It has been an emotional experience for me to resign from my post as fourth editor-in-chief of Indoor Air, in advance of the planned transfer of the journal to a new platform on January 1, 2023.

Indoor Air is an international and multidisciplinary research journal dedicated to indoor air sciences. Its inaugural issue was published in March 1991,^1-3 and the journal was soon backed by the International Society of Indoor Air Quality and Climate (ISIAQ), which was founded in 1992.⁴ The journal has since achieved great success. It has, arguably, become the most important platform for archiving and institutionalizing developments in indoor air science. Along with the Indoor Air and Healthy Building conference series, the journal has also helped to cultivate an indoor air science community.

Indoor Air has always been a community-based journal. As of January 1, 2023, Indoor Air will no longer be an official journal of ISIAQ.

I was recruited to the editorial board of Indoor Air in 2005 and was appointed associate editor in 2007 by the journal's second editor-in-chief, Jan Sundell. I took up the torch from our third editor-in-chief, Bill Nazaroff, in 2018. I am very grateful to Jan and Bill for their mentorship.

During my tenure as editor-in-chief of Indoor Air, we experienced an unprecedented global crisis: the COVID-19 pandemic caused by SARS-CoV-2. With the discovery that SARS-CoV-2 transmission occurs predominantly indoors, many articles published in Indoor Air found applications in the development of pandemic intervention policies at national and international levels. In August 2020, we published a virtual issue entitled “Indoor Transmission of Infection and Intervention,” which brought together the top 15 papers published in the journal according to their Altmetric Attention Scores. We made the issue accessible to all free of charge. Two keywords emerged from these papers, namely “ventilation” and “infection.” A special issue on COVID-19 and the indoor environment was published in June 2022, co-edited by Julian Tang and Dusan Licina. Our second COVID-19 special issue will appear in late 2022. I thank Julian and Dusan, and indeed all of our guest editors, for their dedication and hard work in editing these special issues.

To publish is to become known. Indoor Air has gained a high level of visibility both within and beyond the indoor air community. According to the Web of Science, as of August 5, 2022, Indoor Air had published 1952 articles since 1994 (1638 original articles, 95 review articles, and 219 other articles including editorials). These 1952 papers have been cited 66 100 times to date. The h-index of the journal is 113. In my editorship application in 2017, I vowed to “maintain ‘healthy journal growth” to help tackle “many unanswered challenges in indoor air sciences that are waiting to be discovered.” The annual number of articles published by the journal has nearly doubled in the last 4 years with 89 articles published in 2018, 115 in 2019, 145 in 2020, 169 in 2021, and 89 in 2022 to date. The impact factor of the journal increased from 4.396 in 2017 to 6.554 in 2021. The corresponding authors of the 270 original and review articles published in 2020 and 2021 hail from 36 countries and regions. ISIAQ's “three” main regions are well represented with 86 articles from the Americas (31.9%), 107 articles from Asia, Australia, and New Zealand (39.6%), and 77 articles from Europe and Africa (28.5%). This points to the diversity of the indoor air community.

In the last few months, I have realized that learned societies must learn from the history of society-based journals. I was recently introduced to a 1963 pamphlet by Dr Franck Morley entitled Self-Help for Learned Societies.⁵ With rapid social and economic changes since World War II, the relationship between learned societies and their publishers has changed.⁵ Prestigious academic journals are now likely to be marketed as commercial brands.⁶ Plan S, aimed at establishing full open access, was launched in 2018 to enable the science community (both researchers and research funders) to “regain ownership of the rules governing the dissemination of scientific information”.⁷ Experts have argued that learned societies hold the key to “realising an open access future”.⁸

I would like to say a big thank you to the Indoor Air community: to the journal's authors, reviewers, and readers and to our journal team, comprising associate editors, editorial board members, and publication staff. My special thanks go to Ms Lisbeth Bruun Cranfield, Senior Journals Publishing Manager at Wiley, for her professional support and guidance. She has been associated with Indoor Air since 1994 and has played an important role in its development.

Being part of a society-based journal has been a satisfying and instructive experience. Members of the Indoor Air community, many of whom are authors and reviewers for the journal, meet regularly at our biannual Indoor Air and Healthy Building conferences. This dynamic community is constantly drawing in new members from relevant disciplines. I sincerely thank the community for giving me the opportunity to serve, and I also thank our reviewers and authors in the community for their support and trust. Learning is a process of both deepening and broadening, and I have gained new knowledge and wisdom every day by reading the constructive comments of our volunteer reviewers and our authors' replies. As a scientist, I work within a narrow field, but as an editor, I am at the hub of the author-editor-reviewer network. As such, I have had the rare opportunity to learn from the collective wisdom of the community, both deepening my own research and broadening my knowledge outside my area of expertise. As editor-in-chief of Indoor Air, I have also had the chance to get to know many outstanding researchers in the field. This has been a highly rewarding experience. I have also benefited from the humbling experience of making mistakes, and I thank authors and reviewers alike for their patience and guidance.

