{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:41.012068", "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": "2026-Feb-28_to_2026-Mar-03_48.5_18.0"}, "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": 2026020002731}, "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": "February 28 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 88587.46694536497}, "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": ["Saudi Arabia", "Yemen"]}, "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": 18.0}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[44.75, 16.5], [44.85, 16.75], [44.75, 17.0], [44.97, 17.53], [45.5, 17.75], [45.75, 17.65], [45.82, 17.68], [45.85, 17.75], [45.75, 18.0], [45.97, 18.53], [46.5, 18.75], [46.75, 18.65], [47.0, 18.75], [47.53, 18.53], [47.68, 18.18], [47.75, 18.15], [47.82, 18.18], [47.85, 18.25], [47.75, 18.5], [47.85, 18.75], [47.75, 19.0], [47.97, 19.53], [48.32, 19.68], [48.47, 20.03], [49.0, 20.25], [49.25, 20.15], [49.5, 20.25], [50.03, 20.03], [50.25, 19.5], [50.03, 18.97], [49.68, 18.82], [49.65, 18.75], [49.75, 18.5], [49.53, 17.97], [49.18, 17.82], [49.15, 17.75], [49.25, 17.5], [49.03, 16.97], [48.68, 16.82], [48.53, 16.47], [48.18, 16.32], [48.03, 15.97], [47.5, 15.75], [47.0, 15.96], [46.68, 15.82], [46.65, 15.75], [46.75, 15.5], [46.65, 15.25], [46.75, 15.0], [46.53, 14.47], [46.0, 14.25], [45.75, 14.35], [45.5, 14.25], [45.25, 14.35], [45.0, 14.25], [44.47, 14.47], [44.25, 15.0], [44.47, 15.53], [44.82, 15.68], [44.85, 15.75], [44.75, 16.0], [44.85, 16.25], [44.75, 16.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.75, 17.0], [44.97, 17.53], [45.5, 17.75], [45.75, 17.65], [45.82, 17.68], [45.85, 17.75], [45.75, 18.0], [45.97, 18.53], [46.5, 18.75], [46.75, 18.65], [47.0, 18.75], [47.53, 18.53], [47.68, 18.18], [47.75, 18.15], [47.82, 18.18], [47.85, 18.25], [47.75, 18.5], [47.85, 18.75], [47.75, 19.0], [47.97, 19.53], [48.5, 19.75], [49.03, 19.53], [49.25, 19.0], [49.15, 18.75], [49.25, 18.5], [49.15, 18.25], [49.25, 18.0], [49.03, 17.47], [48.68, 17.32], [48.53, 16.97], [48.0, 16.75], [47.75, 16.85], [47.68, 16.82], [47.53, 16.47], [47.0, 16.25], [46.75, 16.35], [46.5, 16.25], [46.25, 16.35], [46.18, 16.32], [46.03, 15.97], [45.5, 15.75], [44.97, 15.97], [44.75, 16.5], [44.85, 16.75], [44.75, 17.0]]]]}, "2026-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, 15.75], [44.75, 16.0], [44.85, 16.25], [44.75, 16.5], [44.85, 16.75], [44.75, 17.0], [44.97, 17.53], [45.5, 17.75], [45.75, 17.65], [45.82, 17.68], [45.85, 17.75], [45.75, 18.0], [45.97, 18.53], [46.5, 18.75], [46.75, 18.65], [47.0, 18.75], [47.53, 18.53], [47.68, 18.18], [47.75, 18.15], [47.82, 18.18], [47.85, 18.25], [47.75, 18.5], [47.85, 18.75], [47.75, 19.0], [47.97, 19.53], [48.32, 19.68], [48.47, 20.03], [49.0, 20.25], [49.25, 20.15], [49.5, 20.25], [50.03, 20.03], [50.25, 19.5], [50.03, 18.97], [49.68, 18.82], [49.65, 18.75], [49.75, 18.5], [49.53, 17.97], [49.18, 17.82], [49.15, 17.75], [49.25, 17.5], [49.03, 16.97], [48.68, 16.82], [48.53, 16.47], [48.18, 16.32], [48.03, 15.97], [47.5, 15.75], [47.0, 15.96], [46.68, 15.82], [46.65, 15.75], [46.75, 