Identification

Title

NCAR/NSF C-130 Chemistry Peroxides Data

Alternative title(s)

87.007

Abstract

The gas phase peroxide data reported herein were obtained using the method described in Lee et al., J. Atmos. Ocean. Tech., 1995, flown on board the NCAR C-130 platform during the RICO, Rain in Cumulus over the Ocean, experiment between December 3, 2004, and January 27, 2005, based out of Antigua. Hydrogen peroxide is symbolically represented by H2O2. Methylhydroperoxide is symbolically given by CH3OOH. The measurements are given as molecular mixing ratios; molecules of specific gas per molecules of whole air times 1,000,000,000,000. or ppt-v. The partial pressure of a specific gas can be calculated by: P(H2O2) = MixingRatio(pptv) * P(air) /1,000,000,000,000. The goal of RICO was a detailed understanding of rain formation in shallow "warm" cumulus clouds over the ocean. Objectives included following the number density distributions and chemical evolution of aerosol, cloud condensation nuclei, cloud droplets, and precipitation. Sulfur gas and partcile chemistry leading to sulfate was consider a key process and the measurements of peroxides are directly related to particulate sulfate formation. Updated on 2006/01/03 with revised data files: * correct lag time errors in CVI to air_sample changes in sample mode (and vice versa). * Remove H2O2 data during noted periods of inlet condensation; primarily during initial decent after 1st high altitude circle at 5km and 1/2 way through first lower altitude circle. * Corrected limit of detection of methylhydroperoxide (15 -> 30 ppt) and its estimated uncertainty

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/87.007

protocol: https

description: Dataset homepage

https://data.eol.ucar.edu/cgi-bin/codiac/fgr_form/id=87.007

protocol: https

description: Dataset order request form. Data files are made available via FTP.

function: order

Unique resource identifier

code

87.007

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

climatologyMeteorologyAtmosphere

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

Resource Type

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

NSF/NCAR C-130

Keyword set

keyword value

Chemistry

Aircraft

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HYDROGEN COMPOUNDS > HYDROPEROXY

originating controlled vocabulary

title

Global Change Master Directory (GCMD)

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-72.00000

East bounding longitude

-55.00000

North bounding latitude

21.00000

South bounding latitude

15.00000

Temporal reference

Temporal extent

Begin position

2004-12-03T00:00:00Z

End position

2005-01-27T23:59:59Z

Dataset reference date

date type

publication

effective date

2006-01-03T09:45:09Z

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

none

Limitations on public access

none

Responsible organisations

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

responsible party role

pointOfContact

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

responsible party role

pointOfContact

Metadata date

2024-02-07T22:45:24Z

Metadata language

eng; USA