Before I took up the editor-in-chief post, a friend of mine reminded me about editor bias, which can arise from gaps in an editor's knowledge and beliefs. The teamwork of our staff has done much to alleviate this problem for the journal. Jan first implemented the associate editor system in 2007, and Bill expanded the associate editor team. Our associate editors are top scholars in their research areas, and they bring their expertise to the journal. I am very grateful for their contributions during my tenure as editor-in-chief, and I would like to acknowledge them by name here: Joseph Allen, Gabriel Bekö, Wolfram Birmili, Geo Clausen, Richard Corsi, Orianne Dumas, Jennifer Peel, Patrick Lee, Glenn Morrison, Jordan Peccia, Tiina Reponen, Tunga Salthammer, Jenny Su, Michael Waring, Jim Zhang, and Yingxin Zhu.

One major initiative by me during my tenure was to invite major reviews on a pertinent topic every year by leading researchers. Three such reviews were published: Nazaroff and Weschler's “Indoor acids and bases”, 30 (4) (2020) 559–644; Nazaroff's “Residential air-change rates: A critical review”, 31(2) (2021) 282–313; and Salthammer and Morrison's “Temperature and indoor environments”, 32(5) (2022) e13022. I sincerely thank Bill Nazaroff, Charlie Weschler, Glenn Morrison, and Tunga Salthammer for their significant contributions.

It is not easy to bid farewell to a journal to which so many have contributed so much effort and time. The separation of Indoor Air from ISIAQ will be a loss to both ISIAQ and the journal itself. The inaugural editorial read as follows: “Welcome to the first issue of Indoor Air. The community of researchers involved in developing this idea now has a scientific journal devoted to the field”.⁹ We learned to regret that the journal is owned not by ISIAQ but by the publisher. As such, ISIAQ, a relatively small society, is at a disadvantage in negotiation over major challenges. A society journal serves its members and the scholarship of its community. Is the separation of Indoor Air from ISIAQ one of the “unintended consequences of Plan S”¹⁰? A learned society such as ISIAQ is well-positioned to develop its own open-access journal to serve its members¹¹ and to serve humankind in general. A society-based journal helps to foster a community, which in turn nurtures the journal.

I sincerely hope that Indoor Air will continue to serve the indoor air science community well and that ISIAQ will succeed in launching a new society-owned journal.

Let this be not a sad farewell but hello to a new beginning.

在计划于 2023 年 1 月 1 日将期刊转移到新平台之前辞去Indoor Air第四任主编的职务对我来说是一次激动人心的经历。

Indoor Air是一份致力于室内空气科学的国际性多学科研究期刊。它的创刊号于 1991 年 3 月^1-3出版，该期刊很快得到了成立于 1992 年的国际室内空气质量和气候协会 (ISIAQ) 的支持^。4该期刊自此取得了巨大的成功。可以说，它已成为室内空气科学发展存档和制度化的最重要平台。除了室内空气和健康建筑系列会议，该杂志还帮助培养了室内空气科学界。

Indoor Air一直是一份以社区为基础的期刊。自 2023 年 1 月 1 日起，Indoor Air将不再是 ISIAQ 的官方期刊。

我于 2005 年加入Indoor Air的编辑委员会，并于 2007 年被该杂志的第二任主编 Jan Sundell 任命为副主编。2018 年，我从我们的第三任主编 Bill Nazaroff 手中接过火炬。我非常感谢 Jan 和 Bill 的指导。

在我担任Indoor Air主编期间，我们经历了一场前所未有的全球危机：由 SARS-CoV-2 引起的 COVID-19 大流行。随着发现 SARS-CoV-2 传播主要发生在室内，许多文章发表在Indoor Air发现了在国家和国际层面制定大流行病干预政策方面的应用。2020 年 8 月，我们发布了一期题为“感染的室内传播和干预”的虚拟期刊，根据他们的 Altmetric 注意力得分汇集了该期刊发表的前 15 篇论文。我们让所有人都可以免费访问这个问题。这些论文中出现了两个关键词，即“通风”和“感染”。关于 COVID-19 和室内环境的特刊于 2022 年 6 月出版，由 Julian Tang 和 Dusan Licina 共同编辑。我们的第二期 COVID-19 特刊将于 2022 年底出版。感谢 Julian 和 Dusan，以及我们所有的客座编辑，感谢他们在编辑这些特刊时的奉献和辛勤工作。

发表就是要出名。室内空气在室内空气社区内外都获得了很高的知名度。根据 Web of Science，截至 2022 年 8 月 5 日，Indoor Air自 1994 年以来共发表了 1952 篇文章（1638 篇原创文章、95 篇评论文章和 219 篇其他文章，包括社论）。这些 1952 篇论文迄今已被引用 66100 次。的_该期刊的索引为 113。在我 2017 年的编辑申请中，我发誓要“保持期刊的‘健康发展’，以帮助解决‘室内空气科学中许多有待发现的未解之谜’。” 该杂志每年发表的文章数量在过去 4 年中几乎翻了一番，2018 年发表了 89 篇文章，2019 年发表了 115 篇，2020 年发表了 145 篇，2021 年发表了 169 篇，2022 年至今发表了 89 篇。该刊影响因子从2017年的4.396上升到2021年的6.554。2020年和2021年发表的270篇原创和综述文章的通讯作者来自36个国家和地区。ISIAQ“三大”主要区域代表性较好，美洲86篇（31.9%），亚洲、澳大利亚和新西兰107篇（39.6%），欧洲和非洲77篇（28.5%）。

