bluuebunny/crossref_metadata_2025 huggingface dataset:
Episodic focus formulation in media scholars’ data interaction
Authors: Korkeamäki Laura , Keskustalo Heikki , Kumpulainen Sanna
Published: September 2024

Introduction. Focus formulation affects task information interaction and task performance. It has typically been conceptualised as one task stage in the overall task performance. Nevertheless, we take a different approach by studying focus formulation as an episodic phenomenon in the task process performance. Episodic focus formulation includes several focus formulation episodes during task performance processes that gradually lead to focus, but instead of considering the larger task, this happens during a subtask. The purpose of this study is to examine what is episodic focus formulation like in media scholars’ data interaction.
Method. We interviewed twenty-five media scholars about their research processes and related interactions with their research data.
Analysis. We examined focus formulation episodes as sense-making instances. We identified the focus formulation episodes from the interview data and analysed across them by annotating and categorizing. We analysed the episodic focus formulations by subtasks and then summarised over the subtasks to cover the whole data interaction.
Results. We identified three subtasks, each with three episodic focus formulations. Summarising over the subtasks showed that episodic focus formulation in data interaction encompasses task focus, data focus and procedural focus formulation. Conclusions. This study has implications for theory development and for supporting data interaction.
‘Everything is different’: the impact of acquiring aphasia on information seeking
Authors: Kvikne Birgit , Berget Gerd
Published: September 2024

Introduction. Aphasia is a language impairment that can lead to significant changes in all aspects of life, including information-seeking behaviour. This paper presents findings from a qualitative study exploring how acquiring aphasia impacts information seeking. The study also assesses the applicability of the information behaviour theory of transitions as a framework to explore and understand this life change in the context of information-seeking behaviour.
Method. Data were collected through semi-structured interviews and observation of search behaviour of 20 people diagnosed with aphasia.
Analysis. Interviews were recorded, transcribed, anonymised and imported into NVivo. The data were examined using thematic analysis.
Results. The study found that acquiring aphasia entails significant changes, necessitating the development of new information-seeking behaviour. The findings suggest that creating more inclusive information systems for people with aphasia is possible, with features such as support for word mobilisation and tolerance for spelling errors.
Conclusions. Acquiring aphasia led to significant changes in information seeking behaviour. The information behaviour theory of transitions proved useful in identifying information seeking barriers for people with aphasia, as well as providing knowledge on how to support information-seeking behaviour for this cohort.
Effect of Nonessential Alloying Elements and Solution pH on Corrosion Behavior of Al-Mg Alloys Fabricated by Cold Spray Deposition
Authors: Kim Munsu , Brewer Luke N. , Kubacki Gregory W.
Published: September 2024

This paper highlights the difference in corrosion behavior of cold spray (CS) deposited AA5083 and Al-5.0 wt% Mg alloys with an emphasis on the effect of nonessential alloying elements and solution pH. CS process is an emerging technology for repairing damaged structures via solid-state deposition. While recent works have focused on CS Al alloys, less attention has been paid to CS Al binary alloys in comparison to Al engineering alloys, which have important implications for the integrity of structural components repaired by the CS process. Herein, the microstructure of CS AA5083 and Al-5.0 wt% Mg binary alloy was analyzed using various microstructure characterization techniques. Corrosion behavior was assessed using electrochemical and immersion tests in 0.6 M NaCl (pH 8.3 and 11.5) solution. Intermetallic phases, such as Fe- and Si-containing phases, in CS AA5083 decreased corrosion resistance by increasing cathodic kinetics in a near-neutral solution. In addition, immersion tests demonstrated lower corrosion resistance in CS AA5083 than in CS Al-5.0 wt% Mg, whereas an alkaline environment showed the presence of a secondary passive layer on CS AA5083, providing higher corrosion resistance compared to CS Al-5.0 wt% Mg.
Desinformação em saúde na pós-pandemia: uma análise a partir da plataforma de fact-checking Agência Lupa
Authors: Pereira Tavares Leonardo , Costa de Brito Higor , Sá Brasileiro Fellipe
Published: September 2024

Objetivo: Analisar as desinformações em saúde checadas pela plataforma de fact-checking Agência Lupa a fim de entender como a desinformação em saúde foi compartilhada nas plataformas digitais nos primeiros meses após a pandemia da COVID-19, e quais foram as suas principais tendências no Brasil.
Método: Adota-se a abordagem quali-quantitativa no processo de extração, interpretação e visualização dos conteúdos checados, por meio da técnica de raspagem de dados e análise de textos digitais.
Resultado: Constata-se que os conteúdos desinformativos que imitam fontes confiáveis a partir de imagens e vídeos, circulados na plataforma WhatsApp, propagaram-se por múltiplos canais, dispersando a desinformação em saúde. Além disso, observa-se padrões de persistência e constância quanto ao termo Vacina, indicando-o como escopo de uma narrativa contínua de desinformação.
Conclusões: Conclui-se que os aspectos das práticas de desinformação destacados pelo método adotado podem subsidiar estratégias de combate à desinformação em saúde no Brasil.
Nas ruas, nos campos e nas páginas de jornais: os primeiros anos do futebol feminino no Brasil
Authors: Silva Diana
Published: September 2024

Resenha do livro: Bonfim, Aira F. Futebol feminino no Brasil: entre festas, circos e subúrbios, uma história social (1915-1941). São Paulo, 2023. Edição da autora.
Multisystem inflammatory syndrome in adults hospitalizations in the United States; evaluating patient characteristics, COVID-19 associations, and mortality
Authors: Kumar Nomesh , Syed Noem N. , Singla Rahul , Bawna Fnu , Ahmed Mushood , Jain Hritvik , Dhaliwal Jasninder S. , Arora Gagandeep S. , Verma Renuka , Ramphul Kamleshun , Ahmed Raheel , Ahmed Sajeel
Published: September 2024

Introduction

Multisystem inflammatory syndrome in adults (MIS-A) is thought to be closely linked with COVID-19 infection. This study aims to elucidate the demographics and clinical characteristics of MIS-A, aiding in timely diagnosis and management.

