<?xml version='1.0' encoding='UTF-8'?><codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>Dataset on contrail occurrence inside cirrus clouds over Northern Midlatitudes and Southeast Asian Subtropics</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/KLYWG9</IDNo></titlStmt><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><distDate>2025-11-24</distDate></distStmt><verStmt source="DVN"><version date="2025-11-24" type="RELEASED">1</version></verStmt><biblCit>Petzold, Andreas, 2025, "Dataset on contrail occurrence inside cirrus clouds over Northern Midlatitudes and Southeast Asian Subtropics", https://doi.org/10.26165/JUELICH-DATA/KLYWG9, Jülich DATA, V1</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>Dataset on contrail occurrence inside cirrus clouds over Northern Midlatitudes and Southeast Asian Subtropics</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/KLYWG9</IDNo><IDNo agency="https://zenodo.org">17327847</IDNo></titlStmt><rspStmt><AuthEnty affiliation="Forschungszentrum Jülich">Petzold, Andreas</AuthEnty><othId role="Data Collector">Khan, Neelam F.</othId></rspStmt><prodStmt/><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><contact affiliation="Forschungszentrum Jülich" email="a.petzold@fz-juelich.de">Petzold, Andreas</contact></distStmt></citation><stdyInfo><subject><keyword>Earth and Environmental Sciences</keyword></subject><abstract>&lt;p>The dataset contains the analysis of contrail occurrence in cirrus clouds over Northern Midlatitudes and Southeast Asian Subtropics for the period 2014 to 2021.&lt;/p>&#xd;
&lt;p>The data refer to the figures published by Petzold et al. in Nature Communications, manuscript no. NCOMMS-25-28008A.&lt;/p></abstract><sumDscr/></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><setAvail/><useStmt/></dataAccs><othrStdyMat><relPubl><citation><titlStmt><IDNo agency="doi">10.5281/zenodo.17327847</IDNo></titlStmt><biblCit>Petzold, Andreas: Dataset on contrail occurrence inside cirrus clouds over Northern Midlatitudes and Southeast Asian Subtropics, Zenodo Dataset, 2025-10-11, https://doi.org/10.5281/zenodo.17327847</biblCit></citation><ExtLink URI="https://doi.org/10.5281/zenodo.17327847"/></relPubl></othrStdyMat></stdyDscr></codeBook>