Resolving Fine-Scale Surface Features on Polar Sea Ice: A First Assessment of UAS Photogrammetry Without Ground Control by Teng Li, Baogang Zhang, Xiao Cheng, Matthew J. Westoby, Zhenhong Li, Chi Ma, Fengming Hui, Mohammed Shokr, Yan Liu, Zhuoqi Chen, Mengxi Zhai, Xinqing Li

“…To test their feasibility in characterizing the properties and dynamics of fast ice, three flights were carried out in the 2016–2017 austral summer during the 33rd Chinese National Antarctic Expedition (CHINARE), focusing on the area of the Prydz Bay in East Antarctica. Three-dimensional models and orthomosaics from three sorties were constructed from a total of 205 photos using Agisoft PhotoScan software. …”
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Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat by K. E. Ashley, R. McKay, J. Etourneau, J. Etourneau, F. J. Jimenez-Espejo, F. J. Jimenez-Espejo, A. Condron, A. Albot, X. Crosta, C. Riesselman, C. Riesselman, O. Seki, G. Massé, N. R. Golledge, N. R. Golledge, E. Gasson, D. P. Lowry, D. P. Lowry, N. E. Barrand, K. Johnson, K. Johnson, N. Bertler, N. Bertler, C. Escutia, R. Dunbar, J. A. Bendle

“…We examine a Holocene sediment core off East Antarctica that records the Neoglacial transition, the last major baseline shift of Antarctic sea ice, and part of a late-Holocene global cooling trend. …”
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Geomorphology and shallow sub-sea-floor structures underneath the Ekström Ice Shelf, Antarctica by A. Oetting, A. Oetting, E. C. Smith, E. C. Smith, J. E. Arndt, J. E. Arndt, B. Dorschel, R. Drews, T. A. Ehlers, C. Gaedicke, C. Hofstede, J. P. Klages, G. Kuhn, A. Lambrecht, A. Läufer, C. Mayer, R. Tiedemann, R. Tiedemann, F. Wilhelms, F. Wilhelms, O. Eisen, O. Eisen

“…<p>The Ekström Ice Shelf is one of numerous small ice shelves that fringe the coastline of western Dronning Maud Land, East Antarctica. Reconstructions of past ice-sheet extent in this area are poorly constrained, due to a lack of geomorphological evidence. …”
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Comparing past accumulation rate reconstructions in East Antarctic ice cores using ¹⁰Be, water isotopes and CMIP5-PMIP3 models by A. Cauquoin, A. Landais, G. M. Raisbeck, J. Jouzel, L. Bazin, M. Kageyama, J.-Y. Peterschmitt, M. Werner, E. Bard, ASTER Team

“…Here, we use high-resolution beryllium-10 (¹⁰Be) as an alternative tool for inferring past accumulation rate for the EPICA Dome C ice core, in East Antarctica. We present a high-resolution ¹⁰Be record covering a full climatic cycle over the period 269 to 355 ka from Marine Isotope Stage (MIS) 9 to 10, including a period warmer than pre-industrial (MIS 9.3 optimum). …”
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Revised records of atmospheric trace gases CO₂, CH₄, N₂O, and <i>δ</i>¹³C-CO₂ over the last 2000 years from Law Dome, Antar... by M. Rubino, M. Rubino, D. M. Etheridge, D. P. Thornton, R. Howden, C. E. Allison, R. J. Francey, R. L. Langenfelds, L. P. Steele, C. M. Trudinger, D. A. Spencer, M. A. J. Curran, M. A. J. Curran, T. D. van Ommen, T. D. van Ommen, A. M. Smith

“…Here we present revised records, including new measurements, performed at the CSIRO Ice Core Extraction LABoratory (ICELAB) on air samples from ice obtained at the high-accumulation site of Law Dome (East Antarctica). We are motivated by the increasing use of the records by the scientific community and by recent data-handling developments at CSIRO ICELAB. …”
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Investigation of post-depositional processing of nitrate in East Antarctic snow: isotopic constraints on photolytic loss, re-oxidation, and source inputs by G. Shi, A. M. Buffen, M. G. Hastings, C. Li, H. Ma, Y. Li, B. Sun, C. An, S. Jiang

