ALBERT

Description: The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface-to-bottom ocean biogeochemical bottle data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2022 is an update of the previous version, GLODAPv2.2021 (Lauvset et al., 2021). The major changes are as follows: data from 96 new cruises were added, data coverage was extended until 2021, and for the first time we performed secondary quality control on all sulphur hexafluoride (SF6) data. In addition, a number of changes were made to data included in GLODAPv2.2021. These changes affect specifically the SF6 data, which are now subjected to secondary quality control, and carbon data measured onboard the RV Knorr in the Indian Ocean in 1994–1995 which are now adjusted using CRM measurements made at the time. GLODAPv2.2022 includes measurements from almost 1.4 million water samples from the global oceans collected on 1085 cruises. The data for the now 13 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113, CCl4, and SF6) have undergone extensive quality control with a focus on systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but converted to World Ocean Circulation Experiment (WOCE) exchange format and (ii) as a merged data product with adjustments applied to minimize bias. For the present annual update, adjustments for the 96 new cruises were derived by comparing those data with the data from the 989 quality controlled cruises in the GLODAPv2.2021 data product using crossover analysis. SF6 data from all cruises were evaluated by comparison with CFC-12 data measured on the same cruises. For nutrients and ocean carbon dioxide (CO2) chemistry comparisons to estimates based on empirical algorithms provided additional context for adjustment decisions. The adjustments that we applied are intended to remove potential biases from errors related to measurement, calibration, and data handling practices without removing known or likely time trends or variations in the variables evaluated. The compiled and adjusted data product is believed to be consistent to better than 0.005 in salinity, 1 % in oxygen, 2 % in nitrate, 2 % in silicate, 2 % in phosphate, 4 μmol kg-1 in dissolved inorganic carbon, 4 μmol kg-1 in total alkalinity, 0.01–0.02 in pH (depending on region), and 5 % in the halogenated transient tracers. The other variables included in the compilation, such as isotopic tracers and discrete CO2 fugacity (fCO2), were not subjected to bias comparison or adjustments.

Description: Perturbations in stratospheric aerosol due to explosive volcanic eruptions are a primary contributor to natural climate variability. Observations of stratospheric aerosol are available for the past decades, and information from ice cores has been used to derive estimates of stratospheric sulfur injections and aerosol optical depth over the Holocene (approximately 10 000 BP to present) and into the last glacial period, extending back to 60 000 BP. Tephra records of past volcanism, compared to ice cores, are less complete but extend much further into the past. To support model studies of the potential impacts of explosive volcanism on climate variability across timescales, we present here an ensemble reconstruction of volcanic stratospheric sulfur injection (VSSI) over the last 140 000 years that is based primarily on terrestrial and marine tephra records. VSSI values are computed as a simple function of eruption magnitude based on VSSI estimates from ice cores and satellite observations for identified eruptions. To correct for the incompleteness of the tephra record, we include stochastically generated synthetic eruptions assuming a constant background eruption frequency from the ice core Holocene record. While the reconstruction often differs from ice core estimates for specific eruptions due to uncertainties in the data used and reconstruction method, it shows good agreement with an ice-core-based VSSI reconstruction in terms of millennial-scale cumulative VSSI variations over the Holocene. The PalVol reconstruction provides a new basis to test the contributions of forced vs. unforced natural variability to the spectrum of climate and the mechanisms leading to abrupt transitions in the palaeoclimate record with low- to high-complexity climate models. The PalVol volcanic forcing reconstruction is available at https://doi.org/10.26050/WDCC/PalVolv1 (Toohey and Schindlbeck-Belo, 2023).

