<codeBook xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="ddi:codebook:2_5 http://www.ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" xmlns="ddi:codebook:2_5">
  <docDscr>
    <citation>
      <titlStmt>
        <titl xml:lang="sv">The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM)</titl>
        <parTitl xml:lang="en">The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM)</parTitl>
        <IDNo agency="SND">2024-180-1</IDNo>
        <IDNo agency="slu.se">SLU.ma.2025.4.2.IÄ-6</IDNo>
        <IDNo agency="DOI">https://doi.org/10.5878/z376-2m63</IDNo>
      </titlStmt>
      <prodStmt>
        <producer xml:lang="en" abbr="SND">Swedish National Data Service</producer>
        <producer xml:lang="sv" abbr="SND">Svensk nationell datatjänst</producer>
      </prodStmt>
      <holdings URI="https://doi.org/10.5878/z376-2m63">Landing page</holdings>
    </citation>
  </docDscr>
  <stdyDscr>
    <citation>
      <titlStmt>
        <titl xml:lang="sv">The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM)</titl>
        <parTitl xml:lang="en">The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM)</parTitl>
        <IDNo agency="SND">2024-180-1</IDNo>
        <IDNo agency="slu.se">SLU.ma.2025.4.2.IÄ-6</IDNo>
        <IDNo agency="DOI">https://doi.org/10.5878/z376-2m63</IDNo>
      </titlStmt>
      <rspStmt>
        <AuthEnty xml:lang="en" affiliation="Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences">Weldon, James</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för vatten och miljö, Sveriges lantbruksuniversitet">Weldon, James</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="NILU">Aas, Wenche</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="NILU">Aas, Wenche</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Chief Inspectorate of Environmental Protection (GIOŚ), Poland">Albiniak, Barbara</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Chief Inspectorate of Environmental Protection (GIOŚ), Poland">Albiniak, Barbara</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Vytautas Magnus University">Augustaitis, Algirdas</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Vytautas Magnus University">Augustaitis, Algirdas</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Nature Research Centre, State Scientific Research Institute, Lithuania">Baužienė, Ieva</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Nature Research Centre, State Scientific Research Institute, Lithuania">Baužienė, Ieva</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Applied Sciences and Arts of Southern Switzerland">Capelli, Camilla</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Applied Sciences and Arts of Southern Switzerland">Capelli, Camilla</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Norwegian Institute of Bioeconomy Research">Clarke, Nicholas</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Norsk institutt for bioøkonomi">Clarke, Nicholas</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University College Dublin">Cummins, Thomas</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University College Dublin">Cummins, Thomas</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Norwegian Institute for Water Research">de Wit, Heleen</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Norsk institutt for vannforskning">de Wit, Heleen</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Dirnböck, Thomas</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Dirnböck, Thomas</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Djukic, Ika</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Djukic, Ika</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences">Eklöf, Karin</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för vatten och miljö, Sveriges lantbruksuniversitet">Eklöf, Karin</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Finnish Environment Institute">Forsius, Martin</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Finlands miljöcentral">Forsius, Martin</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Swedish University of Agricultural Sciences">Futter, Martyn</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för vatten och miljö, Sveriges lantbruksuniversitet">Futter, Martyn</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences">Grandin, Ulf</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för vatten och miljö, Sveriges lantbruksuniversitet">Grandin, Ulf</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Institute of Global Climate and Ecology">Gromov, Sergey</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institute of Global Climate and Ecology">Gromov, Sergey</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Czech Hydrometeorological Institute">Holubová Šmejkalová, Adéla</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Czech Hydrometeorological Institute">Holubová Šmejkalová, Adéla</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Ibañez, Ricardo</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Ibañez, Ricardo</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Latvian Environment, Geology and Meteorology Centre">Indriksone, Iveta</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Latvian Environment, Geology and Meteorology Centre">Indriksone, Iveta</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="IVL - Swedish Environmental Research Institute">Jutterström, Sara</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="IVL Svenska Miljöinstitutet">Jutterström, Sara</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Kobler, Johannes</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Kobler, Johannes</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Ministry of Climate, Estonia">Koger, Heidi</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Ministry of