“…Snowpits along a traverse from coastal East Antarctica to the summit of the ice sheet (Dome Argus) are used to investigate the post-depositional processing of nitrate (NO₃^&minus;) in snow. …”
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CCN measurements at the Princess Elisabeth Antarctica research station during three austral summers by P. Herenz, P. Herenz, H. Wex, A. Mangold, Q. Laffineur, I. V. Gorodetskaya, I. V. Gorodetskaya, Z. L. Fleming, M. Panagi, F. Stratmann

“…<p>For three austral summer seasons (2013–2016, each from December to February) aerosol particles arriving at the Belgian Antarctic research station Princess Elisabeth (PE) in Dronning Maud Land in East Antarctica were characterized. This included number concentrations of total aerosol particles (<span class="inline-formula"><i>N</i>_CN</span>) and cloud condensation nuclei (<span class="inline-formula"><i>N</i>_CCN</span>), the particle number size distribution (PNSD), the aerosol particle hygroscopicity, and the influence of the air mass origin on <span class="inline-formula"><i>N</i>_CN</span> and <span class="inline-formula"><i>N</i>_CCN</span>. …”
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Stable water isotopes and accumulation rates in the Union Glacier region, Ellsworth Mountains, West Antarctica, over the last 35 years by K. Hoffmann, K. Hoffmann, F. Fernandoy, H. Meyer, E. R. Thomas, M. Aliaga, D. Tetzner, D. Tetzner, J. Freitag, T. Opel, T. Opel, J. Arigony-Neto, C. F. Göbel, R. Jaña, D. Rodríguez Oroz, R. Tuckwell, E. Ludlow, J. R. McConnell, C. Schneider

“…Hence, the UG region, although<span id="page882"/> located at the northern edge of the WAIS and relatively close to the AP, exhibits rather stable climate characteristics similar to those observed in East Antarctica.</p>…”
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Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) by Sainan Sun, Frank Pattyn, Erika G. Simon, Torsten Albrecht, Stephen Cornford, Reinhard Calov, Christophe Dumas, Fabien Gillet-Chaulet, Heiko Goelzer, Nicholas R. Golledge, Ralf Greve, Matthew J. Hoffman, Angelika Humbert, Elise Kazmierczak, Thomas Kleiner, Gunter R. Leguy, William H. Lipscomb, Daniel Martin, Mathieu Morlighem, Sophie Nowicki, David Pollard, Stephen Price, Aurélien Quiquet, Hélène Seroussi, Tanja Schlemm, Johannes Sutter, Roderik S. W. van de Wal, Ricarda Winkelmann, Tong Zhang

“…Mass loss rates are a strong function of the sliding/friction law, with plastic laws cause a further destabilization of the Aurora and Wilkes Subglacial Basins, East Antarctica. Improvements to marine ice-sheet models have greatly reduced variability between modelled ice-sheet responses to extreme ice-shelf loss, e.g. compared to the SeaRISE assessments.…”
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ANALYSIS OF OVERESTIMATION IN HISTORICAL ICE FLOW VELOCITY MAPS IN WESTERN PACIFIC OCEAN SECTOR, ANTARCTICA by S. Ge, S. Ge, Y. Cheng, Y. Cheng, R. Li, R. Li, H. Cui, H. Cui, Z. Yu, Z. Yu, T. Chang, T. Chang, S. Luo, S. Luo, Z. Li, Z. Li, G. Li, G. Li, A. Zhao, A. Zhao, X. Yuan, X. Yuan, Y. Li, Y. Li, M. Xia, M. Xia, X. Wang, X. Wang, G. Qiao, G. Qiao

