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Château fort d’Ecaussinnes-Lalaing (Hainaut) : de nouveaux matériaux pour une chronologie du bâti
No full textENFORCE: Expertiserapport ref. exp_579 (plaat 1A - 639543018) en ref. exp_580 (plaat 2A - 639542921), 16/12/2024
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Inventaris van het archief van de Sint-Hiloniusparochie en dekenij van Izegem : Overdracht 2021 (1610-2017)
No full textDuik in de bewogen geschiedenis van de Sint-Hiloniusparochie, het kloppend hart van Izegem sinds de vroege middeleeuwen. Dit archiefontwerp ontsluit bijna duizend jaar lokale religieuze dynamiek, stedelijke groei en sociale verandering. Van de eerste vermelding van “Isinchehem” in 1066 tot de modernisering van het kerkgebouw in de 19de eeuw en de recente pastorale hervormingen: elke periode laat zijn sporen na in documenten, kronieken, rekeningen, plannen en persoonlijke getuigenissen. De inventaris brengt niet alleen het parochiale leven in kaart, maar geeft ook toegang tot de rijke nevenarchieven van kloostergemeenschappen, sociale verenigingen en families die hun stempel drukten op de stad. Topstukken zoals een geïllustreerd 18de-eeuws biechtboekje voor doven en het Liber memorialis (1900-2005) werpen een scherpe blik op het dagelijkse en geestelijke leven. Tegelijk biedt het archief van de dekenij een ongekunsteld inzicht in de ontwikkeling van het onderwijs. Dit boek vormt een onmisbare gids voor wie Izegems verleden wil lezen zoals het werkelijk was: weerbarstig, gelaagd en verrassend veelzijdig.The records described in this inventory are held at the State Archives in Kortrijk (inventory code 516 - 25/100).This inventory is the fixed published version dated 21-11-2025. For the dynamic inventory under active revision, including recent updates and additions, please consult our online search platform AGATHA (see link below under Identifiers/URL). In AGATHA, you can also request the archival items you wish to consult in the reading room
Inventaire des archives de la commune de Vieux-Waleffe : Dépôt 2025 (1847-1977 (1980))
No full textDécouvrez l’évolution de Vieux-Waleffe, petite commune rurale traversant plus de deux siècles de transformations, depuis les municipalités de canton de 1795 jusqu’à la fusion de 1977. Ce fonds d’archives, conservé aux Archives de l’État, révèle le fonctionnement quotidien de la commune entre 1847 et 1980 : registres de population, délibérations du Conseil communal, finances, travaux publics, enseignement, assistance publique, dossiers militaires. Ces documents offrent un regard concret sur la vie locale, les décisions des autorités et l’organisation du territoire. Un instrument essentiel pour comprendre l’histoire administrative et sociale de Vieux-Waleffe.The records described in this inventory are held at the State Archives in Liège (inventory code 523 - P65).This inventory is the fixed published version dated 18-12-2025. For the dynamic inventory under active revision, including recent updates and additions, please consult our online search platform AGATHA. In AGATHA, you can also request the archival items you wish to consult in the reading room
Comparison of GEMS v3.0 tropospheric NO2 columns with ground-based DOAS instruments in Ulsan
No full textThis study presents a comprehensive validation of the Geostationary Environmental Monitoring Spectrometer (GEMS) v3.0 tropospheric NO2 vertical column density (TrVCD) product over Ulsan, South Korea. The evaluation is based on three years of Pandora TrVCDs retrieved from the sky-scan mode measurements at UNIST site (August 2021-July 2024) and two MAX-DOAS instruments operated near emission sources during and after the SIJAQ (Satellite Integrated Joint monitoring of Air Quality) 2022 campaign. Compared with Pandora, GEMS showed fair agreement with a slope of 0.74, a correlation coefficient of 0.55, and a mean relative difference of +46\%, generally overestimating at low NO2 levels but underestimating under high-NO2 conditions (\>1 × 1016 molec. cm−2). To account for spatial representativeness mismatches between GEMS and Pandora, we introduced the Tropospheric Dominance Index (TDI), defined as the ratio between TrVCDs from sky-scan and direct-sun observations. The high-TDI cases (TDI \> 85th percentile) exhibited a pronounced negative bias between GEMS and Pandora (MD = –2.67 × 1015 molec. cm−2, MRD = –13.9\%), indicating that they were generally associated with GEMS underestimation in high-NO2 conditions. Seasonal analyses of diurnal variation at UNIST revealed that GEMS exhibited a systematic positive bias but captured similar daily patterns to Pandora in autumn and winter, whereas in spring and summer, the diurnal patterns were less consistent with Pandora. These discrepancies were linked to near-surface advection, with distinctly lower agreement under polluted inflow conditions. Comparisons with MAX-DOAS near emission sources showed lower agreements, with a slope of 0.81 and a correlation coefficient of 0.43, but agreement improved under clean inflow conditions (slope = 1.06, r = 0.59). These results highlight the importance of considering site characteristics and transport conditions in satellite validation and demonstrate the potential of TDI as an auxiliary indicator to identify cases of high NO2 inhomogeneity and improve future validation strategies for geostationary satellite products
Aperçu nouveaux inventaires et instruments de recherche Archives de l'État en Belgique - Novembre 2025
No full textMonthly overview of new inventories and finding aids: November 2025
Observing the Diurnal Variation of Atmospheric Ozone From the Geostationary Interferometric Infrared Sounder (GIIRS) Over East Asia
No full textOzone is an important atmospheric constituent, exerting a pivotal influence on atmospheric chemistry, air quality, and climate change. The monitoring of its distribution and variation is crucial for advancing our understanding of ozone development and related processes. This study presents the first spatial and temporal distributions of total ozone columns (TOC) retrieved from the Geostationary Interferometric Infrared Sounder (GIIRS), on board China's FengYun-4B satellite (FY-4B/GIIRS) launched in 2021. Particularly, we focus on the variations of TOCs in East Asia from diurnal to seasonal time scales. Retrievals are implemented using spectra from March, June, September, and December, representing different seasons. The results show that the degree of freedom for the signal (DOFS) typically exhibited a range of 0.8–1.4, with the vertical detection sensitivity of GIIRS peaking in the upper troposphere/lower stratosphere (UTLS) region, where the ozone variability is the highest. Collocation comparisons with the Infrared Atmospheric Sounding Interferometer (IASI) retrievals, the Ozone Monitoring Instrument (OMI) measurements, the European Center for Medium-Range Weather Forecasts (ECMWF) Reanalysis v5 (ERA5) simulations, and in situ ozone observations show good agreement. The comparisons of TOCs between GIIRS, Pandora and ERA5 at different latitudes and different time scales demonstrate the ability of FY-4B/GIIRS in capturing the temporal and latitudinal ozone variations, particularly at middle and high latitudes. Our work demonstrates that FY-4B/GIIRS has good capability to track ozone variations from diurnal to seasonal in East Asia, which will contribute to the understanding of regional and global ozone variations
