{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:53.951849", "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-Sep-06_to_2025-Sep-10_43.5_1.0"}, "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": 2025090001329}, "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": "September 06 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 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": 123551.68186167811}, "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": ["Somalia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["Indian Ocean"]}, "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": 1.0}, "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": 43.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "43.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[45.03, 0.97], [44.68, 0.82], [44.53, 0.47], [44.18, 0.32], [44.03, -0.03], [43.5, -0.25], [43.25, -0.15], [43.18, -0.18], [43.15, -0.25], [43.25, -0.5], [43.03, -1.03], [42.5, -1.25], [41.97, -1.03], [41.82, -0.68], [41.47, -0.53], [41.25, 0.0], [41.35, 0.25], [41.25, 0.5], [41.35, 0.75], [41.25, 1.0], [41.47, 1.53], [41.82, 1.68], [41.85, 1.75], [41.75, 2.0], [41.97, 2.53], [42.32, 2.68], [42.35, 2.75], [42.25, 3.0], [42.35, 3.25], [42.25, 3.5], [42.47, 4.03], [43.0, 4.25], [43.25, 4.15], [43.5, 4.25], [44.0, 4.04], [44.5, 4.25], [44.75, 4.15], [45.0, 4.25], [45.25, 4.15], [45.5, 4.25], [46.03, 4.03], [46.25, 3.5], [46.15, 3.25], [46.25, 3.0], [46.15, 2.75], [46.25, 2.5], [46.03, 1.97], [45.68, 1.82], [45.53, 1.47], [45.18, 1.32], [45.03, 0.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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"mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0322144948059693}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.201317087809286, 27.549734279087602, 27.585831197102834, 27.510460408528616, 27.56504338582363]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.513328806559286, 28.849910990397177, 28.845674133300804, 28.836455281575525, 29.062032318115257]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.7683810024825183, 1.014634338688271, 1.121027951538143, 1.0070890044978769, 1.0234841888333919]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.8750160152150102, 1.4354511315967784, 1.5333096041431986, 1.3023229739151247, 1.2538165769818193]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.186121267046017, 1.4797261829632984, 1.662872776455543, 1.5863450921990783, 1.7082428322292462]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2736622415435876, 1.9375170345054702, 2.200352600452235, 2.0658510461211117, 2.435895297326053]}}