“…A historical flow velocity of the Western Pacific Ocean sector region of East Antarctica from 1963 to 1989 was mapped and then corrected for its velocity overestimation. …”
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Deglacial and Holocene sea-ice and climate dynamics in the Bransfield Strait, northern Antarctic Peninsula by M.-E. Vorrath, J. Müller, J. Müller, J. Müller, P. Cárdenas, T. Opel, S. Mieruch, O. Esper, L. Lembke-Jene, J. Etourneau, J. Etourneau, A. Vieth-Hillebrand, N. Lahajnar, C. B. Lange, C. B. Lange, C. B. Lange, C. B. Lange, A. Leventer, D. Evangelinos, D. Evangelinos, C. Escutia, G. Mollenhauer, G. Mollenhauer

“…The associated decrease in sea-ice cover contrasts the trend of growing sea-ice extent in East Antarctica. To reveal the long-term sea-ice history at the northern Antarctic Peninsula (NAP) under changing climate conditions, we examined a marine sediment core from the eastern basin of the Bransfield Strait covering the last Deglacial and the Holocene. …”
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The SP19 chronology for the South Pole Ice Core – Part 1: volcanic matching and annual layer counting by D. A. Winski, D. A. Winski, T. J. Fudge, D. G. Ferris, E. C. Osterberg, J. M. Fegyveresi, J. Cole-Dai, Z. Thundercloud, T. S. Cox, K. J. Kreutz, K. J. Kreutz, N. Ortman, C. Buizert, J. Epifanio, E. J. Brook, R. Beaudette, J. Severinghaus, T. Sowers, E. J. Steig, E. C. Kahle, T. R. Jones, V. Morris, M. Aydin, M. R. Nicewonger, K. A. Casey, K. A. Casey, R. B. Alley, E. D. Waddington, N. A. Iverson, N. W. Dunbar, R. C. Bay, J. M. Souney, M. Sigl, J. R. McConnell

“…<p>The South Pole Ice Core (SPICEcore) was drilled in 2014–2016 to provide a detailed multi-proxy archive of paleoclimate conditions in East Antarctica during the Holocene and late Pleistocene. …”
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Assessing the robustness of Antarctic temperature reconstructions over the past 2 millennia using pseudoproxy and data assimilation experiments by F. Klein, N. J. Abram, N. J. Abram, M. A. J. Curran, M. A. J. Curran, H. Goosse, S. Goursaud, S. Goursaud, V. Masson-Delmotte, A. Moy, A. Moy, R. Neukom, A. Orsi, J. Sjolte, N. Steiger, B. Stenni, B. Stenni, M. Werner

“…This has several origins: (1) the number of high-resolution ice cores is small, in particular on the East Antarctic plateau and in some coastal areas in East Antarctica; (2) the short and spatially sparse instrumental records limit the calibration period for reconstructions and the assessment of the methodologies; (3) the link between isotope records from ice cores and local climate is usually complex and dependent on the spatial scales and timescales investigated. …”
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Dating of the GV7 East Antarctic ice core by high-resolution chemical records and focus on the accumulation rate variability in the last millennium by R. Nardin, M. Severi, M. Severi, A. Amore, S. Becagli, S. Becagli, F. Burgay, F. Burgay, L. Caiazzo, V. Ciardini, G. Dreossi, G. Dreossi, M. Frezzotti, S.-B. Hong, I. Khan, B. M. Narcisi, M. Proposito, C. Scarchilli, E. Selmo, A. Spolaor, A. Spolaor, B. Stenni, B. Stenni, R. Traversi, R. Traversi

