Identification

Title

regClimateChem: An R Package for Data Driven Variable Selection Applied to Atmospheric Carbon Monoxide

Abstract

Carbon monoxide (CO) is a major pollutant, impacting air quality and contributing to the greenhouse effect. Buchholz et al. [1] used a multiple linear regression model to link CO anomalies in the atmosphere to variability in the climate. Measurements of total column CO were retrieved from the Measurements Of Pollution In The Troposphere (MOPITT) instrument onboard the Terra satellite. Anomalies generated by these measurements are used as the response variable in this model. Climate mode indices represent regional variability in the climate, and these indices at various time lags are used as the predictor variables. Buchholz et al. [1] performed this analysis in MATLAB using serial algorithms in non-functionalized scripts. Simonson et al. [2] refactored the MATLAB codebase, improving both code interpretability and generality and adding parallelization options. In this technical note, we present further updates to the codebase used in the atmospheric CO analysis from Buchholz et al. [1]. These updates stem from four primary objectives. First, transfer the codebase into an R package that is available to researchers without a MATLAB license. Second, allow for a single climate index to appear in the model multiple times with different lag values. Third, implement an exhaustive variable selection algorithm. Finally, improve upon the non-exhaustive variable selection algorithm implemented in the MATLAB code. These updates are discussed, and the accuracy and timing of the new variable selection algorithms are compared.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d74x5c1k

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 > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > BIOMASS BURNING

EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > STATISTICAL APPLICATIONS

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON MONOXIDE

EARTH SCIENCE > ATMOSPHERE > AIR QUALITY > CARBON MONOXIDE

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

2020-05-15T00:00:00Z

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

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

2023-08-18T18:06:38.822632

Metadata language

eng; USA