Climate, Estonia">Koger, Heidi</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Bavarian Forest National Park">Kölbl, Angelika</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Bavarian Forest National Park">Kölbl, Angelika</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Adam Mickiewicz University in Poznań">Kostrzewski, Andrzej</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Adam Mickiewicz University in Poznań">Kostrzewski, Andrzej</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Institute of Global Climate and Ecology">Koukhta, Anna</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institute of Global Climate and Ecology">Koukhta, Anna</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Czech Geological Survey">Krám, Pavel</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Czech Geological Survey">Krám, Pavel</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Adam Mickiewicz University in Poznań">Kruszyk, Robert</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Adam Mickiewicz University in Poznań">Kruszyk, Robert</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Lasheras, Esther</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Lasheras, Esther</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Estonian Environmental Research Center">Lõhmus, Kairi</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Estonian Environmental Research Center">Lõhmus, Kairi</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Adam Mickiewicz University in Poznań">Majewski, Mikołaj</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Adam Mickiewicz University in Poznań">Majewski, Mikołaj</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences">Markensten, Hampus</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för vatten och miljö, Sveriges lantbruksuniversitet">Markensten, Hampus</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Miranda, Rafael</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Miranda, Rafael</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Mirtl, Michael</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Mirtl, Michael</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="IVL Swedish Environmental Research Institute">Moldan, Filip</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="IVL Svenska Miljöinstitutet">Moldan, Filip</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Forestry, Environmental and Agri-Food Units Command, Italy">Papitto, Giancarlo</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Forestry, Environmental and Agri-Food Units Command, Italy">Papitto, Giancarlo</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Peterseil, Johannes</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Peterseil, Johannes</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Vytautas Magnus University">Pivoras, Ainis</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Vytautas Magnus University">Pivoras, Ainis</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Pröll, Gisela</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Pröll, Gisela</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences">Rönnback, Pernilla</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för vatten och miljö, Sveriges lantbruksuniversitet">Rönnback, Pernilla</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Santamaría, Carolina</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Santamaría, Carolina</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Santamaría, Jesus Miguel</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Santamaría, Jesus Miguel</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="German Environment Agency">Plha, Thomas</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="German Environment Agency">Plha, Thomas</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Institute of Environmental Protection, Poland">Skotak, Krzysztof</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institute of Environmental Protection, Poland">Skotak, Krzysztof</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Elustondo, David</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Elustondo, David</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="University of Navarra">Valerio, Mercedes</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="University of Navarra">Valerio, Mercedes</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Environment Agency Austria">Venier, Sarah</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Environment Agency Austria">Venier, Sarah</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="National Institute for Public Health and the Environment">Vlaar, Lieke</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="National Institute for Public Health and the Environment">Vlaar, Lieke</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Finnish Environment Institute">Vuorenmaa, Jussi</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Finlands miljöcentral">Vuorenmaa, Jussi</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Johann Heinrich von Thünen Institute Federal Research Institute for Rural Areas, Forestry and Fisheries">Wellbrock, Nicole</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Johann Heinrich von Thünen Institute Federal Research Institute for Rural Areas, Forestry and Fisheries">Wellbrock, Nicole</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Natural Resources Institute Finland">Ukonmaanaho, Liisa</AuthEnty>
        <AuthEnty xml:lang="en" affiliation="Finnish Meteorological Institute">Makkonen, Ulla</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Meteorologiska Institutet">Makkonen, Ulla</AuthEnty>
      </rspStmt>
      <prodStmt />
      <distStmt>
        <distrbtr xml:lang="en" abbr="SND" URI="https://snd.se">Swedish National Data Service</distrbtr>