“…In this work, we release the dating of the uppermost 197 m of the 250 m deep GV7(B) ice core (drill site, 70<span class="inline-formula">^∘</span>41<span class="inline-formula">^′</span> S, 158<span class="inline-formula">^∘</span>52<span class="inline-formula">^′</span> E; 1950 m a.s.l. in Oates Land, East Antarctica) with a sub-annual resolution. Chemical records of NO<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="8c72af1edd6d67ed562efcaf5163d22b"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-17-2073-2021-ie00001.svg" width="9pt" height="16pt" src="cp-17-2073-2021-ie00001.png"/></svg:svg></span></span>, MSA (methanesulfonic acid), non-sea-salt SO<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M6" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">4</mn><mrow><mn mathvariant="normal">2</mn><mo>-</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="13pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="4a53e7d1f00f4334c934356877052515"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-17-2073-2021-ie00002.svg" width="13pt" height="17pt" src="cp-17-2073-2021-ie00002.png"/></svg:svg></span></span> (nss<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">SO</mi><mn mathvariant="normal">4</mn><mrow><mn mathvariant="normal">2</mn><mo>-</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="29pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="70c2dca1cdebf0791ac6d03f5c421763"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-17-2073-2021-ie00003.svg" width="29pt" height="17pt" src="cp-17-2073-2021-ie00003.png"/></svg:svg></span></span>), sea-salt ions and water stable isotopes (<span class="inline-formula"><i>δ</i>¹⁸</span>O) were studied as candidates for dating due to their seasonal pattern. …”
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The Antarctic Ice Core Chronology 2023 (AICC2023) chronological framework and associated timescale for the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core... by M. Bouchet, A. Landais, A. Grisart, F. Parrenin, F. Prié, R. Jacob, E. Fourré, E. Capron, D. Raynaud, V. Y. Lipenkov, M.-F. Loutre, M.-F. Loutre, T. Extier, A. Svensson, E. Legrain, P. Martinerie, M. Leuenberger, W. Jiang, F. Ritterbusch, Z.-T. Lu, G.-M. Yang

“…<p>The EPICA (European Project for Ice Coring in Antarctica) Dome C (EDC) ice core drilling in East Antarctica reaches a depth of 3260 m. The reference EDC chronology, the AICC2012 (Antarctic Ice Core Chronology 2012), provides an age vs. depth relationship covering the last 800 kyr (thousands of years), with an absolute uncertainty rising up to 8000 years at the bottom of the ice core. …”
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Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020 by I. N. Otosaka, A. Shepherd, A. Shepherd, E. R. Ivins, N.-J. Schlegel, C. Amory, M. R. van den Broeke, M. Horwath, I. Joughin, M. D. King, G. Krinner, S. Nowicki, A. J. Payne, E. Rignot, T. Scambos, K. M. Simon, B. E. Smith, L. S. Sørensen, I. Velicogna, I. Velicogna, P. L. Whitehouse, G. A, C. Agosta, A. P. Ahlstrøm, A. Blazquez, W. Colgan, M. E. Engdahl, X. Fettweis, R. Forsberg, H. Gallée, A. Gardner, L. Gilbert, N. Gourmelen, A. Groh, B. C. Gunter, C. Harig, V. Helm, S. A. Khan, C. Kittel, H. Konrad, P. L. Langen, B. S. Lecavalier, C.-C. Liang, B. D. Loomis, M. McMillan, D. Melini, S. H. Mernild, R. Mottram, J. Mouginot, J. Nilsson, B. Noël, M. E. Pattle, W. R. Peltier, N. Pie, M. Roca, I. Sasgen, H. V. Save, K.-W. Seo, B. Scheuchl, E. J. O. Schrama, L. Schröder, S. B. Simonsen, T. Slater, G. Spada, T. C. Sutterley, B. D. Vishwakarma, J. M. van Wessem, D. Wiese, W. van der Wal, B. Wouters, B. Wouters

“…In Antarctica, ice losses continue to be dominated by mass loss from West Antarctica (<span class="inline-formula">82±9</span> Gt yr<span class="inline-formula">⁻¹</span>) and, to a lesser extent, from the Antarctic Peninsula (<span class="inline-formula">13±5</span> Gt yr<span class="inline-formula">⁻¹</span>). East Antarctica remains close to a state of balance, with a small gain of <span class="inline-formula">3±15</span> Gt yr<span class="inline-formula">⁻¹</span>, but is the most uncertain component of Antarctica's mass balance. …”
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Insights into the vulnerability of Antarctic glaciers from the ISMIP6 ice sheet model ensemble and associated uncertainty by H. Seroussi, V. Verjans, S. Nowicki, A. J. Payne, H. Goelzer, W. H. Lipscomb, A. Abe-Ouchi, C. Agosta, T. Albrecht, X. Asay-Davis, A. Barthel, R. Calov, R. Cullather, C. Dumas, B. K. Galton-Fenzi, B. K. Galton-Fenzi, B. K. Galton-Fenzi, R. Gladstone, N. R. Golledge, J. M. Gregory, J. M. Gregory, R. Greve, R. Greve, T. Hattermann, M. J. Hoffman, A. Humbert, A. Humbert, P. Huybrechts, N. C. Jourdain, T. Kleiner, E. Larour, G. R. Leguy, D. P. Lowry, C. M. Little, M. Morlighem, F. Pattyn, T. Pelle, S. F. Price, A. Quiquet, A. Quiquet, R. Reese, R. Reese, N.-J. Schlegel, N.-J. Schlegel, A. Shepherd, E. Simon, R. S. Smith, F. Straneo, S. Sun, L. D. Trusel, J. Van Breedam, P. Van Katwyk, R. S. W. van de Wal, R. S. W. van de Wal, R. Winkelmann, R. Winkelmann, C. Zhao, T. Zhang, T. Zwinger

