{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:09:34.229540", "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-16_to_2025-Dec-20_111.5_-0.5"}, "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": 2025120002018}, "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 16 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 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": 67992.4152349685}, "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": ["Indonesia", "Malaysia"]}, "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": -0.5}, "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": 111.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "111.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 110.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 113.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[109.85, -0.25], [109.75, 0.0], [109.85, 0.25], [109.75, 0.5], [109.85, 0.75], [109.75, 1.0], [109.97, 1.53], [110.5, 1.75], [110.75, 1.65], [110.88, 1.7], [110.75, 2.0], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.25, 2.5], [112.15, 2.25], [112.18, 2.18], [112.53, 2.03], [112.7, 1.63], [113.0, 1.75], [113.53, 1.53], [113.75, 1.0], [113.65, 0.75], [113.75, 0.5], [113.53, -0.03], [113.18, -0.18], [113.03, -0.53], [112.5, -0.75], [112.2, -0.63], [112.15, -0.75], [112.18, -0.82], [112.53, -0.97], [112.75, -1.5], [112.53, -2.03], [112.0, -2.25], [111.75, -2.15], [111.5, -2.25], [110.97, -2.03], [110.75, -1.5], [110.85, -1.25], [110.8, -1.13], [110.5, -1.25], [109.97, -1.03], [109.75, -0.5], [109.85, -0.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.5, -1.25], [109.97, -1.03], [109.75, -0.5], [109.97, 0.03], [110.5, 0.25], [111.0, 0.04], [111.5, 0.25], [112.03, 0.03], [112.25, -0.5], [112.15, -0.75], [112.18, -0.82], [112.53, -0.97], [112.75, -1.5], [112.53, -2.03], [112.0, -2.25], [111.75, -2.15], [111.5, -2.25], [110.97, -2.03], [110.75, -1.5], [110.85, -1.25], [110.8, -1.13], [110.5, -1.25]]]]}, "2025-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.35, 0.25], [110.25, 0.5], [110.35, 0.75], [110.25, 1.0], [110.47, 1.53], [110.88, 1.7], [110.75, 2.0], [110.97, 2.53], [111.5, 2.75], [112.03, 2.53], [112.25, 2.0], [112.04, 1.5], [112.18, 1.18], [112.25, 1.15], [112.32, 1.18], [112.47, 1.53], [113.0, 1.75], [113.53, 1.53], [113.75, 1.0], [113.65, 0.75], [113.75, 0.5], [113.53, -0.03], [113.18, -0.18], [113.03, -0.53], [112.5, -0.75], [112.2, -0.63], [112.15, -0.75], [112.18, -0.82], [112.53, -0.97], [112.75, -1.5], [112.53, -2.03], [112.0, -2.25], [111.75, -2.15], [111.5, -2.25], [110.97, -2.03], [110.75, -1.5], [110.85, -1.25], [110.8, -1.13], [110.5, -1.25], [109.97, -1.03], [109.75, -0.5], [109.97, 0.03], [110.32, 0.18], [110.35, 0.25]]]]}, "2025-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.75, 0.0], [109.85, 0.25], [109.75, 0.5], [109.85, 0.75], [109.75, 1.0], [109.97, 1.53], [110.5, 1.75], [110.75, 1.65], [110.88, 1.7], [110.75, 2.0], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.25, 2.5], [112.15, 2.25], [112.18, 2.18], [112.53, 2.03], [112.7, 1.63], [113.0, 1.75], [113.53, 1.53], [113.75, 1.0], [113.65, 0.75], [113.75, 0.5], [113.53, -0.03], [113.18, -0.18], [113.03, -0.53], [112.5, -0.75], [112.2, -0.63], [112.15, -0.75], [112.18, -0.82], [112.53, -0.97], [112.75, -1.5], [112.53, -2.03], [112.0, -2.25], [111.75, -2.15], [111.5, -2.25], [110.97, -2.03], [110.75, -1.5], [110.85, -1.25], [110.8, -1.13], [110.5, -1.25], [109.97, -1.03], [109.75, -0.5], [109.85, -0.25], [109.75, 0.0]]]]}, "2025-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.75, 0.5], [109.85, 0.75], [109.75, 1.0], [109.97, 1.53], [110.5, 1.75], [110.75, 1.65], [110.88, 1.7], [110.75, 2.0], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.25, 2.5], [112.15, 2.25], [112.18, 2.18], [112.53, 2.03], [112.7, 1.63], [113.0, 1.75], [113.53, 1.53], [113.75, 1.0], [113.65, 0.75], [113.75, 0.5], [113.53, -0.03], [113.18, -0.18], [113.03, -0.53], [112.5, -0.75], [112.2, -0.63], [112.03, -1.03], [111.5, -1.25], [110.97, -1.03], [110.82, -0.68], [110.75, -0.65], [110.5, -0.75], [109.97, -0.53], [109.75, 0.0], [109.85, 0.25], [109.75, 0.5]]]]}, "2025-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.75, 0.5], [109.85, 0.75], [109.75, 1.0], [109.97, 1.53], [110.5, 1.75], [110.75, 1.65], [110.88, 1.7], [110.75, 2.0], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.25, 2.5], [112.15, 2.25], [112.18, 2.18], [112.53, 2.03], [112.75, 1.5], [112.54, 1.0], [112.68, 0.68], [113.03, 0.53], [113.25, 0.0], [113.03, -0.53], [112.5, -0.75], [112.2, -0.63], [112.03, -1.03], [111.5, -1.25], [110.97, -1.03], [110.82, -0.68], [110.75, -0.65], [110.5, -0.75], [109.97, -0.53], [109.75, 0.0], [109.85, 0.25], [109.75, 0.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.7486780321913784}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2477110895041712}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.092219543457077, 26.805682043935803, 26.853118457216226, 26.83542630230943, 26.968165842692088]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.146760559082054, 27.700802103678427, 28.017036692301474, 27.656204477946005, 27.706235504150413]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0483675758746132, 1.2272832987820166, 1.2934389263251531, 1.1942164500976717, 1.3344364968161586]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2166549688680561, 1.5991048568726, 1.6989434008408466, 1.5584249320012304, 1.7486780321913784]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4235953799746806, 1.6665872215709476, 1.7280583025520853, 1.5383431299554293, 1.7440839252182272]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6752998908850716, 2.352134962118786, 2.1542710258056275, 1.989672750221465, 2.251592202228429]}}