Identification

Title

ICARUS Chamber Experiment: 2014 FIXCIT Study_20140107_ISOPRENE/Methyl nitrite_Hydroxyl radical_No Seed_Isoprene + OH "slow chemistry" (isomerization), dry, 40C, no seeds

Alternative title(s)

d789016

Abstract

Goals:; To make parts-per-billion-by-volume levels of HPALDs and associated compounds and observe their response in the suite of instrumentation. To photooxidize HPALDs and associated compounds and observe product species. Determination if HPALD (or associated compounds) contributes toward interference on OH instrument. Summary:; Overall, the experiment went well. Initial NO levels in the high NOx bag were ~500 pptv which we believe was a result of connecting the GTHOS instrument to the bag shortly before starting the experiment. The HPALD compounds were formed overnight by photolyzing CH3ONO in the presence of isoprene under low levels of UV light, at 40C. By 10AM HPALD levels were ~1.3 ppbv as observed by CF3O- CIMS, and isoprene had decayed by a factor of 2. After the initial rapid NO decrease to stationary level (~70 pptv), NO remained stable over the low light portion of the experiment. After instrumentation began sampling the reaction products, the low level UV lights were turned off, and then temperature was ramped down to 25C, and then back up to 40C over the period of an hour. Next, 20% of chamber UV lights were turned on for 45 minutes, and then 100% UV lights were illuminated for approximately 1.5 hours. When the high level of UV lights were turned on, the AMS detected particle nucleation, and NO3- CIMS observed increases in several ion signals. Organization: 2014 FIXCIT Study; Lab Affiliation: California Institute of Technology; Chamber: Seinfeld chambers Experiment Category: Gas phase chemical reaction; Oxidant: Hydroxyl radical; Reactants: ISOPRENE, Methyl nitrite; Reaction Type: Photooxidation; Relative Humidity: 5; Temperature: 40; Pressure: 750 Torr

Resource type

dataset

Resource locator

https://rda.ucar.edu/datasets/d789016/

protocol: https

applicationProfile: browser

name: Dataset Description

description: Related Link

function: information

https://rda.ucar.edu/datasets/d789016/dataaccess/

protocol: https

applicationProfile: browser

name: Data Access

description: Related Link

function: download

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

environment

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

LABORATORY > LABORATORY

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-06-10

Keyword set

keyword value

ICARUS > Integrated Chamber Atmospheric data Repository for Unified Science

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-06-16

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE GASES/TRACE SPECIES

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-05-23

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

2014-01-07

End position

2014-01-07

Dataset reference date

date type

publication

effective date

2021-10-12

Frequency of update

notPlanned

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

UCAR/NCAR - Research Data Archive

full postal address

National Center for Atmospheric Research

CISL/DECS

P.O. Box 3000

Boulder

80307

U.S.A.

telephone number

(303)-497-1825

facsimile number

303-497-1291

email address

dattore@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

NCAR Research Data Archive

full postal address

National Center for Atmospheric Research

CISL/DECS

P.O. Box 3000

Boulder

80307

U.S.A.

facsimile number

303-497-1291

email address

rdahelp@ucar.edu

web address

https://rda.ucar.edu/

name: NCAR Research Data Archive

description: The Research Data Archive (RDA), managed by the Data Engineering and Curation Section (DECS) of the Computational and Information Systems Laboratory (CISL) at NCAR, contains a large and diverse collection of meteorological and oceanographic observations, operational and reanalysis model outputs, and remote sensing datasets to support atmospheric and geosciences research, along with ancillary datasets, such as topography/bathymetry, vegetation, and land use.

function: downlaod

responsible party role

pointOfContact

Metadata date

2025-06-17T22:05:02Z

Metadata language