Methods

Utilizing the National Inpatient Sample (NIS) database (2021), patients were stratified into MIS-A and non-MIS-A groups. Baseline characteristics and comorbidities, the association with COVID-19, post-COVID-19 syndrome, and personal history of COVID-19, as well as impact on mortality were studied.

Results

We identified 2,730 adults with MIS-A. MIS-A was linked with active COVID-19 infection (aOR = 27.436, p < 0.001), post-COVID-19 syndrome (aOR = 32.766, p < 0.001), personal history of COVID-19 (aOR = 2.963, p < 0.001), and an increased mortality (aOR = 3.743, p < 0.001).

Conclusions

Using data adjusted for confounding variables, MIS-A was found to be associated with active and past COVID-19, and a greater mortality rate when compared to non-MIS-A patients.
Health-related quality of life impairment is equal for antiphospholipid syndrome whether primary or associated with systemic lupus erythematosus
Authors: Haladyj Ewa , Matusiewicz Agata , Wysocki Tomasz , Olesinska Marzena
Published: September 2024

Introduction

Antiphospholipid syndrome (APS) manifests with thrombosis and pregnancy losses and may significantly impair the health-related quality of life (HRQoL). So far, APS has been perceived as a less burdensome disease than systemic lupus erythematosus (SLE), but data on this are scarce. The purpose of the present study was to evaluate HRQoL in APS patients by applying the Short Form 36 Health Survey (SF-36) and World Health Organization Quality-of-Life Scale (WHOQoL-BREF); to examine the impact of primary APS and with coexisting SLE (APS/SLE) on patient HRQoL; and to provide a description of the APS patient population.

Material and methods

One hundred twelve patients with APS were included in the study, 57 of them with primary APS and 55 with coexisting SLE. HRQoL was measured by the 36-Item SF-36 and WHOQoL questionnaires.

Results

Mean age was 47 years (47.6 ±13.8), and 96 patients were (85.7%) women. The mean disease duration was 72 months. Health-related quality of life impairment was found in both components for all APS patients in comparison to the healthy Polish population (p < 0.0001). There was no diffe­rence between APS and APS/SLE groups in HRQoL (mental component p = 1.0, physical component p = 0.337). The history of venous thrombosis was associated with HRQoL impairment only in the APS/SLE group in the physical component (p = 0.0118), not in primary APS (p = 0.6862). The mental component of SF-36 was associated with all domains of WHOQoL-BREF, while the physical component was associated only with physical health (p < 0.001).

Conclusions

Primary APS and APS secondary to SLE lead to equal impairment in HRQoL. Diagnosis and proper management of all patients with APS are essential to prevent thrombosis and miscarriages, which ultimately will lead to longer survival with optimal life quality.
Neue Generation an Druckregelventilen: Eine smarte Konstruktion in Sitzbauweise
Authors:   Peter Jakobs,   Lars Hauptmann
Published: September 2024

Hydraulische Spannsystem gehören zu den Grundfunktionen einer jeden Werkzeugmaschine, um das Spannen und Lösen von Werkstücken zu realisieren. Änderung sich die Anforderungen an die Spannkraft, muss der Druck stufenlos eingestellt werden können.
Isolated lumbar myxopapillary ependymoma Case-report
Authors: Achoura Sameh , Kammoun Hajer , Ammar Hichem , Yedaes Med Dehmani , Radhouen Khaled , Chikili Ridha
Published: September 2024

INTRODUCTION Spinal ependymoma is described typically as an intramedullary tumor arising from ependymal cells lining the ventricles and the central spinal canal. Intradural extramedullary (IDEM) ependymomas subtype are extremely rare. (1) Case-report: It’s about a 32-year-old patient with no past medical history who was admitted to our neurosurgical department for non-systematized bilateral lumbocrural pain set on upon an intense sport activity limiting his ability of walking with a perimeter reduced to 50 meters deteriorating progressively over 6 months.
INTERVENÇÃO PEDAGÓGICA PARA O MUNICÍPIO DE GRAVATÁ/ PE
Authors: Lucas Fialho Belém José , Pereira Regis Afonso Lucas , Alves Firmo Luciana , José Negromonte Maria , Monaliza Cabral Couto Naira , Maria Nunes Batista Susana , Da Conceição Gusmão Maria
Published: September 2024

