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  • 1
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    Airborne measurement of peroxy radicals using chemical amplification coupled with cavity ring-down spectroscopy: the PeRCEAS instrument (2020)
    Copernicus
    Details
    Publication Date: 2020-05-20
    Description: Hydroperoxyl (HO2) and organic peroxy (RO2) radicals have an unpaired spin and are highly reactive free radicals. Measurements of the sum of HO2 and RO2 provide unique information about the chemical processing in an air mass. This paper describes the experimental features and capabilities of the Peroxy Radical Chemical Enhancement and Absorption Spectrometer (PeRCEAS). This is an instrument designed to make measurements on aircraft from the boundary layer to the lower stratosphere. PeRCEAS combines the amplified conversion of peroxy radicals to nitrogen dioxide (NO2) with the sensitive detection of NO2 using cavity ring-down spectroscopy (CRDS) at 408 nm. PeRCEAS is a dual-channel instrument, with two identical reactor–detector lines working out of phase with one another at a constant and defined pressure lower than ambient at the aircraft altitude. The suitability of PeRCEAS for airborne measurements in the free troposphere was evaluated by extensive characterisation and calibration under atmospherically representative conditions in the laboratory. The use of alternating modes of the two instrumental channels successfully captures short-term variations in the sum of peroxy radicals, defined as RO2∗ (RO2∗=HO2+∑RO2+OH+∑RO, with R being an organic chain) in ambient air. For a 60 s measurement, the RO2∗ detection limit is
    Print ISSN: 1867-1381
    Electronic ISSN: 1867-8548
    Topics: Geosciences
    Published by Copernicus on behalf of European Geosciences Union.
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    PAPER CURRENT
  • 2
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220312a (RF02) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220312a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF02; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 30121 data points
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    DATA PANGAEA
  • 3
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220313a (RF03) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220313a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF03; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 31699 data points
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    DATA PANGAEA
  • 4
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220315a (RF05) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220315a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF05; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 31310 data points
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    DATA PANGAEA
  • 5
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220314a (RF04) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220314a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF04; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 30814 data points
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    DATA PANGAEA
  • 6
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220316a (RF06) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220316a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF06; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 34142 data points
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    DATA PANGAEA
  • 7
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220328a (RF09) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220328a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF09; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 26965 data points
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    DATA PANGAEA
  • 8
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220320a (RF07) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220320a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF07; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 32897 data points
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    DATA PANGAEA
  • 9
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220321a (RF08) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220321a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF08; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 28013 data points
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    DATA PANGAEA
  • 10
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    Master tracks in 1 Hz temporal resolution from the HALO research aircraft flight HALO_220408a (RF15) (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-07
    Description: During the HALO-(AC)³ campaign in March-April 2022 airborne observations were performed with the High Altitude and LOng range research aircraft (HALO) covering the Fram Strait and north polar regions. The flight tracks covered open ocean areas, the marginal sea ice zone, and closed sea ice cover. Furthermore, cloud conditions were observed during air mass transformation events as marine cold air outbreaks and warm air intrusions. This data set summarizes the flight tracks of HALO and provides longitude, latitude, and altitude defined as position above WGS84. All data are measured by the Basic HALO Measurement and Data System (BAHAMAS) and resampled to 1 Hz temporal resolution.
    Keywords: AC; AC3; airborne; Aircraft; Arctic; Arctic Amplification; Atmospheric and Earth System Research with HALO – High Altitude and Long Range Research Aircraft; BAHAMAS; Basic HALO Measurement and Data System; DATE/TIME; Flight altitude; GPS; HALO; HALO_220408a; HALO_AC3; HALO-(AC)³; LATITUDE; LONGITUDE; RF15; SPP1294; track
    Type: Dataset
    Format: text/tab-separated-values, 26312 data points
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    DATA PANGAEA
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