{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:32.667417", "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-30_to_2025-Sep-07_39.5_19.0"}, "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": 2025080002978}, "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 30 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 07 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 64451.27616685883}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Red Sea"]}, "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": 19.0}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[37.88, 19.2], [37.75, 19.5], [37.97, 20.03], [38.5, 20.25], [38.75, 20.15], [39.0, 20.25], [39.5, 20.04], [40.0, 20.25], [40.5, 20.04], [41.0, 20.25], [41.53, 20.03], [41.75, 19.5], [41.65, 19.25], [41.68, 19.18], [42.03, 19.03], [42.25, 18.5], [42.15, 18.25], [42.18, 18.18], [42.53, 18.03], [42.75, 17.5], [42.53, 16.97], [42.0, 16.75], [41.75, 16.85], [41.5, 16.75], [41.25, 16.85], [41.0, 16.75], [40.47, 16.97], [40.32, 17.32], [39.97, 17.47], [39.8, 17.88], [39.5, 17.75], [39.25, 17.85], [39.0, 17.75], [38.75, 17.85], [38.5, 17.75], [38.25, 17.85], [38.0, 17.75], [37.47, 17.97], [37.25, 18.5], [37.47, 19.03], [37.88, 19.2]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.5, 18.75], [37.97, 18.97], [37.75, 19.5], [37.97, 20.03], [38.5, 20.25], [38.75, 20.15], [39.0, 20.25], [39.53, 20.03], [39.75, 19.5], [39.53, 18.97], [39.0, 18.75], [38.75, 18.85], [38.5, 18.75]]]]}, "2025-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.5, 18.75], [37.97, 18.97], [37.75, 19.5], [37.97, 20.03], [38.5, 20.25], [38.75, 20.15], [39.0, 20.25], [39.53, 20.03], [39.68, 19.68], [40.03, 19.53], [40.25, 19.0], [40.03, 18.47], [39.5, 18.25], [38.97, 18.47], [38.82, 18.82], [38.75, 18.85], [38.5, 18.75]]]]}, "2025-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.5, 18.75], [37.97, 18.97], [37.75, 19.5], [37.97, 20.03], [38.5, 20.25], [38.75, 20.15], [39.0, 20.25], [39.53, 20.03], [39.68, 19.68], [40.03, 19.53], [40.25, 19.0], [40.03, 18.47], [39.5, 18.25], [38.97, 18.47], [38.82, 18.82], [38.75, 18.85], [38.5, 18.75]]]]}, "2025-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.0, 17.75], [37.47, 17.97], [37.25, 18.5], [37.47, 19.03], [38.0, 19.25], [38.25, 19.15], [38.32, 19.18], [38.47, 19.53], [39.0, 19.75], [39.25, 19.65], 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"coordinates": [[[[38.75, 19.0], [38.97, 19.53], [39.32, 19.68], [39.47, 20.03], [40.0, 20.25], [40.5, 20.04], [41.0, 20.25], [41.53, 20.03], [41.75, 19.5], [41.65, 19.25], [41.68, 19.18], [42.03, 19.03], [42.25, 18.5], [42.15, 18.25], [42.18, 18.18], [42.53, 18.03], [42.75, 17.5], [42.53, 16.97], [42.0, 16.75], [41.75, 16.85], [41.5, 16.75], [41.25, 16.85], [41.0, 16.75], [40.47, 16.97], [40.32, 17.32], [39.97, 17.47], [39.8, 17.88], [39.5, 17.75], [38.97, 17.97], [38.75, 18.5], [38.85, 18.75], [38.75, 19.0]]]]}, "2025-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.75, 19.0], [38.97, 19.53], [39.32, 19.68], [39.47, 20.03], [40.0, 20.25], [40.5, 20.04], [41.0, 20.25], [41.53, 20.03], [41.75, 19.5], [41.65, 19.25], [41.68, 19.18], [42.03, 19.03], [42.25, 18.5], [42.03, 17.97], [41.68, 17.82], [41.65, 17.75], [41.75, 17.5], [41.53, 16.97], [41.0, 16.75], [40.47, 16.97], [40.32, 17.32], [39.97, 17.47], [39.8, 17.88], [39.5, 17.75], [38.97, 17.97], [38.75, 18.5], [38.85, 18.75], [38.75, 19.0]]]]}, "2025-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.5, 17.75], [38.97, 17.97], [38.75, 18.5], [38.97, 19.03], [39.5, 19.25], [40.03, 19.03], [40.25, 18.5], [40.03, 17.97], [39.5, 17.75]]], [[[41.0, 18.75], [40.47, 18.97], [40.25, 19.5], [40.47, 20.03], [41.0, 20.25], [41.53, 20.03], [41.75, 19.5], [41.53, 18.97], [41.0, 18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.1165274886504335}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0338250624586998}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.34296061197915, 32.63895696004232, 32.21904271443685, 33.01312747531472, 32.91286875406905, 32.7458837721083, 32.70890070597335, 32.51612077370669, 33.26136932373049]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.50393066406252, 32.89245630900069, 32.292122141520224, 35.75037790934249, 35.65844370524093, 36.33498153686526, 34.7183662414551, 34.631167348225915, 34.22686411539718]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.7560751030964639, 1.104301174970999, 0.739662567277359, 1.0839483742191633, 1.0699075601157126, 1.0190043733603034, 1.094694819682264, 0.9986987647957772, 1.0076387905523632]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.8571738747594964, 1.3094609852615804, 0.7688830390103476, 1.4555360130631811, 1.608745732909199, 2.1165274886504335, 1.5698270346057939, 1.5151304782460215, 1.1018920894651387]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5969655476133, 2.2535748890775085, 1.446859510489703, 1.8523375588839253, 1.8647262257836723, 1.7513904212794746, 1.991324691407882, 1.7812206672933557, 1.5592574490719762]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7677536762926298, 2.566177221464816, 1.5687734912374949, 2.183935982744285, 2.3188772210431043, 2.1628449345323526, 2.7820362226662967, 2.251435561297234, 1.6330082217920612]}}