O presente projeto de intervenção surge a partir de uma proposta feita pelo Professor Doutor Marcos Barros através da disciplina Metodologias Ativas e Inovadoras 2 pelo Programa de Pós-graduação em Educação em Ciências e Matemática da UFPE. O município pernambucano de Gravatá foi o escolhido por esta equipe para a construção deste projeto que visa a realização de formação continuada com Professores e Coordenadores Pedagógicos para uma imersão nas propostas de aprendizagem através das Metodologias Ativas e Inovadoras com foco na melhoria do rendimento escolar.  Também tendo como base as formações continuadas, a sensibilização dos professores da rede municipal de ensino para o sentimento de pertencimento à escola como um todo. Visa desenvolver   estratégias inovadoras para atingir o nível desejado de letramento dos alunos de 6º ao 9º anos, e consequentemente elevar o Índice de Desenvolvimento da Educação Básica (IDEB) no município. Essas formações serão realizadas através de encontros mensais com Gestores, Coordenadores e Professores para agir através de evidências, direcionando sua prática de forma estratégica, focado em resultados concretos.
NOVAS ESTRATÉGIAS PARA O ENSINO DE CIÊNCIAS E BIOLOGIA APLICADAS AO ESTUDO DO REINO ANIMALIA
Authors: Lima Juliana Thays Mota de , Jesus Raul Barros Pereira de , Xavier Túlio Freire , Santos Júlio Cesar de Oliveira
Published: September 2024

A aplicação da sequência didática em questão buscou promover uma abordagem de forma mais abrangente sobre o conteúdo referente ao reino animália, com ênfase nos filos porífera e cnidária, para uma turma de segundo ano de uma escola de rede pública de ensino. Sua criação e desenvolvimento contaram com diversas estratégias didáticas que pudessem contribuir com a formação dos discentes, prezando pela obtenção de novos conhecimentos, bem como promovendo a participação e cooperação dos estudantes, de forma lúdica. Os resultados obtidos através das experiências vivenciadas durante a execução deste trabalho permitiram identificar, com base na literatura, que sequências didáticas quando são bem articuladas, promovem ganhos bem consideráveis, tanto para os alunos que dela participam, quanto para os docentes ou licenciandos que a desenvolvem e aplicam.
A PEDAGOGIA DA GRATIDÃO NAS AULAS DE MATEMÁTICA: UM RELATO DE EXPERIÊNCIA
Authors: Medeiros Jader Tavares de Spíndola , Torquato Ana Karoline de Barros , Santos Irlann Henrique de Souza
Published: September 2024

Este trabalho visa relatar a experiência vivenciada por um dos autores ao utilizar a Pedagogia da Gratidão em uma de suas aulas de Matemática na educação básica, após um momento de reflexão e provocação dentro da disciplina de Metodologias Criativas, Encantadoras, Ativas e Inovadoras que faz parte do Programa de Pós-Graduação em Educação em Ciências e Matemática (PPGECM), da Universidade Federal de Pernambuco (UFPE). Tomando como base os trabalhos de Pagan, Araújo e Maia (2019),  Hulme (2021), Okada e Sheehy (2020), Muniz et al (2020), dentre outros, fazemos uma breve abordagem sobre o uso da Gratidão na educação, sobre a Diversão e o Encantamento, buscando por processos que enxerguem tanto professores, quanto estudantes, como seres sujeitos às mais diversas emoções e sentimentos para, após isso, como metodologia, apresentar a pesquisa em ação realizada, trazendo o relato da experiência de utilizar esse tema dentro de sala de aula. Dentre os resultados pudemos observar as potenciais contribuições geradas por uma prática orientada por meio da pedagogia da gratidão, tendo em vista que ao decorrer da experiência vivenciada pelo professor foi possível observar uma interação e aproximação mais acentuadas por parte dos estudantes. Também notamos a necessidade de uma associação cada vez mais ampla entre as bases teóricas e as práticas docentes, no intuito de que experiências como as aqui relatadas sejam cada vez mais compartilhadas e integradas ao ensino nos ambientes escolares.
IMPORTÂNCIA DO CLUBE DE CIÊNCIAS EM ESCOLAS DE VULNERABILIDADE SOCIAL: UM RELATO DE EXPERIÊNCIA NUMA ESCOLA PÚBLICA NO INTERIOR DE PERNAMBUCO
Authors: Novaes Caroline Géssica Gomes de , Silva Mayara Lima da , França Flavia Juliana Lobato de , Mendes Mayra de Santana
Published: September 2024

Durante a década de 70, no Brasil, muitas escolas montaram clubes de ciências, que tinham como finalidade formar pequenos cientistas enfatizando o trabalho laboratorial. De lá para cá a realidade das escolas brasileiras passou por mudanças e com isso as perspectivas e possibilidades, em relação aos clubes de ciências, também. Escolas públicas, principalmente de vulnerabilidade social, carecem de metodologias e estratégias que prendam a atenção dos alunos, e mais que isso, que os estimulem a pensar e com isso se tornem cidadãos críticos e valiosos para sociedade. Diante disso, o presente artigo tem como motivação compartilhar a vivência e o funcionamento de um clube de ciência em uma escola pública do interior Pernambucano, além de procurar entender como podemos mitigar a crença difundida que para montar um clube a escola precisa ter um bom laboratório e como esta prática pode ser considerada relevante para o ensino de ciências O relato foi vivenciado na escola Padre Nicolau Pimentel, situada no município de Feira Nova - PE, no período de 2018 - 2019.
GRATIDÃO COMO PEDAGOGIA: UMA PRÁTICA INOVADORA VIVENCIADA NOS MOLDES DE UM FESTIVAL
Authors: Melo Karine Claudino da Hora , Nascimento André Felipe Gomes do , Barros Gleize Cristina França de , Barros Maria Gerlaine de Melo , Abranches Sérgio Paulino
Published: September 2024