Description: Marine Ökosysteme wie Mangrovenwälder, Seegraswiesen, Salzwiesen und Makroalgen sowie marine Sedimente verfügen über die Eigenschaft, Kohlenstoff in ihrer Biomasse und Sedimenten zu speichern. Durch die Rehabilitation, Wiederherstellung und den Schutz dieser Ökosysteme kann somit das Potential des Ozeans zur Aufnahme von atmosphärischem CO2 erhöht werden. Dieses Potential wurde in Vorbereitung der 15. UN-Klimakonferenz in Kopenhagen 2009 unter dem Konzept „Blue Carbon" eingeführt und wird seitdem weiter erforscht und in politischen Prozessen weiterentwickelt. Die langfristige Sequestrierung von atmosphärischem CO2 durch Blue-Carbon-Ökosysteme unterstützt Umsetzungsprozesse zur Erreichung der Ziele des Pariser Abkommens. Das über Blue-Carbon-Ökosysteme sequestrierte CO2 zählt als Teil der globalen Kohlenstoffsenke als „negative Emissionen". So erreichte negative Emissionen sollten jedoch nicht zur Umgehung von ohnehin notwendigen politischen und wirtschaftlichen Schritten in Richtung einer CO2-neutralen Zukunft führen. Die Wiederherstellung und Rehabilitation von Blue-Carbon-Ökosystemen zur Erhöhung der natürlichen Kohlenstoffsenke des Planeten sollte zusätzlich zu einer signifikanten globalen Emissionsreduktion eingesetzt werden. Diese Studie erörtert die wissenschaftlichen, ökonomischen und politischen Fortschritte im Bereich Blue Carbon und stellt mögliche politische Handlungspfade vor, die das Potential von Blue-Carbon-Ökosystemen zum Klimaschutz in, durch und mit Deutschland stärken. Für die verschiedenen Blue-Carbon-Ökosysteme wird aufgezeigt, inwiefern die Ausweitung und der Schutz dieser Ökosystemen weitere Ziele der Klimaanpassung und der nachhaltigen Entwicklung unterstützen. Aufbauend auf einer Auswertung praktischer Umsetzungsbeispiele von Blue-Carbon-Projekten und möglicher Finanzierungsmechanismen wird nachfolgend ein politischer Handlungsleitpfaden für Deutschland in Bezug auf Blue Carbon entwickelt. Die politischen Handlungsempfehlungen wurden gemeinsam mit dem Bundesministerium für Umwelt, Naturschutz und Nukleare Sicherheit entwickelt.

Description: Marine ecosystems like mangroves forests, seagrass meadows, salt marshes and macroalgae can store carbon in their biomass and sediments. Rehabilitation, restoration and conservation of these ecosystems can increase the potential for atmospheric carbon uptake by the ocean. This concept was first introduced as ‘blue carbon’ during the preparation for the 15th UN Climate Change Conference in Copenhagen in 2009 and since then it has seen continuous incorporation into politics and research. The long-term sequestration of atmospheric CO2 via blue carbon ecosystems supports the 1.5°C goal of the Paris Agreement. The CO2 that is sequestered by blue carbon ecosystems is part of the global carbon sink and therefore it can be counted as ‘negative emissions’ in the global carbon stocktake. However, such negative emissions should not be implemented as a substitute for necessary political and economic measures towards a carbon neutral future. Rehabilitation and restoration of blue carbon ecosystems as a natural carbon sink is one of many measures but cannot replace the significant reduction of global emissions needed for the realisation of the global climate targets. This study discusses the scientific, economic and political realm of blue carbon. Furthermore, possible courses for political action “in”, “by”, and “through” Germany that could strengthen the potential of blue carbon ecosystems to sequester carbon are explored. The study investigates a variety of blue carbon ecosystems to determine to what extent the expansion and conservation of blue carbon ecosystems can support additional climate adaptation targets and Sustainable Development Goals. The evaluation of a multitude of implemented and ongoing blue carbon projects across the globe gives insight to best practices and possible financing mechanisms. A political guideline for Germany regarding blue carbon was developed together with the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.

Description: Die Bundesregierung hat den Kohleausstieg bis zum Jahr 2038 beschlossen und beschleunigt so die Transformation in den Kohleregionen. Die Ausgangslagen für den Wandel in den Revieren und umliegende Gemeinden der Lausitz und des Rheinlands sind dabei sehr unterschiedlich. In beiden Regionen stehen Politik, Zivilgesellschaft, Wirtschaft und Wissenschaft vor der Aufgabe, Lösungspfade und Transformationskorridore zu finden, die ökologisch verantwortlich, sozial gerecht, wirtschaftlich vielversprechend und demokratisch getragen sind. Das IASS Potsdam veranstaltete im Frühjahr 2020 gemeinsam mit dem Kulturwissenschaftlichen Institut Essen einen Workshop, um demokratiepolitische Gemeinsamkeiten und Unterschiede im Strukturwandel der Braunkohleregionen herauszuarbeiten. Die Zwischenergebnisse werden in dieser Studie dargestellt.

Description: This IASS study takes an in-depth look at Covid-19's impacts on the global energy sector, and then zooms in to the country level to see individual country effects and responses. The case studies are compiled by energy researchers in Argentina, China, Germany, India, Israel, and the United States.

Description: People living or working in the Arctic are faced with uncertainty regarding future social, political, economic, and environmental change. This uncertainty is due not least to the ongoing transformations caused by climate change. This paper presents results from a project entitled “Yamal 2040: Scenarios for the Russian Arctic”, which employed ‘Strategic Foresight’, a specific co-design and engagement methodology, to support stakeholders of one particular region in the Arctic, the Yamal-Nenets Autonomous Okrug (Yamal region) in Western Siberia, Russia. It was the project’s objective to respond to this situation of general uncertainty, to develop forward-looking scenarios to better understand the risks and opportunities associated with future transformations in the Arctic. The findings presented here may be of interest for stakeholders in other parts of the Arctic and Russia that depend on the exploitation of fossil fuels and/or are facing complex and uncertain situations.