        <distrbtr xml:lang="sv" abbr="SND" URI="https://snd.se">Svensk nationell datatjänst</distrbtr>
        <distDate xml:lang="en" date="2026-03-19" />
      </distStmt>
      <verStmt>
        <version elementVersion="1" elementVersionDate="2026-03-19" />
      </verStmt>
      <holdings URI="https://doi.org/10.5878/z376-2m63">Landing page</holdings>
    </citation>
    <stdyInfo>
      <subject>
        <keyword xml:lang="en" vocab="GCMD" vocabURI="https://gcmd.nasa.gov/kms/concept/1baa552d-c563-43fb-b618-54651f8b07e6">SURFACE WATER CHEMISTRY</keyword>
        <keyword xml:lang="en" vocab="GCMD" vocabURI="https://gcmd.nasa.gov/kms/concept/8435030e-8d16-409f-a812-ace5d8ffc122">GROUNDWATER CHEMISTRY</keyword>
        <keyword xml:lang="en" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/14973">air quality monitoring</keyword>
        <keyword xml:lang="sv" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/14973">luftkvalitetsövervakning</keyword>
        <keyword xml:lang="en" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/3007">eutrophication</keyword>
        <keyword xml:lang="sv" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/3007">eutrofiering</keyword>
        <keyword xml:lang="en" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/44">acidification</keyword>
        <keyword xml:lang="sv" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/44">försurning</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21212">water runoff</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/10092">catchment</keyword>
        <keyword xml:lang="sv" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/10092">upptagningsområde</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/20954">leaf litter decomposition</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21929">understory vegetation</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/20137">V-notch weir</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21829">forest ecosystem</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/22025">above ground biomass</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21660">soil chemistry</keyword>
        <keyword xml:lang="sv" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21660">markkemi</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21263">atmospheric deposition</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/20115">vegetation survey</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/20366">lysimeter</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/10107">epiphyte</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21609">biogeochemistry</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21752">meteorology</keyword>
        <keyword xml:lang="sv" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21752">meteorologi</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21334">ecosystem monitoring</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21335">environmental monitoring</keyword>
        <keyword xml:lang="sv" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21335">miljöövervakning</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21336">long term ecological monitoring</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21277">nitrogen deposition</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21275">bulk deposition</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/21270">sulfate deposition</keyword>
        <keyword xml:lang="en" vocab="INSPIRE Spatial Data Themes" vocabURI="http://inspire.ec.europa.eu/theme/ef">Environmental monitoring facilities</keyword>
        <keyword xml:lang="sv" vocab="INSPIRE Spatial Data Themes" vocabURI="http://inspire.ec.europa.eu/theme/ef">Anläggningar för miljöövervakning</keyword>
        <keyword xml:lang="en" vocab="INSPIRE Spatial Data Themes" vocabURI="http://inspire.ec.europa.eu/theme/hb">Habitats and biotopes</keyword>
        <keyword xml:lang="sv" vocab="INSPIRE Spatial Data Themes" vocabURI="http://inspire.ec.europa.eu/theme/hb">Naturtyper och biotoper</keyword>
        <topcClas xml:lang="en" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota">Biota</topcClas>
        <topcClas xml:lang="sv" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota">Biologi och ekologi</topcClas>
        <topcClas xml:lang="en" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/climatologyMeteorologyAtmosphere">Climatology / Meteorology / Atmosphere</topcClas>
        <topcClas xml:lang="sv" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/climatologyMeteorologyAtmosphere">Klimatologi och meteorologi</topcClas>
        <topcClas xml:lang="en" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment">Environment</topcClas>
        <topcClas xml:lang="sv" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment">Miljö</topcClas>
      </subject>
      <abstract xml:lang="en" contentType="abstract">The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM) presents a comprehensive long-term dataset of ongoing integrated ecosystem monitoring from European forested catchments. The dataset encompasses measurements from monitoring stations across 14 European countries, with temporal coverage extending for most sites from the 1990s to 2020. The dataset will be updated with new data once per year. The integrated monitoring approach applies over multiple monitoring subprogrammes to simultaneously measure physical, chemical, and biological properties across ecosystem compartments including atmosphere, precipitation, throughfall, soil, soil water, groundwater, runoff water, vegetation, and biota. All measurements follow standardised protocols detailed in the ICP IM Manual, ensuring data quality and comparability across sites and time periods. The dataset supports research on ecosystem responses to air pollution, climate change impacts, and biogeochemical cycling. 