O artigo aborda a complexa temática da gratidão, explorando sua etimologia e conceitos subjacentes, especialmente no contexto educacional. A palavra "gratidão" é analisada em sua origem latina e hebraica, destacando sua associação com a bondade, generosidade e reconhecimento de presentes recebidos. A autora Kerry Howells é apresentada como precursora da ideia de gratidão na educação, destacando sua abordagem de gratidão não apenas como emoção, mas como uma pedagogia ativa. A gratidão é discutida como uma prática que vai além de meros sentimentos ou pensamentos, envolvendo ação consciente e expressão ativa. Essa prática é vista como uma ponte relacional que promove climas calorosos e empáticos em sala de aula, essenciais para a aprendizagem e o desenvolvimento dos alunos. A reciprocidade é enfatizada como um aspecto fundamental da gratidão, conectando os indivíduos em uma rede de relações positivas. A autora destaca os desafios na implementação da gratidão na educação, incluindo pressões administrativas, concepções errôneas sobre a gratidão e a falta de reciprocidade. No entanto, são apresentadas práticas específicas para cultivar a gratidão na sala de aula, como expressar gratidão aos alunos, aos pais, aos colegas e ao ambiente. Além disso, o artigo discute a gratidão como uma prática moral, distinta do pensamento positivo e do otimismo superficial. A gratidão Ela é vista como uma atitude que promove relacionamentos saudáveis e desenvolve um senso de interconexão e interdependência entre os membros da comunidade educacional. Em suma, o artigo destaca a importância da gratidão como uma pedagogia transformadora, capaz de promover uma aprendizagem humanizada e cultivar um ambiente escolar acolhedor e positivo. A prática da gratidão é apresentada como um caminho para o desenvolvimento pessoal e a construção de relacionamentos significativos, tanto na sala de aula quanto na vida cotidiana.
TERREIROS DE CANDOMBLÉ, METODOLOGIAS E APRENDIZADO: um relato de experiência em uma disciplina imersiva
Authors: Andrade Daianny Maria de
Published: September 2024

Este é um relato de experiência de uma estudante de mestrado, na condição de aluna especial, da disciplina “Metodologias, Aprendizagem e a Educação das Relações Étnico-raciais”, do Programa de Pós-Graduação em Educação em Ciências e Matemática, da Universidade Federal de Pernambuco, campus Agreste, ministrada pelos docentes: Dr. Marcos Barros e Dr.Ivanildo Carvalho. A disciplina fez utilização de metodologias ativas, a partir de conceitos de decolonialidade, Lei 10.639, história e cultura afro-brasileira,  trabalhado, desenvolvido e vivenciado em um terreiro de Candomblé, no bairro do Ibura, no Recife. Ela teve o apoio do Afoxé Omô Nilê Ogunjá que promoveu aulas de canto, dança, percussão, preparação da alimentação dos participantes e disponibilização do espaço para realização das aulas. O movimento todo da disciplina despertou todos os tipos de sentimentos, mexeu com as emoções, os textos bases serviram de embasamento teórico, além disso teve atividade prática de imersão em quatro escolas localizadas no Ibura. A realização das provocações nas escolas, essa imersão em um ambiente escolar, fizeram os estudantes e a comunidade escolar refletir, com isso, ajudaremos a propor um plano de ação contra o racismo e o fortalecimento dessa identidade negra, dessa história e cultura afro-brasileira nas escolas envolvidas.
DIÁLOGO INTERDISCIPLINAR: vivências na Educação das Relações Étnico-raciais no terreiro de candomblé e escolas do bairro Ibura
Authors: Silva Brivaldo Antonio de Souza
Published: September 2024

Este trabalho é fruto da disciplina “Metodologias, aprendizagens e a Educação das relações étnico-raciais”, do mestrado acadêmico do programa de Pós-graduação em Educação em Ciências e Matemáticas que aconteceu de forma imersiva dentro de um terreiro de Candomblé. A imersão nos levou a um terreiro de candomblé para discutir temas como a decolonização e a Lei 10.639/2003 para juntos discutir metodologias para o ensino da história e da cultura afro-brasileira nas escolas. A imersão também aconteceu em escolas do Bairro Ibura, em Recife, onde se pensou e se desenvolveu projetos para as escolas do local, que  abordem temas que, na maioria das vezes, são colocados em segundo plano na educação.
Primera edición del concurso de poesía Programa de Donación de Cuerpos 2021, Universidad de Costa Rica
Authors: Gonzalez Fernandez Jessica
Published: September 2024

El Programa de Donación de Cuerpos de la Escuela de Medicina de la Universidad de Costa Rica llevó a cabo la primer edición del concurso de poesía PRODOCU 2021 como parte de las actividades para celebrar su tercer aniversario, en colaboración con el proyecto EC-288- Promoción desarrollo y difusión de la escritura creativa en lenguas extranjeras, con la intención de que la población universitaria escribiera y expresara la “Importancia de la donación del cuerpo para la docencia e investigación en Costa Rica”.El concurso se abrió a estudiantes, administrativos, docentes y graduados o graduadas de la Universidad de Costa Rica de todas las carreras y todas las sedes del país; además se contó con una participación total de 30 poemas, de distintas sedes y carreras. El primer lugar se convirtió también en el poema emblema del Programa de Donación de Cuerpos para ser utilizado en futuros homenajes a donantes.
A FORMAÇÃO DE PROFESSORES NA PERSPECTIVA DA MÍDIA EDUCAÇÃO
Authors: Gonçalves Luciana Marinho Soares , Santos Neta Ana Mendes dos , Pupim Fernanda Azevedo , Ramos Gisele da Gama , Gonçalves Gisele Martins , Rebeque Patrícia Leal , Junqueira Rafael Cavalcante , Brito Rodrigo Maldonado Guimarães
Published: September 2024