“…We show that, in addition to Thwaites and Pine Island glaciers in West Antarctica, Totten and Moscow University glaciers in East Antarctica present comparable future dynamic mass loss and high sensitivity to ice shelf basal melt. …”
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Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability by A. D. Fraser, R. A. Massom, R. A. Massom, M. S. Handcock, P. Reid, P. Reid, K. I. Ohshima, M. N. Raphael, J. Cartwright, A. R. Klekociuk, A. R. Klekociuk, Z. Wang, R. Porter-Smith

“…Positive trends are seen in East Antarctica and in the Bellingshausen Sea, with this region claiming the largest positive trend of <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M6" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>+</mo><mn mathvariant="normal">1198</mn><mo>±</mo><mn mathvariant="normal">359</mn></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="64pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="82580160fd0734bcdcbcf8c7aa9c79ee"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-5061-2021-ie00003.svg" width="64pt" height="10pt" src="tc-15-5061-2021-ie00003.png"/></svg:svg></span></span> km<span class="inline-formula">²</span> yr<span class="inline-formula">⁻¹</span> (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M9" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>+</mo><mn mathvariant="normal">1.10</mn><mo>±</mo><mn mathvariant="normal">0.35</mn></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="64pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="b0635188d1aab802b0a92816c8f515e7"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-5061-2021-ie00004.svg" width="64pt" height="10pt" src="tc-15-5061-2021-ie00004.png"/></svg:svg></span></span> % yr<span class="inline-formula">⁻¹</span>). …”
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Long-term High Resolution Image Dataset of Antarctic Coastal Benthic Fauna by Simone Marini, Federico Bonofiglio, Lorenzo Paolo Corgnati, Andrea Bordone, Stefano Schiaparelli, Andrea Peirano

“…Measurement(s) Coastal Benthic Megafauna Technology Type(s) Autonomous Imaging Device Factor Type(s) None Sample Characteristic - Organism Sterechinus neumayeri • Odontaster • Trematomus • Polynoidae • Diplasterias • Ophiuridae • Ammothea • Neobuccinum eatoni • Staurocucumis • Flabegraviera mundata Sample Characteristic - Environment coastal sea water Sample Characteristic - Location East Antarctica…”
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Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica by V. H. L. Winton, A. Ming, N. Caillon, L. Hauge, A. E. Jones, J. Savarino, X. Yang, M. M. Frey

“…<p>The nitrogen stable isotopic composition in nitrate (<span class="inline-formula"><i>δ</i>¹⁵N</span>-<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="4c315b3ea451cf26923ad12993612b33"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-20-5861-2020-ie00001.svg" width="25pt" height="16pt" src="acp-20-5861-2020-ie00001.png"/></svg:svg></span></span>) measured in ice cores from low-snow-accumulation regions in East Antarctica has the potential to provide constraints on past ultraviolet (UV) radiation and thereby total column ozone (TCO) due to the sensitivity of nitrate (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M3" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a186e28964d6ae507e65dbc91f8b1f71"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-20-5861-2020-ie00002.svg" width="25pt" height="16pt" src="acp-20-5861-2020-ie00002.png"/></svg:svg></span></span>) photolysis to UV radiation. …”
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