{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:24.552444", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2023-May-05_to_2023-May-10_19.5_12.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2023050001490}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 05 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 10 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 60151.66319625317}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Chad"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 12.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[20.6, 13.86], [20.7, 13.63], [21.0, 13.75], [21.53, 13.53], [21.75, 13.0], [21.53, 12.47], [21.18, 12.32], [21.03, 11.97], [20.5, 11.75], [20.25, 11.85], [20.18, 11.82], [20.03, 11.47], [19.5, 11.25], [18.97, 11.47], [18.82, 11.82], [18.75, 11.85], [18.5, 11.75], [17.97, 11.97], [17.75, 12.5], [17.88, 12.8], [17.47, 12.97], [17.25, 13.5], [17.35, 13.75], [17.25, 14.0], [17.47, 14.53], [17.82, 14.68], [17.97, 15.03], [18.5, 15.25], [18.75, 15.15], [19.0, 15.25], [19.25, 15.15], [19.5, 15.25], [19.75, 15.15], [20.0, 15.25], [20.53, 15.03], [20.75, 14.5], [20.54, 14.0], [20.6, 13.86]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, 14.0], [17.47, 14.53], [17.82, 14.68], [17.97, 15.03], [18.5, 15.25], [18.75, 15.15], [19.0, 15.25], [19.25, 15.15], [19.5, 15.25], [19.75, 15.15], [20.0, 15.25], [20.53, 15.03], 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[17.25, 13.5], [17.35, 13.75], [17.25, 14.0]], [[19.25, 13.65], [19.32, 13.68], [19.38, 13.8], [19.25, 13.85], [19.18, 13.82], [19.15, 13.75], [19.18, 13.68], [19.25, 13.65]]]]}, "2023-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 13.53], [18.82, 13.68], [18.97, 14.03], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.75, 13.5], [20.65, 13.25], [20.68, 13.18], [21.03, 13.03], [21.25, 12.5], [21.03, 11.97], [20.5, 11.75], [20.25, 11.85], [20.0, 11.75], [19.75, 11.85], [19.5, 11.75], [19.25, 11.85], [19.0, 11.75], [18.75, 11.85], [18.5, 11.75], [17.97, 11.97], [17.75, 12.5], [17.97, 13.03], [18.32, 13.18], [18.47, 13.53]]]]}, "2023-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 13.53], [18.82, 13.68], [18.97, 14.03], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.75, 13.5], [20.65, 13.25], [20.68, 13.18], [21.03, 13.03], [21.25, 12.5], [21.03, 11.97], [20.5, 11.75], [20.25, 11.85], [20.0, 11.75], [19.75, 11.85], [19.5, 11.75], [19.25, 11.85], [19.0, 11.75], [18.75, 11.85], [18.5, 11.75], [17.97, 11.97], [17.75, 12.5], [17.97, 13.03], [18.32, 13.18], [18.47, 13.53]]]]}, "2023-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 13.53], [18.82, 13.68], [18.97, 14.03], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.75, 13.5], [20.65, 13.25], [20.68, 13.18], [21.03, 13.03], [21.25, 12.5], [21.03, 11.97], [20.5, 11.75], [20.25, 11.85], [20.0, 11.75], [19.75, 11.85], [19.5, 11.75], [19.25, 11.85], [19.0, 11.75], [18.75, 11.85], [18.5, 11.75], [17.97, 11.97], [17.75, 12.5], [17.97, 13.03], [18.32, 13.18], [18.47, 13.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.8460824012599915}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.176992846177734}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [36.25522655438442, 36.108402168569, 36.2770237520096, 35.97018647655449, 36.164692499968965, 36.20853516642984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [37.05997976714332, 36.80258241200892, 36.751039892027904, 36.32317392723161, 36.54155974201342, 36.70296506452263]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.25956694880756, 2.068802862860512, 2.197157361666119, 1.9444666865994862, 2.2178555828295883, 2.37446333290153]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.70243941300555, 2.68373538485514, 2.8460824012599915, 2.138991603204488, 2.4421666711868397, 2.646838720201231]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.528222808623448, 1.4724830821171564, 1.571528265831395, 1.3483300171777723, 1.54106395429876, 1.6098376480704555]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8940423963941893, 1.7942592564250268, 1.9212467657191128, 1.4743137397828496, 1.7453379398305395, 1.8948979713977172]}}