Este estudo investigou como a formação de professores pode ser estruturada para incorporar os princípios e práticas da mídia-educação. O objetivo geral foi analisar as abordagens atuais da formação docente na perspectiva da mídia-educação, identificando desafios e oportunidades para uma integração das mídias no processo formativo. Utilizou-se a metodologia de revisão bibliográfica, analisando obras relevantes que abordam o tema. Os resultados indicaram que, embora a mídia-educação seja reconhecida como essencial, sua aplicação prática enfrenta desafios, como a falta de integração plena nos currículos e a necessidade de uma formação crítica dos professores em relação ao uso das mídias. A análise dos estudos revisados apontou que a mídia-educação, em muitos casos, é tratada como um complemento, o que limita seu impacto na prática pedagógica. As considerações finais sugeriram que, para alcançar uma formação docente eficaz em mídia-educação, é necessário reestruturar os currículos e promover uma abordagem crítica. Além disso, identificou-se a necessidade de pesquisas futuras que explorem a formação continuada dos professores e a aplicação da mídia-educação em diferentes contextos educacionais.
A LUDICIDADE E O DESENVOLVIMENTO DA LEITURA E ESCRITA DAS CRIANÇAS NA PRÉ-ESCOLA
Authors: Silva Ozivania Lopes da , Barros Josefa Simone de , Viégas Aline Daniela Alves
Published: September 2024

A ludicidade, através de brincadeiras, jogos e atividades ao ar livre, permite que as crianças encontrem maneiras de lidar com conflitos diários nas instituições de educação infantil. Esse processo fomenta a construção de novos conhecimentos, explorando e criando possibilidades de aprendizagem dentro e fora da sala de aula. Segundo Pernambuco (2019), é essencial tratar as crianças como sujeitos integrais, desenvolvendo-se por meio das interações sociais e brincadeiras. As Interações e Brincadeiras são eixos centrais do Currículo de Pernambuco, devendo ser valorizadas e respeitadas na Educação Infantil. Este artigo tem como objetivo apresentar a ludicidade como fio condutor para o desenvolvimento da leitura e escrita na educação infantil. A metodologia utilizada é um relato de experiência que revela a beleza e os desafios do desenvolvimento do Sistema de Escrita Alfabética (SEA). Os resultados indicam que, com metodologias assertivas e estímulos adequados, as crianças conseguem aprender o sistema notacional da escrita alfabética de maneira significativa e sem sofrimento.
The role of time averaging of eddy covariance fluxes on water use efficiency dynamics of maize
Authors: Karimindla Arun Rao , Kumari Shweta , S R Saipriya , Chintala Syam , P. Kambhammettu​​​​​​​ BVN
Published: September 2024

Abstract. Direct measurement of carbon and water fluxes at high frequencies make eddy covariance (EC) the technique most preferred to characterize water use efficiency (WUE). However, reliability of EC fluxes largely hinges on the energy balance ratio (EBR) and inclusion of low-frequency fluxes. This study is aimed at investigating the role of the averaging period in representing EC fluxes and its propagation into WUE dynamics. Carbon and water fluxes were monitored in a drip-irrigated maize field at 10 Hz frequency and were averaged over 1, 5, 10, 15, 30, 45, 60, and 120 min, considering daytime unstable conditions. The optimal averaging period to simulate WUE fluxes for each growth stage is obtained by considering cumulative frequency (Ogive) curves. A clear departure of EBR from unity was observed during the dough and maturity stages of the crop due to ignorance of canopy heat storage, low-frequency flux losses, and an inadequate averaging period. Deviations in representing water (carbon) fluxes relative to the conventional 30 min average are within ±3 % (±10 %) for 10–120 min averaging and beyond ±3 % (±10 %) for other time averages. Ogive plots show that the optimal averaging period to represent carbon, water, and WUE fluxes is 15–30 min for the sixth leaf and silking stages and is 45–60 min for the dough and maturity stages. Dynamics of WUE considering optimal averaging periods are in the range of μ ± σ: 1.49 ± 0.95, 1.37 ± 0.74, 1.39 ± 0.79, and 3.06 ± 0.69 µmol mmol−1 for the sixth leaf, silking, dough, and maturity stages, respectively. The error in representing WUE by conventional 30 min averaging is marginal (< 1.5 %) throughout the crop period except for the dough stage (12.12 %). We conclude that the conventional 30 min averaging of EC fluxes is not appropriate for representing WUE throughout the crop period. Our findings can help to develop efficient water management strategies by accurately characterizing WUE fluxes from the EC measurements.
Transformations in Exposure to Debris Flows in Post-Earthquake Sichuan, China
Authors: Utley Isabelle , Hales Tristram , Hussain Ekbal , Fan Xuanmei
Published: September 2024

