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<front>
<journal-meta>
<journal-id journal-id-type="publisher">EGUsphere</journal-id>
<journal-title-group>
<journal-title>EGUsphere</journal-title>
<abbrev-journal-title abbrev-type="publisher">EGUsphere</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">EGUsphere</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub"></issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/egusphere-2025-455</article-id>
<title-group>
<article-title>A Novel Identification Method for Stratospheric Gravity Waves in Nadir Viewing Satellite Observations</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Berthelemy</surname>
<given-names>Peter G.</given-names>
<ext-link>https://orcid.org/0009-0000-7329-5354</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wright</surname>
<given-names>Corwin J.</given-names>
<ext-link>https://orcid.org/0000-0003-2496-953X</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hindley</surname>
<given-names>Neil P.</given-names>
<ext-link>https://orcid.org/0000-0003-4377-2038</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Noble</surname>
<given-names>Phoebe E.</given-names>
<ext-link>https://orcid.org/0000-0001-6499-4620</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hoffmann</surname>
<given-names>Lars</given-names>
<ext-link>https://orcid.org/0000-0003-3773-4377</ext-link>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Centre for Climate Adaptation and Environment Research, University of Bath, Bath, UK</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Jülich Supercomputing Center, Forschungszentrum Jülich, Jülich, Germany, Jülich, Germany</addr-line>
</aff>
<pub-date pub-type="epub">
<day>18</day>
<month>02</month>
<year>2025</year>
</pub-date>
<volume>2025</volume>
<fpage>1</fpage>
<lpage>22</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2025 Peter G. Berthelemy et al.</copyright-statement>
<copyright-year>2025</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2025/egusphere-2025-455/">This article is available from https://egusphere.copernicus.org/preprints/2025/egusphere-2025-455/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2025/egusphere-2025-455/egusphere-2025-455.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2025/egusphere-2025-455/egusphere-2025-455.pdf</self-uri>
<abstract>
<p>Atmospheric gravity waves (GWs) are an important mechanism for vertical transport of energy and momentum through the atmosphere. Their impacts are apparent at all scales including aviation, weather, and climate. Identifying stratospheric GWs from satellite observations is challenging due to instrument noise and effects of weather processes, but they can be observed from nadir sounders such as the AIRS instrument onboard Aqua. Here, a new method (hereafter &amp;lsquo;neighbourhood method&amp;rdquo;) to detect GW information is presented and applied to AIRS data. We describe the concept of the neighbourhood method and use it to investigate GW amplitudes, zonal pseudomomentum fluxes, and vertical wavelengths over 5 years of AIRS data. We compare these results to those calculated from GWs detected using another widely used method based on a defined amplitude cutoff. The neighbourhood method reveals GW patterns in seasonal means that are not visible when using the amplitude cutoff method. Time series analysis suggests that GWs have a larger impact than was previously analysed from the amplitude cutoff detection method. &amp;sim; 25 % of waves detected using the neighbourhood method have amplitudes lower than is visible using the amplitude cutoff method. Three regions are studied in greater depth: the Rocky Mountains, North Africa, and New Zealand/Tasmania. GWs detected using the neighbourhood method have realistic wave phase propagation angles, which are consistent with surface-levels winds from ERA5 climatological reanalyses. Using the neighbourhood method produces new statistics for regional and global GW studies, which compares favourably to the amplitude cutoff GW detection method.</p>
</abstract>
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<funding-group>
<award-group id="gs1">
<funding-source>UK Research and Innovation</funding-source>
<award-id>NE/V01837X/1</award-id>
<award-id>NE/W003201/1</award-id>
<award-id>NE/Z50399X/1</award-id>
<award-id>NE/X017842/1</award-id>
</award-group>
<award-group id="gs2">
<funding-source>Royal Society</funding-source>
<award-id>URF\R\221023</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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