{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:25.301738", "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-Aug-21_to_2025-Aug-26_52.5_25.0"}, "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": 2025080002353}, "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": "August 21 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 26 2025"}, "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": 89161.40622433208}, "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": ["Bahrain", "Qatar", "Saudi Arabia", "United Arab Emirates"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": 25.0}, "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": 52.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "52.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[54.03, 25.53], [54.25, 25.0], [54.15, 24.75], [54.25, 24.5], [54.03, 23.97], [53.5, 23.75], [53.0, 23.96], [52.68, 23.82], [52.53, 23.47], [52.0, 23.25], [51.75, 23.35], [51.5, 23.25], [51.25, 23.35], [51.0, 23.25], [50.47, 23.47], [50.25, 24.0], [50.47, 24.53], [50.82, 24.68], [50.85, 24.75], [50.8, 24.88], [50.5, 24.75], [49.97, 24.97], [49.75, 25.5], [49.85, 25.75], [49.82, 25.82], [49.47, 25.97], [49.25, 26.5], [49.47, 27.03], [49.82, 27.18], [49.97, 27.53], [50.32, 27.68], [50.47, 28.03], [51.0, 28.25], [51.53, 28.03], [51.68, 27.68], [52.03, 27.53], [52.18, 27.18], [52.25, 27.15], [52.5, 27.25], [53.03, 27.03], [53.18, 26.68], [53.53, 26.53], [53.75, 26.0], [53.63, 25.7], [54.03, 25.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia", "Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.75, 25.0], [51.97, 25.53], [52.5, 25.75], [52.75, 25.65], [53.0, 25.75], [53.53, 25.53], [53.75, 25.0], [53.53, 24.47], [53.18, 24.32], [53.03, 23.97], [52.5, 23.75], [51.97, 23.97], [51.75, 24.5], [51.85, 24.75], [51.75, 25.0]]]]}, "2025-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.75, 24.5], [50.97, 25.03], [51.32, 25.18], [51.47, 25.53], [52.0, 25.75], [52.25, 25.65], [52.5, 25.75], [52.75, 25.65], [53.0, 25.75], [53.53, 25.53], [53.75, 25.0], [53.53, 24.47], [53.18, 24.32], [53.03, 23.97], [52.68, 23.82], [52.53, 23.47], [52.0, 23.25], [51.75, 23.35], [51.5, 23.25], [50.97, 23.47], [50.75, 24.0], [50.85, 24.25], [50.75, 24.5]]]]}, "2025-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.47, 25.97], [49.25, 26.5], [49.47, 27.03], [49.82, 27.18], [49.97, 27.53], [50.32, 27.68], [50.47, 28.03], [51.0, 28.25], [51.53, 28.03], [51.68, 27.68], [52.03, 27.53], [52.18, 27.18], [52.25, 27.15], [52.5, 27.25], [53.03, 27.03], [53.18, 26.68], [53.53, 26.53], [53.75, 26.0], [53.54, 25.5], [53.75, 25.0], [53.53, 24.47], [53.18, 24.32], [53.03, 23.97], [52.68, 23.82], [52.53, 23.47], [52.0, 23.25], [51.75, 23.35], [51.5, 23.25], [51.25, 23.35], [51.0, 23.25], [50.47, 23.47], [50.25, 24.0], [50.47, 24.53], [50.82, 24.68], [50.85, 24.75], [50.8, 24.88], [50.5, 24.75], [49.97, 24.97], [49.75, 25.5], [49.85, 25.75], [49.82, 25.82], [49.47, 25.97]]]]}, "2025-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.47, 25.97], [49.25, 26.5], [49.47, 27.03], [49.82, 27.18], [49.97, 27.53], [50.32, 27.68], [50.47, 28.03], [51.0, 28.25], [51.53, 28.03], [51.68, 27.68], [52.03, 27.53], [52.18, 27.18], [52.25, 27.15], [52.5, 27.25], [53.03, 27.03], [53.18, 26.68], [53.53, 26.53], [53.75, 26.0], [53.63, 25.7], [54.03, 25.53], [54.25, 25.0], [54.15, 24.75], [54.25, 24.5], [54.03, 23.97], [53.5, 23.75], [53.0, 23.96], [52.68, 23.82], [52.53, 23.47], [52.0, 23.25], [51.75, 23.35], [51.5, 23.25], [51.25, 23.35], [51.0, 23.25], [50.47, 23.47], [50.25, 24.0], [50.47, 24.53], [50.82, 24.68], [50.85, 24.75], [50.8, 24.88], [50.5, 24.75], [49.97, 24.97], [49.75, 25.5], [49.85, 25.75], [49.82, 25.82], [49.47, 25.97]]]]}, "2025-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.47, 25.97], [49.25, 26.5], [49.47, 27.03], [49.82, 27.18], [49.97, 27.53], [50.32, 27.68], [50.47, 28.03], [51.0, 28.25], [51.53, 28.03], [51.68, 27.68], [52.03, 27.53], [52.18, 27.18], [52.25, 27.15], [52.5, 27.25], [53.03, 27.03], [53.18, 26.68], [53.53, 26.53], [53.75, 26.0], [53.63, 25.7], [54.03, 25.53], [54.25, 25.0], [54.15, 24.75], [54.25, 24.5], [54.03, 23.97], [53.5, 23.75], [53.0, 23.96], [52.68, 23.82], [52.53, 23.47], [52.0, 23.25], [51.75, 23.35], [51.5, 23.25], [51.25, 23.35], [51.0, 23.25], [50.47, 23.47], [50.25, 24.0], [50.47, 24.53], [50.82, 24.68], [50.85, 24.75], [50.8, 24.88], [50.5, 24.75], [49.97, 24.97], [49.75, 25.5], [49.85, 25.75], [49.82, 25.82], [49.47, 25.97]]]]}, "2025-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.97, 25.03], [51.5, 25.25], [51.8, 25.13], [51.97, 25.53], [52.5, 25.75], [52.75, 25.65], [53.0, 25.75], [53.25, 25.65], [53.5, 25.75], [54.03, 25.53], [54.25, 25.0], [54.15, 24.75], [54.25, 24.5], [54.03, 23.97], [53.5, 23.75], [52.97, 23.97], [52.82, 24.32], [52.75, 24.35], [52.5, 24.25], [52.2, 24.38], [52.03, 23.97], [51.68, 23.82], [51.53, 23.47], [51.0, 23.25], [50.47, 23.47], [50.25, 24.0], [50.47, 24.53], [50.82, 24.68], [50.97, 25.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.712612615068224}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6208033705666587}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.20614395141604, 35.75366363525393, 35.54134351942275, 35.619390106201195, 35.43935419718423, 35.47856462266708]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.352058664957724, 38.025178527832054, 38.192534383138025, 38.500246938069665, 38.70666529337569, 37.75429433186849]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4233766230162814, 1.5791415306471919, 1.6417447740172615, 1.7383938765814282, 1.5852268989501805, 1.2329506635239038]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.457989033525962, 2.617761274853649, 2.341554804574457, 2.6258404128705592, 2.712612615068224, 1.5447338364143661]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5511673924185632, 1.5473342882405305, 1.8848906452615846, 1.9979378284530986, 1.7832815008681762, 1.2945183705330388]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6046442992417873, 1.8276329075619162, 2.6502061328542963, 2.496813921610134, 2.2808165329629753, 1.4481929440294827]}}