{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:38.076281", "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": "2024-Apr-29_to_2024-May-03_39.5_3.5"}, "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": 2024040002077}, "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": "April 29 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2024"}, "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": 52457.84131388107}, "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": ["Ethiopia", "Kenya"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": []}, "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": 3.5}, "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": 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": 38.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[37.85, 3.75], [37.75, 4.0], [37.97, 4.53], [38.5, 4.75], [38.75, 4.65], [39.0, 4.75], [39.25, 4.65], [39.5, 4.75], [40.0, 4.54], [40.5, 4.75], [41.03, 4.53], [41.18, 4.18], [41.53, 4.03], [41.75, 3.5], [41.53, 2.97], [41.0, 2.75], [40.75, 2.85], [40.68, 2.82], [40.53, 2.47], [40.18, 2.32], [40.03, 1.97], [39.5, 1.75], [39.25, 1.85], [39.0, 1.75], [38.75, 1.85], [38.5, 1.75], [37.97, 1.97], [37.75, 2.5], [37.85, 2.75], [37.75, 3.0], [37.85, 3.25], [37.75, 3.5], [37.85, 3.75]]]]}}, "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": {"2024-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 3.5], [37.85, 3.75], [37.75, 4.0], [37.97, 4.53], [38.5, 4.75], [38.75, 4.65], [39.0, 4.75], [39.25, 4.65], [39.5, 4.75], [40.03, 4.53], [40.25, 4.0], [40.15, 3.75], [40.25, 3.5], [40.03, 2.97], [39.68, 2.82], [39.53, 2.47], [39.0, 2.25], [38.75, 2.35], [38.5, 2.25], [37.97, 2.47], [37.75, 3.0], [37.85, 3.25], [37.75, 3.5]]]]}, "2024-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 3.0], [37.85, 3.25], [37.75, 3.5], [37.85, 3.75], [37.75, 4.0], [37.97, 4.53], [38.5, 4.75], [38.75, 4.65], [39.0, 4.75], [39.25, 4.65], [39.5, 4.75], [40.0, 4.54], [40.5, 4.75], [41.03, 4.53], [41.18, 4.18], [41.53, 4.03], [41.75, 3.5], [41.53, 2.97], [41.0, 2.75], [40.75, 2.85], [40.68, 2.82], [40.53, 2.47], [40.18, 2.32], [40.03, 1.97], [39.5, 1.75], [39.25, 1.85], [39.0, 1.75], [38.75, 1.85], [38.5, 1.75], [37.97, 1.97], [37.75, 2.5], [37.85, 2.75], [37.75, 3.0]]]]}, "2024-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 3.0], [37.85, 3.25], [37.75, 3.5], [37.85, 3.75], [37.75, 4.0], [37.97, 4.53], [38.5, 4.75], [38.75, 4.65], [39.0, 4.75], [39.25, 4.65], [39.5, 4.75], [40.0, 4.54], [40.5, 4.75], [41.03, 4.53], [41.18, 4.18], [41.53, 4.03], [41.75, 3.5], [41.53, 2.97], [41.0, 2.75], [40.75, 2.85], [40.68, 2.82], [40.53, 2.47], [40.18, 2.32], [40.03, 1.97], [39.5, 1.75], [39.25, 1.85], [39.0, 1.75], [38.75, 1.85], [38.5, 1.75], [37.97, 1.97], [37.75, 2.5], [37.85, 2.75], [37.75, 3.0]]]]}, "2024-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 3.0], [37.85, 3.25], [37.75, 3.5], [37.97, 4.03], [38.32, 4.18], [38.47, 4.53], [39.0, 4.75], [39.25, 4.65], [39.5, 4.75], [40.0, 4.54], [40.5, 4.75], [41.03, 4.53], [41.18, 4.18], [41.53, 4.03], [41.75, 3.5], [41.53, 2.97], [41.0, 2.75], [40.75, 2.85], [40.68, 2.82], [40.53, 2.47], [40.18, 2.32], [40.03, 1.97], [39.5, 1.75], [39.25, 1.85], [39.0, 1.75], [38.75, 1.85], [38.5, 1.75], [37.97, 1.97], [37.75, 2.5], [37.85, 2.75], [37.75, 3.0]]]]}, "2024-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, 4.53], [39.0, 4.75], [39.25, 4.65], [39.5, 4.75], [40.0, 4.54], [40.5, 4.75], [41.03, 4.53], [41.18, 4.18], [41.53, 4.03], [41.75, 3.5], [41.53, 2.97], [41.0, 2.75], [40.75, 2.85], [40.68, 2.82], [40.53, 2.47], [40.18, 2.32], [40.03, 1.97], [39.5, 1.75], [38.97, 1.97], [38.75, 2.5], [38.85, 2.75], [38.82, 2.82], [38.75, 2.85], [38.5, 2.75], [37.97, 2.97], [37.75, 3.5], [37.97, 4.03], [38.32, 4.18], [38.47, 4.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.7056896620428574}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.96385359268914}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.963995595939082, 26.708038033350647, 26.750960988083875, 26.62972872964707, 25.841634967097377]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.94501077790727, 29.454251410966094, 29.806993743224552, 29.82842728017846, 28.91540695226405]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6743745627328863, 2.2014040812545925, 2.237227970419286, 1.823673482500638, 1.6199361989925478]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.0589081247893546, 2.952216593456626, 3.7056896620428574, 2.818243730938093, 2.2043439179154234]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8381487399069831, 2.3298870803698253, 2.3359083093989352, 1.9313905077512303, 1.9407083146765063]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1600371126121636, 3.467967559794562, 3.1190797227732823, 2.4998435570543083, 2.361618306342004]}}