Identification

Title

ICARUS Chamber Experiment: 2014 FIXCIT Study_20140104_1-hydroxy-2-hydroperoxy ISOPOOH/hydrogen peroxide_Hydroxyl radical_No Seed_Blank H2O2 + hv (low-NO "near" bag) and ISOPOOH calibrations

Alternative title(s)

d789056

Abstract

<p>Goals:<br/> Control for chemistry related to chamber so as to tease out chamber artifacts. Secondary stuff: calibrate multiple CIMS for ISOPOOH, understand fragmentation of ISOPOOH in the PTR-MS, check ISOPOOH interference on TD-LIF, NO CL, GC-FID.</p> <p>Summary:<br/> NOTE that H2O2 + hv blank and ISOPOOH calibrations were carried out in separate bags, but individual instruments switched sampling between the bags </p> <p>Instruments mostly sampling empty chamber by 9:20 am. PTR-MS noted a large signal of acetone, which seemed to decay away to background at least by lunch time. H2O2 was added to the chamber. Before instruments were allowed to sample, the chamber volume seemed low. Additional air was added for ~20 minutes to start with a relatively full bag. Sampling in the dark with H2O2 proceeded as usual by 11:30 am. Dark sampling took longer than usual due to the instruments being taken off the bag to sample ISOPOOH standard bags. Lights on proceeded as usual. About three hours in, the chamber volume was checked. Volume seemed okay to run for another 2 hours. After the volume check, the temperature in the chamber was ramped up to a safe 33C to test temperature effects. Nitrate CIMS, TD-LIF reported increases in signals. Lights turned off, and after about 10 minutes, the temperature was ramped back down to 25C. </p> <p>Concurrently, ISOPOOH standards were shared. The first ISOPOOH standard bag (Bag 1) was a bit leaky, but made it to the CF3O- CIMS, then moved on and was depleted by NO3- CIMS. A second bag (Bag 2) was prepped which, again, went first to the CF3O- CIMS, and then moved on to the A-/I- CIMS. Bag 2 then headed to NO3- CIMS. A lunch break was taken, and the round-robin continued: GC-CIMS, PTR-MS (+ cold trapping tests), NO-C mmmm, L, TD-LIF, and finally GC-FID.</p> <p>Organization: 2014 FIXCIT Study<br/> Lab Affiliation: California Institute of Technology<br/> Chamber: Seinfeld chambers</p> <p>Experiment Category: Blank/Control<br/> Oxidant: Hydroxyl radical<br/> Reactants: 1-hydroxy-2-hydroperoxy ISOPOOH, hydrogen peroxide<br/> Reaction Type: Photooxidation<br/> Relative Humidity: 5<br/> Temperature: 24-33<br/> Pressure: 750</p>

Resource type

dataset

Resource locator

https://gdex.ucar.edu/datasets/d789056/

protocol: https

name: Dataset Description

description: Related Link

function: information

https://gdex.ucar.edu/datasets/d789056/dataaccess/

protocol: https

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

2021-03-30

Keyword set

keyword value

LABORATORY > LABORATORY

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-03

Keyword set

keyword value

ICARUS > Integrated Chamber Atmospheric data Repository for Unified Science

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-03

Keyword set

keyword value

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

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-03

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

2014-01-04

End position

2014-01-04

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

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

NSF NCAR Geoscience Data Exchange

email address

datahelp@ucar.edu

web address

https://gdex.ucar.edu

name: NSF NCAR Geoscience Data Exchange

description: The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research.

function: download

responsible party role

pointOfContact

Metadata date

2025-10-09T01:33:24Z

Metadata language