estimates the cube root of the energy (or eddy) dissipation rate, referred to as EDR, an atmospheric turbulence intensity metric. Besides documenting the algorithm, this document also describes the integrated quality control algorithm, the event triggering logic, the algorithm performance using simulation studies, and steps needed for deployment.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7v69jrv

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > VERTICAL WIND VELOCITY/SPEED

EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > STATISTICAL APPLICATIONS

EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > DATA ANALYSIS

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > TURBULENCE

originating controlled vocabulary

title

U.S. National Aeronautics and Space Administration Global Change Master Directory

reference date

date type

revision

effective date

2021-09-17

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2019-06-01T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata date

2023-08-18T18:06:52.988617

Metadata language

eng; USA