Abstract. Post-earthquake debris flows can exceed volumes of 1 x 106m3 and pose significant challenges to downslope recovery zones. These stochastic hazards form when intense rain remobilises coseismic landslide material. We investigate the relationship between changing exposure and hazard of post-2008 debris flows in three gullies in Sichuan province, China. These were selected based on the number of post-earthquake check dams – Cutou (2), Chediguan (2) and Xiaojia (none). Using high resolution satellite images, we developed a multitemporal building inventory from 2005 to 2019, comparing it to spatial distribution of previous debris flows and future modelled events. Post-earthquake urban development in Cutou and Chediguan increased exposure to a major debris flow in 2019 with inundation impacting 40 % and 7 % of surveyed structures respectively. We simulated future debris flow runouts using LAHARZ to investigate the role of check dams in mitigating three flow volumes – 104m3 (low), 105m3 (high) and 106m3 (extreme). Our simulations show check dams effectively mitigate exposure to low and high flow events but prove ineffective for extreme events with 59 % of buildings in Cutou, 22 % in Chediguan and 33 % in Xiaojia significantly affected. We verified our analyses through employing a statistical exposure model, adapted from a social vulnerability equation. Cutou's exposure increased by 64 % in 2019, Chediguan's by 52 % whilst only 2 % for Xiaojia in 2011, highlighting that extensive grey infrastructure correlates with higher exposure to extreme debris flows, but less so to smaller events. Our work suggests the presence of check dams increases the perception of exposure reduction downstream, however, ultimately produces a levee effect that raises exposure to large events.
GERB Obs4MIPs: a dataset for evaluating diurnal and monthly variations in top-of-atmosphere radiative fluxes in climate models
Authors: Russell Jacqueline E. , Bantges Richard J. , Brindley Helen E. , Bodas-Salcedo Alejandro
Published: September 2024

Abstract. A newly available radiative flux dataset specifically designed to enable the evaluation of the diurnal cycle in top-of-atmosphere (TOA) fluxes as captured by climate and Earth system models is presented. Observations over the period 2007–2012 made by the Geostationary Earth Radiation Budget (GERB) instrument are used to derive monthly hourly mean outgoing longwave radiation (OLR) and reflected shortwave (RSW) fluxes on a regular 1° latitude–longitude grid covering approximately 60° N–60° S and 60° E–60° W. The impact of missing data is evaluated in detail, and a data-filling solution is implemented using estimates of broadband fluxes from the Spinning Enhanced Visible and Infrared Imager flying on the same Meteosat platform, scaled to the GERB observations. This relatively simple approach is shown to deliver an approximate improvement by a factor of 10 in both the bias caused by missing data and the associated variability in the error. To demonstrate the utility of this V1.1 filled GERB Observations for Climate Model Intercomparison Projects (Obs4MIPs) dataset, comparisons are made to radiative fluxes from two climate configurations of the Hadley Centre's Global Environmental Model: HadGEM3-GC3.1 and HadGEM3-GC5.0. Focusing on marine stratocumulus and deep convective cloud regimes, diurnally resolved comparisons between the models and observations highlight discrepancies between the model configurations in terms of their ability to capture the diurnal amplitude and the phase in TOA fluxes, details that cannot be diagnosed by comparisons at lower temporal resolutions. For these cloud regimes the GC5.0 configuration shows improved fidelity to the observations relative to GC3.1, although notable differences remain. The V1.1 filled GERB Obs4MIPs monthly hourly TOA fluxes are available from the Centre for Environmental Data Analysis, with the OLR fluxes accessible at https://doi.org/10.5285/90148d9b1f1c40f1ac40152957e25467 (Bantges et al., 2023a) and the RSW fluxes accessible at https://doi.org/10.5285/57821b58804945deaf4cdde278563ec2 (Bantges et al., 2023b).
Role of bottom pressure in the seasonal cycle of coastal sea level
Authors: Ponte Rui , Schindelegger Michael
Published: September 2024

Changes in sea level can arise from steric and manometric effects, with the partition between them depending on depth and other dynamical factors. In the shallow coastal oceans, the manometric term associated with bottom pressure variations is expected to become larger than the steric term, but a quantitative analysis of this breakdown remains missing. In this work, we use gridded monthly bottom pressure estimates from GRACE and GRACE-FO, together with temperature and salinity data compiled under the World Ocean Atlas 2023, to quantify manometric and steric contributions to the mean seasonal cycle in sea level across the coastal zone, as observed by tide gauges and satellite altimeters.Focusing on depths shallower than 2000 m and global median values, the sum of the estimated steric and manometric terms can explain approximately 65% of the annual variance and 40% of the semiannual variance in the sea level observations. We identify several regions, e.g., the Australian seaboard, where the seasonal sea level budget is not closed, pointing to data noise, limited horizontal resolution, or residual leakage errors in the GRACE/-FO solutions. Indeed, comparisons of sea level, steric and manometric terms calculated based on different products suggest sizable uncertainties in the available estimates of the mean seasonal cycle in coastal bottom pressure. For most regions with a sufficiently tight budget closure, we find that whilst the importance of the manometric term generally increases with decreasing water depth, steric contributions are non-negligible near coastlines, especially at the annual frequency.
Global mean and local sea level budget from updated observations and residual analysis
Authors: Bouih Marie , Barnoud Anne , Pfeffer Julia ,   SLBC_cci+ team
Published: September 2024