Description: Este documento sirve de pauta orientativa para quienes deseen colaborar con las Organizaciones Regionales de Ordenación Pesquera (OROP) y explica cómo lograr medidas de conservación en una OROP, mediante el establecimiento de decisiones jurídicamente vinculantes. Se trata de una destilación de experiencias personales que incluye éxitos, fracasos y reflexiones sobre algunos de los aspectos más arcanos o complejos de las OROP. El propósito de este documento es el imperativo del proyecto STRONG High Seas: explorar el fracturado régimen de gobernanza de los océanos y, más explícitamente, ofrecer orientación práctica para apoyar la implementación de la conservación espacial en alta mar. Por lo tanto, este trabajo se enmarca en el contexto de la obtención de medidas de conservación espacial, usando ejemplos de otros esfuerzos de conservación de la biodiversidad a la vez que ofrece orientación para lograr medidas vinculantes para cualquier asunto, en cualquier OROP.

Description: The challenges facing European regions undergoing structural transformations as they transition towards sustainable development pathways have attracted increasing interest in recent years. Straddling the border between Germany and Poland, Lusatia is experiencing considerable transformation pressure. Various domestic and European funding programmes, for example under the umbrella of the European Green Deal, are intended to cushion the impacts of the phase-out or reduction of coal-fired power generation. The recently adopted EU Just Transition Mechanism aims to support sustainable structural transformations and the broader goal of achieving climate neutrality by mitigating impacts on the workforce and contributing to the diversification of economies in the most affected areas. Funds made available through this mechanism should be deployed in consultation with regional stakeholders in Lusatia to complement national support measures. Further funding programmes are available targeting various policy areas and could be harnessed to strengthen integration throughout the region. Funding programmes that are centrally managed by the European Commission (i.e. not under shared management with national governments) are of particular interest in this context. Closer political and economic cooperation, coupled with a deeper exchange of experience, can accelerate regional integration and guide processes of structural transformation towards sustainable outcomes. However, there are some practical hurdles to overcome in border regions. The primary objectives in using available EU funding are to mitigate the social impacts of processes of structural transformation and to deliver a just transition at all levels. Measures funded through these programmes should be aligned with the sustainable development goals (SDGs) and contribute to the goal of achieving climate neutrality.

Description: Ce rapport a été préparé dans le cadre du projet STRONG High Seas, à partir d’une série d’enquêtes menées auprès des parties prenantes et de l’expérience tirée de divers ateliers organisés dans la région de l’Atlantique du Sud-Est, ainsi que d’études documentaires et d’avis d’experts. Le rapport a été revu par plusieurs experts dans le but de valider les résultats et de garantir la rigueur du contenu. Ce document s’inscrit dans une série de rapports couvrant les questions de gouvernance des océans en mettant l’accent sur les ZAJN du Pacifique du Sud-Est et de l’Atlantique du SudEst et s’appuie sur les rapports précédents publiés par le projet STRONG High Seas. Les autres rapports du projet portent sur le cadre juridique et institutionnel applicable aux ZAJN, l’état écologique et l’importance socio-économique des ZAJN dans les régions du projet, les options de gestion et les mesures de conservation de la biodiversité marine dans les ZAJN, et les considérations relatives à la gestion intégrée des océans. Ces rapports sont disponibles sur le site web du projet STRONG High Seas.

Description: This report – Study on the socio-economic importance of areas beyond national jurisdiction (ABNJ) in the Southeast Atlantic region – aims to analyse the socio-economic importance of the ABNJ adjacent to the countries within the Abidjan Convention Area in West, Central and Southern Africa. It characterizes the socio-economic interests in ABNJ, underpinned by the ecosystem services concept, and the actual and potential social and economic outcomes (costs and benefits) associated with the conservation and use (exploitation) of marine resources, both in qualitative, and to the extent possible in quantitative terms. In this study, the term “socio-economics” is taken in a broad context to include the social aspects related to human well-being, livelihoods, impacts on communities, equity, socio-political systems, as well as economic ones. The analysis is based on an extensive literature review of scientific publications, articles, analysis of available data, stakeholder knowledge and experience, as well as expert opinion gathered through targeted interviews. It provides a narrative and forward-looking assessment of the key activities. The information presented is intend-ed to support decision-makers, including government officials, the private sector and other stakeholders to make informed decisions about ABNJ and weigh environmental, social and eco-nomic objectives, in the context of a new internationally binding treaty for the conservation and sustainable use of marine biological diversity beyond national jurisdiction, the BBNJ agreement. This report is part of a series of reports covering issues of ocean governance with a focus on the Southeast Atlantic (and Southeast Pacific) published under the STRONG High Seas project – Strengthening Regional Ocean Governance for the High Seas (June 2017 – May 2022).