15.5], [46.65, 15.25], [46.75, 15.0], [46.53, 14.47], [46.0, 14.25], [45.75, 14.35], [45.5, 14.25], [45.25, 14.35], [45.0, 14.25], [44.47, 14.47], [44.25, 15.0], [44.47, 15.53], [44.82, 15.68], [44.85, 15.75]]]]}, "2026-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, 15.75], [44.75, 16.0], [44.85, 16.25], [44.75, 16.5], [44.85, 16.75], [44.75, 17.0], [44.97, 17.53], [45.5, 17.75], [45.75, 17.65], [45.82, 17.68], [45.85, 17.75], [45.75, 18.0], [45.97, 18.53], [46.5, 18.75], [46.75, 18.65], [47.0, 18.75], [47.53, 18.53], [47.68, 18.18], [47.75, 18.15], [47.82, 18.18], [47.85, 18.25], [47.75, 18.5], [47.85, 18.75], [47.75, 19.0], [47.97, 19.53], [48.32, 19.68], [48.47, 20.03], [49.0, 20.25], [49.25, 20.15], [49.5, 20.25], [50.03, 20.03], [50.25, 19.5], [50.03, 18.97], [49.68, 18.82], [49.65, 18.75], [49.75, 18.5], [49.53, 17.97], [49.18, 17.82], [49.15, 17.75], [49.25, 17.5], [49.03, 16.97], [48.68, 16.82], [48.53, 16.47], [48.18, 16.32], [48.03, 15.97], [47.5, 15.75], [47.0, 15.96], [46.68, 15.82], [46.65, 15.75], [46.75, 15.5], [46.65, 15.25], [46.75, 15.0], [46.53, 14.47], [46.0, 14.25], [45.75, 14.35], [45.5, 14.25], [45.25, 14.35], [45.0, 14.25], [44.47, 14.47], [44.25, 15.0], [44.47, 15.53], [44.82, 15.68], [44.85, 15.75]]]]}, "2026-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, 15.75], [44.75, 16.0], [44.85, 16.25], [44.75, 16.5], [44.97, 17.03], [45.5, 17.25], [45.75, 17.15], [45.82, 17.18], [45.97, 17.53], [46.5, 17.75], [47.03, 17.53], [47.2, 17.13], [47.32, 17.18], [47.35, 17.25], [47.25, 17.5], [47.47, 18.03], [47.82, 18.18], [47.97, 18.53], [48.32, 18.68], [48.35, 18.75], [48.25, 19.0], [48.35, 19.25], [48.25, 19.5], [48.47, 20.03], [49.0, 20.25], [49.25, 20.15], [49.5, 20.25], [50.03, 20.03], [50.25, 19.5], [50.03, 18.97], [49.68, 18.82], [49.65, 18.75], [49.75, 18.5], [49.53, 17.97], [49.18, 17.82], [49.15, 17.75], [49.25, 17.5], [49.03, 16.97], [48.68, 16.82], [48.53, 16.47], [48.18, 16.32], [48.03, 15.97], [47.5, 15.75], [47.0, 15.96], [46.68, 15.82], [46.65, 15.75], [46.75, 15.5], [46.65, 15.25], [46.75, 15.0], [46.53, 14.47], [46.0, 14.25], [45.75, 14.35], [45.5, 14.25], [45.25, 14.35], [45.0, 14.25], [44.47, 14.47], [44.25, 15.0], [44.47, 15.53], [44.82, 15.68], [44.85, 15.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.407804174506225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.482988088800644}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.654808480399026, 27.898075951470275, 27.825997416178495, 27.639828745524085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.10352732340499, 30.307063039143884, 29.837927754720056, 29.36302210489913]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.4341982460415466, 4.6248532497939205, 4.51570252048268, 4.255271589719041]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.875450713412874, 6.407804174506225, 5.816870351316538, 5.037158977726563]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3256895640970683, 1.4558078276056332, 1.445621394037024, 1.4572393167161695]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.518396762845591, 1.9518946465671583, 1.7378035675391497, 1.6425188164160838]}}