The closure of the Sea Level Budget (SLB) is a key challenge for modern physical oceanography. First, it is essential that we ensure the proper identification and quantification of each significant contributor to sea level change through this closure. Second, it provides an efficient means to closely monitor and cross-validate the performance of intricate global observation systems, such as the satellite altimetry constellation, satellite gravimetry missions (GRACE/GRACE-FO), and the Argo in-situ network. Third, this closure reveals to be a beneficial approach for assessing how well the observed climate variables, such as sea level, barystatic sea level, temperature and salinity, land ice melt, and changes in land water storage, comply with conservation laws, in particular those related to mass and energy.In this presentation, we will discuss the state of knowledge of global mean and regional sea level budget with up-to-date observations, encompassing 1) an up-to-date assessment of the budget components and residuals, along with their corresponding uncertainties, spanning from 1993 to 2023 in global mean and throughout the GRACE and Argo era for spatial variations; 2) the identification of the periods and areas where the budget is not closed, i.e. where the residuals are significant; 3) advancements in the analysis and understanding of the spatial patterns of the budget residuals. A focus will be made on the North Atlantic Ocean where the residuals are significantly high. We investigate the potential errors causing non-closure in each of the components (e.g., in situ data sampling for the thermosteric component, geocenter correction in the gravimetric data processing) as well as potential inconsistencies in their processing that may impact large-scale patterns (e.g., centre of reference and atmosphere corrections). Errors linked to the system observability (due to different sampling and resolution of the various observations) will be quantified with synthetic data extracted from ocean simulations.This work is performed within the framework of the Sea Level Budget Closure Climate Change Initiative (SLBC_cci+) programme of the European Space Agency (https://climate.esa.int/en/projects/sea-level-budget-closure/). This project was initiated by the International Space Science Institute Workshop on Integrative Study of Sea Level Budget (https://www.issibern.ch/workshops/sealevelbudget/).
Calibration and Characterisation of GRACE-FO Magnetometers
Authors: Michaelis Ingo , Styp-Rekowski Kevin Marcel , Rauberg Jan , Rother Martin , Kervalishvili Guram , Korte Monika
Published: September 2024

Magnetic field data from satellite missions play a significant role in characterizing and understanding space weather conditions. Satellite magnetic field observations from different altitudes and local times are necessary to disentangle the complex processes contributing to each observation of Earth’s magnetic field and study the various individual processes. While the dedicated magnetic field satellite missions give good global data coverage at first sight, the coverage is still sparse if simultaneous observations from several different altitudes and with a good local time coverage are desired. Moreover, gaps between dedicated magnetic field satellite missions, such as between the CHAMP and Swarm missions from 2010 to 2013, exist and might occur again in the future. Many satellites non-dedicated for magnetic field measurements, e.g. GRACE-FO, carry so-called platform magnetometers (PlatMags) that are part of the attitude and orbit control system (AOCS). These satellites have a variety of mission goals and the PlatMags are additional instrumentation for navigational use.
Using analytical and machine learning tools and additional satellite telemetry data we can remove artificial disturbances from the satellite magnetometers and calibrate PlagMags for scientific use.
Influence of Laterally Heterogeneous Mantle Viscosity Structure on the Signal of Glacial Isostatic Adjustment in GRACE
Authors: Hightower Erin , Caron Lambert , Landerer Felix , Larour Eric , Watkins Michael
Published: September 2024

Geodetic data is essential to understanding interactions between the solid-Earth, ice sheets, and ocean and for accurately measuring ice mass loss and sea level rise. Glacial isostatic adjustment (GIA) – the viscoelastic response of the solid-Earth to changes in ice sheets and sea level – has a strong signal in geodetic datasets, particularly the Earth’s gravity field. Traditional GIA models assume a 1D radial mantle viscosity structure that is often inconsistent with 3D viscosity fields estimated from seismic tomography. However, laterally heterogeneous viscosity affects both the magnitude and spatial pattern of GIA and hence the correction applied for the level-3 GRACE(-FO) data. We quantify the degree to which such variations change the GIA response by systematically increasing lateral heterogeneity away from a 1D model. We model GIA using the spherical finite-element surface loading code CitcomSVE to predict vertical land motion, geoid rates, and equivalent water height (EWH). 3D viscosity structure is derived from seismic tomography and parameterized by an activation parameter that controls the temperature dependence of the viscosity and hence the strength of the lateral variations, which can vary by more than six orders of magnitude. Using a suite of viscosity models and GIA solutions, we assess the biases that arise when using GIA models that neglect 3D viscosity and illustrate the changes in the ocean mass trend that arise from incorporating stronger variations. Compared to models with 3D viscosity, the 1D model currently employed for GRACE(-FO) corrections tends to underestimate uplift rates and EWH changes in the formerly glaciated regions of North America. Differences between 1D and 3D GIA solutions are also pronounced throughout the North Atlantic, where increasingly strong lateral heterogeneity increases the rate of geoid change at present day due to GIA. Such differences may have implications for the interpretation of AMOC trends from the long-term GRACE(-FO) record. From the significant differences in the GIA solutions, particularly at the local and regional level, we propose that 3D viscosity should not be ignored in GIA solutions used for GRACE(-FO). Accurately accounting for GIA in such datasets is essential to estimates of surface water mass balance and projections of sea level rise. Future work will address the optimization and uncertainty quantification of the 3D viscosity structure used in such models.
Estimating Global Ocean Mass Change from Low-Degree Gravity Field
Authors: Nie Yufeng , Chen Jianli , Peng Dongju
Published: September 2024

