{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:09.422921", "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": "2025-Dec-26_to_2026-Jan-01_49.0_3.5"}, "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": 2025120002321}, "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": "December 26 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 01 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 70911.85971093303}, "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": ["Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Indian-Ocean", "N.Eastern-Africa"]}, "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": ["Indian Ocean"]}, "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": 3.5}, "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": 49.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.32, 4.68], [49.47, 5.03], [49.82, 5.18], [49.97, 5.53], [50.5, 5.75], [51.03, 5.53], [51.25, 5.0], [51.03, 4.47], [50.68, 4.32], [50.53, 3.97], [50.18, 3.82], [50.03, 3.47], [49.68, 3.32], [49.53, 2.97], [49.0, 2.75], [48.47, 2.97], [48.25, 3.5], [48.47, 4.03], [48.82, 4.18], [48.97, 4.53], [49.32, 4.68]]]]}, "2025-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 4.03], [47.32, 4.18], [47.47, 4.53], [48.0, 4.75], [48.25, 4.65], [48.5, 4.75], [48.75, 4.65], [49.0, 4.75], [49.25, 4.65], [49.32, 4.68], [49.47, 5.03], [49.82, 5.18], [49.97, 5.53], [50.32, 5.68], [50.47, 6.03], [51.0, 6.25], [51.53, 6.03], [51.75, 5.5], [51.53, 4.97], [51.18, 4.82], [51.03, 4.47], [50.68, 4.32], [50.53, 3.97], [50.18, 3.82], [50.03, 3.47], [49.68, 3.32], [49.53, 2.97], [49.0, 2.75], [48.75, 2.85], [48.68, 2.82], [48.65, 2.75], [48.75, 2.5], [48.53, 1.97], [48.0, 1.75], [47.47, 1.97], [47.32, 2.32], [46.97, 2.47], [46.75, 3.0], [46.85, 3.25], [46.75, 3.5], [46.97, 4.03]]]]}, "2025-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 4.03], [47.32, 4.18], [47.47, 4.53], [48.0, 4.75], [48.25, 4.65], [48.5, 4.75], [48.75, 4.65], [49.0, 4.75], [49.25, 4.65], [49.32, 4.68], [49.47, 5.03], [49.82, 5.18], [49.97, 5.53], [50.32, 5.68], [50.47, 6.03], [51.0, 6.25], [51.53, 6.03], [51.75, 5.5], [51.53, 4.97], [51.18, 4.82], [51.03, 4.47], [50.68, 4.32], [50.53, 3.97], [50.18, 3.82], [50.03, 3.47], [49.68, 3.32], [49.53, 2.97], [49.18, 2.82], [49.15, 2.75], [49.25, 2.5], [49.03, 1.97], [48.5, 1.75], [48.25, 1.85], [48.0, 1.75], [47.47, 1.97], [47.32, 2.32], [46.97, 2.47], [46.75, 3.0], [46.85, 3.25], [46.75, 3.5], [46.97, 4.03]]]]}, "2025-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 4.03], [47.32, 4.18], [47.47, 4.53], [48.0, 4.75], [48.25, 4.65], [48.5, 4.75], [48.75, 4.65], [49.0, 4.75], [49.25, 4.65], [49.32, 4.68], [49.47, 5.03], [49.82, 5.18], [49.97, 5.53], [50.32, 5.68], [50.47, 6.03], [51.0, 6.25], [51.53, 6.03], [51.75, 5.5], [51.53, 4.97], [51.18, 4.82], [51.03, 4.47], [50.68, 4.32], [50.53, 3.97], [50.18, 3.82], [50.03, 3.47], [49.68, 3.32], [49.53, 2.97], [49.18, 2.82], [49.15, 2.75], [49.25, 2.5], [49.03, 1.97], [48.5, 1.75], [48.25, 1.85], [48.0, 1.75], [47.47, 1.97], [47.32, 2.32], [46.97, 2.47], [46.75, 3.0], [46.85, 3.25], [46.75, 3.5], [46.97, 4.03]]]]}, "2025-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 5.53], [46.5, 5.75], [46.75, 5.65], [47.0, 5.75], [47.25, 5.65], [47.5, 5.75], [47.75, 5.65], [48.0, 5.75], [48.53, 5.53], [48.75, 5.0], [48.63, 4.7], [48.75, 4.65], [49.0, 4.75], [49.25, 4.65], [49.32, 4.68], [49.47, 5.03], [49.82, 5.18], [49.97, 5.53], [50.32, 5.68], [50.47, 6.03], [51.0, 6.25], [51.53, 6.03], [51.75, 5.5], [51.53, 4.97], [51.18, 4.82], [51.03, 4.47], [50.68, 4.32], [50.53, 3.97], [50.18, 3.82], [50.03, 3.47], [49.68, 3.32], [49.53, 2.97], [49.18, 2.82], [49.15, 2.75], [49.25, 2.5], [49.03, 1.97], [48.5, 1.75], [48.25, 1.85], [48.0, 1.75], [47.47, 1.97], [47.32, 2.32], [46.97, 2.47], [46.75, 3.0], [46.85, 3.25], [46.75, 3.5], [46.88, 3.8], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.75, 4.5], [45.85, 4.75], [45.75, 5.0], [45.97, 5.53]]]]}, "2025-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 5.53], [46.5, 5.75], [46.75, 5.65], [47.0, 5.75], [47.25, 5.65], [47.5, 5.75], [47.75, 5.65], [48.0, 5.75], [48.53, 5.53], [48.75, 5.0], [48.53, 4.47], [48.18, 4.32], [48.03, 3.97], [47.5, 3.75], [47.25, 3.85], [47.0, 3.75], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.75, 4.5], [45.85, 4.75], [45.75, 5.0], [45.97, 5.53]]]]}, "2026-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 5.53], [46.5, 5.75], [46.75, 5.65], [47.0, 5.75], [47.25, 5.65], [47.5, 5.75], [47.75, 5.65], [48.0, 5.75], [48.53, 5.53], [48.75, 5.0], [48.53, 4.47], [48.18, 4.32], [48.03, 3.97], [47.5, 3.75], [47.25, 3.85], [47.0, 3.75], [46.75, 3.85], [46.5, 3.75], [45.97, 3.97], [45.75, 4.5], [45.85, 4.75], [45.75, 5.0], [45.97, 5.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.4763275095706376}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.7966491140712452}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.577230072021507, 26.7256904602051, 26.669062550862634, 26.7287638346354, 26.919998644400323, 27.237742542085186, 27.240075683593773]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.63517278035482, 26.967715199788415, 26.86727422078451, 26.902942911783896, 28.234243011474632, 28.27410786946615, 28.189619954427087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.5697405494001089, 0.682883708548908, 0.635489167397786, 0.7154169904119208, 0.8773876365516236, 1.092569789753733, 1.1466765875706284]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.6077568868807361, 0.8455963579789909, 0.7315830463541033, 0.8405097660929641, 1.4763275095706376, 1.2416529408229167, 1.2459483729453495]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4743897549133183, 1.6419002492978763, 1.5230526601444925, 1.7014425643510482, 1.700162771224299, 1.4961422994457538, 1.5785153802726664]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5745891677542883, 1.9993213141966586, 1.6710217238636746, 1.966580588806721, 1.977201998621698, 1.5605980078545916, 1.7628237693499482]}}