在过去的几个月里，我意识到学术社会必须从社会期刊的历史中吸取教训。最近向我介绍了弗兰克·莫利 (Franck Morley) 博士 1963 年出版的一本小册子，题为“学术团体的自助”。⁵随着第二次世界大战以来社会和经济的快速变化，学术团体与其出版商之间的关系发生了变化。⁵著名学术期刊现在可能作为商业品牌进行营销。⁶旨在建立完全开放获取的 S 计划于 2018 年启动，旨在使科学界（包括研究人员和研究资助者）能够“重新掌握科学信息传播规则的所有权”。⁷专家们认为，博学的社会是“实现开放获取未来”的关键。^8个

我想非常感谢Indoor Air社区：感谢期刊的作者、审稿人和读者，以及我们的期刊团队，包括副编辑、编委会成员和出版人员。我要特别感谢 Wiley 高级期刊出版经理 Lisbeth Bruun Cranfield 女士的专业支持和指导。自 1994 年以来，她一直与Indoor Air有联系，并在其发展过程中发挥了重要作用。

成为一家以社会为基础的期刊的一部分是一种令人满意且具有启发性的经历。室内空气成员社区，其中许多人是该期刊的作者和审稿人，定期在我们一年两次的室内空气和健康建筑会议上开会。这个充满活力的社区不断吸引相关学科的新成员。衷心感谢社区给我服务的机会，也感谢社区的审稿人和作者对我们的支持和信任。学习是一个既深化又拓宽的过程，通过阅读志愿审稿人的建设性意见和作者的回复，我每天都在获得新的知识和智慧。作为一名科学家，我在一个狭窄的领域内工作，但作为一名编辑，我处于作者-编辑-审稿人网络的中心。因此，我有难得的机会学习社区的集体智慧，既加深了我自己的研究，又拓宽了我在专业领域之外的知识。作为主编室内空气方面，我也有机会结识了该领域的许多杰出研究人员。这是一次非常有益的经历。我也从犯错误的谦卑经历中受益，我感谢作者和审稿人的耐心和指导。

在我担任主编之前，我的一个朋友提醒我编辑偏见，这可能源于编辑知识和信念的差距。我们员工的团队合作为缓解该期刊的这一问题做出了很大贡献。Jan于2007年首次实施副主编制度，Bill扩大了副主编队伍。我们的副主编是各自研究领域的顶尖学者，他们将自己的专业知识带到期刊中。我非常感谢他们在我担任主编期间所做的贡献，我想在此点名致谢：Joseph Allen、Gabriel Bekö、Wolfram Birmili、Geo Clausen、Richard Corsi、Orianne Dumas、Jennifer Peel、Patrick Lee、Glenn Morrison、Jordan Peccia、Tiina Reponen、Tunga Salthammer、Jenny Su、Michael Waring、Jim Zhang 和 Yingxin Zhu。

我在任期间的一项主要举措是每年邀请主要研究人员对相关主题进行重要评论。发表了三篇此类评论：Nazaroff 和 Weschler 的“Indoor acids and bases”，30 (4) (2020) 559–644；Nazaroff 的“Residential air-change rates: A critical review”，31(2) (2021) 282-313；Salthammer 和 Morrison 的“温度和室内环境”，32(5) (2022) e13022。我衷心感谢 Bill Nazaroff、Charlie Weschler、Glenn Morrison 和 Tunga Salthammer 所做的重要贡献。

告别一份如此多的人付出了如此多的心血和时间的期刊并不容易。Indoor Air与 ISIAQ的分离对ISIAQ 和期刊本身都是一种损失。创刊社论如下：“欢迎阅读《室内空气》创刊号。参与开发这一想法的研究人员社区现在有一份专门针对该领域的科学期刊”。⁹我们学会了后悔，该期刊不是 ISIAQ 而是出版商所有。因此，ISIAQ 是一个相对较小的社会，在应对重大挑战的谈判中处于劣势。社会期刊为其成员和社区的学术服务。是分离室内空气来自 ISIAQ 的“S 计划的意外后果”之一¹⁰ ? 像 ISIAQ 这样的学术团体完全有能力开发自己的开放获取期刊，为其成员¹¹服务，并为全人类服务。以社会为基础的期刊有助于培养社区，而社区又会培育期刊。

我真诚地希望Indoor Air继续为室内空气科学界服务，并希望 ISIAQ 能够成功推出新的社会所有期刊。

让这不是悲伤的告别，而是迎接新的开始。