The Global Mean Ocean Mass (GMOM) change reflects the large-scale mass transport between land and oceans, which has been directly and accurately measured by GRACE and GRACE-FO since 2002. However, for the pre-GRACE era, the estimation of GMOM is mainly based on the mass budget approach by combining individual mass change estimates of land water storage, glaciers, and ice sheets from geophysical models and remote sensing data, which lacks a constraint on the consistency between different components. Prior to GRACE, time-varying gravity fields can also be determined from SLR and DORIS, but their spatial resolution is generally limited to about degrees and orders (d/o) 5, which cannot be used directly to infer regional mass variations, even for regions as large as the global ocean, due to strong signal leakage. In this contribution, we present promising results using the d/o 5 SLR gravity fields for GMOM estimation after appropriately addressing signal leakage. The leakage-corrected GMOM estimates are compared with those from GRACE (d/o 60) between 2005 and 2015, a period when GRACE is considered most reliable, and the results show that they are in remarkable agreement for GMOM change rates. Our proof-of-concept study provides the possibility of using SLR/DORIS-derived low-degree gravity fields to track GMOM changes back to the 1990s, and to cross-validate GRACE/GRACE-FO estimates for the single accelerometer period after 2016.
Ocean mass changes from the lower degree harmonics
Authors: Knudsen Per
Published: September 2024

The study is based on the low degree harmonics to focus on the accurate long wavelength parts of the GRACE/GFO gravity fields. To reduce the contamination of mass changes on land a set of point masses are estimated and analyzed to verify estimates of the melting of the major ice sheets. Subsequently, residual gravity fields are used to recover characteristics and regional patterns of changes in the ocean mass.
ANU RL03 mascon solutions: regularisation based on range acceleration signal content
Authors: Tregoning Paul , McGirr Rebecca , Purcell Anthony , McQueen Herb
Published: September 2024

The ANU mascon monthly solutions are derived from least squares inversions of inter-satellite range acceleration signals, using irregularly shaped mass concentration (mascon) elements that cover the Earth. As with all GRACE and GRACE-FO monthly solutions of the temporal gravity field, regularisation of the data inversion must be applied to mitigate the noise in the solutions to permit the geophysical signals to be detected. Previous releases of ANU mascon solutions have used a “regional” regularisation approach, whereby continent-scale areas have been assigned the same mascon parameter uncertainty, which has been used for every month, in what was an attempt to use a “standard” (rather than a “tailored”) regularisation. While individual monthly solutions are smooth and free of striping errors, this standard approach led to noisy time series, with unrealistic variations in mass from one month to the next.In our ANU RL03 mascon solution we use the level of signal in the range acceleration residuals to determine a unique regularisation sigma for each mascon for each month. While much more time consuming to generate, the RL03 time series of monthly temporal gravity field estimates are more realistic in mass change variations, while maintaining similar long-term trends as the RL02 solutions. Comparisons of degree variance of our RL03 solutions show a comparable level to the other mascon solutions (CSR, JPL, GSFC).In this presentation we will explain the process of deriving the “tailorerd” regularisation matrix for each month and compare our RL03 solutions to the other mascon solutions. We will show some interesting differences between our and the other solutions, in particular for the polar ice sheets. 
Unlocking Insight: Past, Present, and Future of Groundwater Storage Change Digital Twins via GRACE and InSAR Integration
Authors: Werth Susanna , Manoochehr Shirzaei , Grace Carlson , Manuela Girotto , Nitheshnirmal Sadhasivam
Published: September 2024

Due to the hidden nature of groundwater resources and the geologic complexity of aquifers, an accurate assessment of the groundwater storage change is challenging. Over the last decades, remote sensing technologies have provided novel insights into groundwater dynamics. One example is the Satellite Gravity and Climate Experiment and its Follow-on (GRACE/FO) missions, which are sensitive to water mass changes in regionally sized aquifers. They have brought to light a global phenomenon of water bankruptcy in arid to semi-arid regions with large populations and agricultural activities like the Southwest USA, the Middle East, or northern India. Other essential technologies include those that provide surface deformation measurements and, most importantly, vertical land motion (VLM), caused by changes in water resources. High-resolution VLM maps provided by interferometric synthetic aperture radar (InSAR) acquisitions have helped quantify aquifer mechanics and groundwater dynamics worldwide at management-relevant resolutions. Despite their fine spatial resolution, continuous coverage, and complementary nature, a seamless and physically consistent combination of VLM maps from InSAR with global GRACE TWS change observations has been lacking. This presentation first reviews early advances in GRACE-InSAR combinations and their outcomes. Then, it presents a unifying approach combining GRACE and InSAR observations through a multi-physics joint inversion for quantifying groundwater storage changes (GWS) by considering the underlying physical processes driving each observation. Next, we apply this approach in a case study to estimate GWS for Central Valley California during the 2020-2021 drought. We compare the results to those from other studies. Lastly, we highlight the technological and scientific advances required to expand the approach from drought to non-drought periods and regional to continental or global spatial coverage. Accurate observation of GWS with high spatial resolution will improve our understanding of groundwater recharge processes, for example, by better enabling the integration of the geodetic data products into accurate groundwater hydrological models. This can further support the assessment of climate change's impact on groundwater resources and water management approaches, such as assessing the success of managed aquifer recharge.