{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:09:05.250169", "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-Nov-25_to_2025-Nov-29_98.5_41.5"}, "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": 2025110002384}, "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": "November 25 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 29 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 120867.67215934303}, "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": ["China", "Mongolia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia"]}, "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": 41.5}, "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": 98.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 96.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[98.0, 38.75], [97.47, 38.97], [97.32, 39.32], [97.25, 39.35], [97.0, 39.25], [96.47, 39.47], [96.25, 40.0], [96.46, 40.5], 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the event at each time step", "value": {"2025-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.25, 41.5], [97.47, 42.03], [98.0, 42.25], [98.25, 42.15], [98.5, 42.25], [98.75, 42.15], [99.0, 42.25], [99.25, 42.15], [99.32, 42.18], [99.47, 42.53], [100.0, 42.75], [100.53, 42.53], [100.75, 42.0], [100.65, 41.75], [100.68, 41.68], [100.75, 41.65], [101.0, 41.75], [101.53, 41.53], [101.75, 41.0], [101.65, 40.75], [101.75, 40.5], [101.65, 40.25], [101.75, 40.0], [101.53, 39.47], [101.0, 39.25], [100.75, 39.35], [100.5, 39.25], [100.25, 39.35], [100.0, 39.25], [99.75, 39.35], [99.5, 39.25], [99.25, 39.35], [99.0, 39.25], [98.75, 39.35], [98.5, 39.25], [97.97, 39.47], [97.75, 40.0], [97.88, 40.3], [97.47, 40.47], [97.25, 41.0], [97.35, 41.25], [97.25, 41.5]]]]}, "2025-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 42.0], [95.85, 42.25], [95.75, 42.5], [95.97, 43.03], [96.5, 43.25], [96.75, 43.15], [96.82, 43.18], [96.97, 43.53], [97.5, 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.570180213770016}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.227329959528806}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.9013208562677164, 1.624224948259723, 4.809873688526693, 2.2103192842924386, -9.350856526692667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.6720062255859602, 4.989776865641318, 8.94568786621096, 6.098410542805993, -9.350856526692667]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.134666442045079, 5.942378714651629, 9.480977237724378, 7.171374946384477, 4.518443050242695]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.338891308565337, 8.057322527388521, 12.570180213770016, 9.63517581480528, 4.518443050242695]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.354617200283978, 1.6259991839219732, 2.5991681560987923, 1.9855740524918677, 1.4471991786627538]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6274660077506793, 2.1229213809984486, 3.3447924790444743, 2.5569365896571346, 1.4471991786627538]}}