<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_996236</Entry_ID>
<Entry_Title>20 Hz upward and downward irradiance from the BACSAM II aircraft campaign with Polar 6</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Köhler, Laura; Jurányi, Zsófia</Dataset_Creator>
<Dataset_Title>20 Hz upward and downward irradiance from the BACSAM II aircraft campaign with Polar 6</Dataset_Title>
<Dataset_Release_Date>2026-07-29</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.996236</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Laura</First_Name>
<Last_Name>Köhler</Last_Name>
<Email>laura.koehler@awi.de</Email>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>Event label</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Date/Time of event</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>netCDF file</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>netCDF file (File Size)</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>airborne</Keyword>
<Keyword>Aircraft</Keyword>
<Keyword>Arctic</Keyword>
<Keyword>Atmosphere</Keyword>
<Keyword>irradiance</Keyword>
<Keyword>P6-247_BACSAM2_2024</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404070101</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404100201</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404110301</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404130401</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404130502</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404130603</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404150701</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404170801</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404230901</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404241001</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404251101</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404261201</Keyword>
<Keyword>P6-247_BACSAM2_2024_2404291301</Keyword>
<Keyword>Polar 6</Keyword>
<Sensor_Name>
<Long_Name>Pyranometer, Pyrgeometer</Long_Name>
</Sensor_Name>
<Source_Name>
<Long_Name>POLAR 6</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>2024-04-07</Start_Date>
<Stop_Date>2024-04-29</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>78.245931</Southernmost_Latitude>
<Northernmost_Latitude>81.596627</Northernmost_Latitude>
<Westernmost_Longitude>-16.663061</Westernmost_Longitude>
<Easternmost_Longitude>15.502002</Easternmost_Longitude>
</Spatial_Coverage>
<Project>
<Short_Name>AC3</Short_Name>
<Long_Name>Arctic Amplification</Long_Name>
</Project>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>13 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Köhler, Laura (2026): BACSAM II: Turbulence and aerosol in situ aircraft observations in the Arctic with Polar 6 and T-Bird (Version v1.0.0) [software]. GitHub, https://github.com/LauraKoehler/bacsam2_processing</Reference>
<Reference>Köhler, Laura (2026): polair [software]. Zenodo, https://doi.org/10.5281/ZENODO.21065057</Reference>
<Summary>The BACSAM II aircraft campaign, conducted with the polar research aircraft Polar 6 and the towed body T-Bird, took place from 3 April to 2 May 2024. It was based in Longyearbyen, Svalbard. In total, 11 low-level research flights and two transit flights were conducted, covering the region around Svalbard and north of Greenland.
The datasets present upward and downward shortwave and longwave irradiance measurements, together with the corresponding sensor temperatures and GPS position. One pyranometer and one pyrgeometer were installed on the top of Polar 6, with an additional pyranometer and pyrgeometer installed on the underside of the aircraft. For convenience, the dataset also provides pitch and roll angles. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.996236"!</Summary>
<Related_URL>
<URL>https://doi.org/10.17815/jlsrf-2-153</URL>
<Description>POLAR 6</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5065/D6H70CW6</URL>
<Description>netCDF file</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5065/D6H70CW6</URL>
<Description>netCDF file (File Size)</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5281/ZENODO.21065057</URL>
<Description>polair</Description>
</Related_URL>
<Related_URL>
<URL>https://gepris.dfg.de/project/268020496</URL>
<Description>AC3</Description>
</Related_URL>
<Related_URL>
<URL>https://github.com/LauraKoehler/bacsam2_processing</URL>
<Description>BACSAM II: Turbulence and aerosol in situ aircraft observations in the Arctic with Polar 6 and T-Bird (Version v1.0.0)</Description>
</Related_URL>
<Parent_DIF>PANGAEA_995979</Parent_DIF>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-07-29</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-07-29</Last_DIF_Revision_Date>
</DIF>
