Atmospheric circulation reconstructions over the Earth (ACRE) 2025: climate data recovery [meeting report]
Reconstructions de la circulation atmosphérique sur Terre (ACRE) 2025 : récupération des données climatiques [compte-rendu de réunion]
Williamson, Fiona
On 15-16 September 2025, Singapore Management University hosted the annual Atmospheric Circulation Reconstructions over the Earth (ACRE, <a href="https://www.met-acre.net/">www.met-acre.net/</a>) workshop, 'ACRE 2025: Climate Data Recovery', chaired by Fiona Williamson, Rob Allan and Praveen Teleti. The 2-day event took place at the College of Integrative Studies and saw around 30 participants from multi-disciplinary backgrounds all working in meteorological data rescue (DaRe, <a href="https://community.wmo.int/en/data-rescue-projects-and-initiatives-dare">www.community.wmo.int/en/data-rescue-projects-and-initiatives-dare</a>) sharing their latest work and discoveries. Speakers were a mix of climate scientists and historians, archivists and historical climatologists from across the globe. ACRE has been operating for 18?years under Professor Rob Allan, formerly of the UK Meteorological Office Hadley Centre. Over these two decades, ACRE has evolved as a leader in the data rescue space, facilitating the recovery of millions of data points for historic weather for global data repositories, including the International Surface Pressure Database (ISPD, <a href="https://reanalyses.org/observations/international-surface-pressure-databank">www.reanalyses.org/observations/international-surface-pressure-databank</a>), the Twentieth-Century Reanalysis (<a href="https://psl.noaa.gov/data/20thC_Rean/">www.psl.noaa.gov/data/20thC_Rean/</a>) and ERA-CLIM (<a href="https://www.ecmwf.int/en/research/projects/era-clim">www.ecmwf.int/en/research/projects/era-clim</a>).</p><p style="text-align: justify;">The workshop began with a keynote by <i>Rob Allan</i>, who gave an update on current projects and partners under the ACRE umbrella. He stressed the importance of continuing data rescue efforts, open discussion and bringing together disparate projects from across the globe.</p>
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