<?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_995119</Entry_ID>
<Entry_Title>Meteorological and radiation measurements during the North Pole 28 (NP-28) drifting station, 1987 - Standardized fixed-hour short-wave actinometric observations</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Zachek, Andrey</Dataset_Creator>
<Dataset_Title>Meteorological and radiation measurements during the North Pole 28 (NP-28) drifting station, 1987 - Standardized fixed-hour short-wave actinometric observations</Dataset_Title>
<Dataset_Release_Date>2026-05-22</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.995119</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Andrey</First_Name>
<Last_Name>Zachek</Last_Name>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>DATE/TIME</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Local Time</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>LATITUDE</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>LONGITUDE</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Air temperature at 2 m height</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Direct radiation</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Short-wave downward (GLOBAL) radiation</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Diffuse radiation</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Short-wave upward (REFLEX) radiation</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Total cloud amount</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Low cloud amount</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>NorthPole_SP-28</Keyword>
<Sensor_Name>
<Long_Name>Thermometer, JSC "Termopribor", TM-4-1</Long_Name>
</Sensor_Name>
<Sensor_Name>
<Long_Name>Actinometer, Yanishevsky, AT-50</Long_Name>
</Sensor_Name>
<Sensor_Name>
<Long_Name>Pyranometer, Yanishevsky, M-80</Long_Name>
</Sensor_Name>
<Sensor_Name>
<Long_Name>Visual observation</Long_Name>
</Sensor_Name>
<Source_Name>
<Long_Name>Drifting Station SP-28</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>1987-03-01</Start_Date>
<Stop_Date>1987-09-30</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>81.06</Southernmost_Latitude>
<Northernmost_Latitude>85.3</Northernmost_Latitude>
<Westernmost_Longitude>148.54</Westernmost_Longitude>
<Easternmost_Longitude>170.0</Easternmost_Longitude>
</Spatial_Coverage>
<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>7808 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Zachek, Andrey; Yurganov, Leonid (2026): Longwave Radiation Variability in the Arctic: Forty Years of Change Under Reducing Global Anthropogenic SO2 Emissions. Atmosphere, 17(5), 513, https://doi.org/10.3390/atmos17050513</Reference>
<Reference>Zachek, Andrey (2026): Meteorological and radiation measurements during the North Pole 28 (NP-28) drifting station, 1987 - Standard meteorological measurements [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.995120</Reference>
<Summary>This dataset provides meteorological and actinometric observations from the Soviet drifting station North Pole 28 (NP-28) in the Central Arctic, 1987. Experimental studies were carried out at the drifting station, which operated in the Central Arctic Basin from February to October 1987. It includes air and surface temperatures, humidity, pressure, wind data, and cloud cover. The radiation data (see https://doi.pangaea.de/10.1594/PANGAEA.995120) covers hourly averages of long-wave (upward/downward) and short-wave global radiation, as well as fixed-hour solar radiation measurements (direct, diffuse, and reflected). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995119"!</Summary>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_6709</URL>
<Description>LATITUDE</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_6709</URL>
<Description>LONGITUDE</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_8601</URL>
<Description>DATE/TIME</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.3390/atmos17050513</URL>
<Description>Longwave Radiation Variability in the Arctic: Forty Years of Change Under Reducing Global Anthropogenic SO2 Emissions</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.pangaea.de/10.1594/PANGAEA.995120</URL>
<Description>Meteorological and radiation measurements during the North Pole 28 (NP-28) drifting station, 1987 - Standard meteorological measurements</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-05-22</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-05-22</Last_DIF_Revision_Date>
</DIF>