Data is provided by sub-programme (all sites and all years with data in one file), geographic co-ordinates for sites are available in a separate file. Historical data from inactive sites in Belarus, Denmark, Iceland and the United Kingdom are currently available by request, as is data from Finland in sub-programmes TF,SF,SC,SW,FC,LF,FD,VG,EP and BV, and data from Poland. The monitoring is done under the framework of the UN Convention on Long-Range Transboundary Air Pollution (CLRTAP) and also has an important role in reporting under the EU national emissions ceiling directive (NECD). Users are strongly encouraged to refer to the ICP IM Monitoring Manual which describes in detail the methods used to make measurements in the field and the laboratory, the data formats used, explanations of column headers and flags used in all subprogrammes and example files. This is provided alongside the data.</abstract>
      <abstract xml:lang="sv" contentType="abstract">The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM)  presenterar ett omfattande långtidsdataset från pågående integrerad ekosystemövervakning i europeiska skogsbevuxna avrinningsområden. Datasetet omfattar mätningar från övervakningsstationer i 14 europeiska länder, med tidsmässig täckning som sträcker sig från 1990-talet till 2020. Nya data kommer med en årlig uppdatering. Den integrerade övervakningsmetoden tillämpas över flera övervakningsprogram för att samtidigt mäta fysikaliska, kemiska och biologiska egenskaper i olika ekosystemkomponenter, inklusive atmosfär, nederbörd, krondropp, mark, markvatten, grundvatten, avrinningsvatten, vegetation och biota. Alla mätningar följer standardiserade protokoll som beskrivs i ICP IM-manualen, vilket säkerställer datakvalitet och jämförbarhet mellan platser och tidsperioder. Datasetet stöder forskning om ekosystemens respons på luftföroreningar, klimatförändringarnas effekter och biogeokemiska kretslopp. 

Data tillhandahålls per delprogram (alla platser och alla år med data i en fil) och koordinaterna finns i en separat fil. Historiska data från inaktiva områden i Vitryssland, Danmark, Island och Storbritannien finns för närvarande tillgängliga på begäran, liksom data från Finland i delprogrammen TF, SF, SC, SW, FC, LF, FD, VG, EP och BV och data från Polen. Övervakningen sker inom ramen för FN:s konvention om långväga gränsöverskridande luftföroreningar (CLRTAP) och har även en viktig roll i rapporteringen enligt EU:s direktiv för utsläpp av luftföroreningar (takdirektivet). Användare uppmanas att läsa ICP IM Monitoring Manual som i detalj beskriver de metoder som används för att göra mätningar i fält och laboratoriet, de dataformat som används, förklaringar av kolumnrubriker och flaggor som används i alla delprogram och exempelfiler. Denna manual finns tillgänglig tillsammans med databasen.</abstract>
      <sumDscr>
        <dataKind xml:lang="en">Numeric</dataKind>
      </sumDscr>
    </stdyInfo>
    <method>
      <dataColl />
    </method>
    <dataAccs>
      <useStmt>
        <restrctn xml:lang="en">Access to data through SND. Data are freely accessible.</restrctn>
        <restrctn xml:lang="sv">Åtkomst till data via SND. Data är fritt tillgängliga.</restrctn>
        <conditions elementVersion="info:eu-repo-Access-Terms vocabulary">openAccess</conditions>
      </useStmt>
    </dataAccs>
    <othrStdyMat />
  </stdyDscr>
</codeBook>