{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:04.418325", "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-Mar-11_to_2025-Mar-18_37.0_1.5"}, "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": 2025030001615}, "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": "March 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 18 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 129731.95613622293}, "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": ["Kenya"]}, "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": []}, "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": 1.5}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 39.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.0}, "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": [[[[39.25, 1.0], [39.15, 0.75], [39.25, 0.5], [39.03, -0.03], [38.68, -0.18], [38.53, -0.53], [38.0, -0.75], [37.5, -0.54], [37.0, -0.75], [36.47, -0.53], [36.25, 0.0], [36.35, 0.25], [36.25, 0.5], [36.35, 0.75], [36.32, 0.82], [36.25, 0.85], [36.18, 0.82], [36.03, 0.47], [35.5, 0.25], [34.97, 0.47], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5], [34.35, 1.75], [34.25, 2.0], [34.47, 2.53], [35.0, 2.75], [35.5, 2.54], [35.82, 2.68], [35.85, 2.75], [35.75, 3.0], [35.85, 3.25], [35.82, 3.32], [35.47, 3.47], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.5, 4.54], [37.0, 4.75], [37.53, 4.53], [37.7, 4.12], [38.0, 4.25], [38.53, 4.03], [38.75, 3.5], [38.65, 3.25], [38.68, 3.18], [38.75, 3.15], [39.0, 3.25], [39.53, 3.03], [39.75, 2.5], [39.65, 2.25], [39.75, 2.0], [39.53, 1.47], [39.18, 1.32], [39.15, 1.25], [39.25, 1.0]]]]}}, "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": {"2025-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 2.03], [37.0, 2.25], [37.53, 2.03], [37.75, 1.5], [37.53, 0.97], [37.0, 0.75], [36.47, 0.97], [36.25, 1.5], [36.47, 2.03]]]]}, "2025-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 2.03], [37.0, 2.25], [37.53, 2.03], [37.75, 1.5], [37.53, 0.97], [37.0, 0.75], [36.47, 0.97], [36.25, 1.5], [36.47, 2.03]]]]}, "2025-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 0.97], [36.25, 1.5], [36.47, 2.03], [36.82, 2.18], [36.97, 2.53], [37.5, 2.75], [37.75, 2.65], [38.0, 2.75], [38.53, 2.53], [38.75, 2.0], [38.53, 1.47], [38.18, 1.32], [38.15, 1.25], [38.25, 1.0], [38.13, 0.7], [38.53, 0.53], [38.75, 0.0], [38.53, -0.53], [38.0, -0.75], [37.47, -0.53], [37.25, 0.0], [37.38, 0.3], [36.97, 0.47], [36.82, 0.82], [36.47, 0.97]]]]}, "2025-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 2.0], [34.47, 2.53], [35.0, 2.75], [35.5, 2.54], [35.82, 2.68], [35.85, 2.75], [35.75, 3.0], [35.85, 3.25], [35.82, 3.32], [35.47, 3.47], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.5, 4.54], [37.0, 4.75], [37.53, 4.53], [37.7, 4.12], [38.0, 4.25], [38.53, 4.03], [38.75, 3.5], [38.65, 3.25], [38.68, 3.18], [38.75, 3.15], [39.0, 3.25], [39.53, 3.03], [39.75, 2.5], [39.65, 2.25], [39.75, 2.0], [39.53, 1.47], [39.18, 1.32], [39.15, 1.25], [39.25, 1.0], [39.15, 0.75], [39.25, 0.5], [39.03, -0.03], [38.68, -0.18], [38.53, -0.53], [38.0, -0.75], [37.5, -0.54], [37.0, -0.75], [36.47, -0.53], [36.25, 0.0], [36.35, 0.25], [36.25, 0.5], [36.35, 0.75], [36.32, 0.82], [36.25, 0.85], [36.18, 0.82], [36.03, 0.47], [35.5, 0.25], [34.97, 0.47], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5], [34.35, 1.75], [34.25, 2.0]]]]}, "2025-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 2.0], [34.47, 2.53], [35.0, 2.75], [35.5, 2.54], [35.82, 2.68], [35.85, 2.75], [35.75, 3.0], [35.85, 3.25], [35.82, 3.32], [35.47, 3.47], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.5, 4.54], [37.0, 4.75], [37.53, 4.53], [37.7, 4.12], [38.0, 4.25], [38.53, 4.03], [38.75, 3.5], [38.65, 3.25], [38.68, 3.18], [38.75, 3.15], [39.0, 3.25], [39.53, 3.03], [39.75, 2.5], [39.65, 2.25], [39.75, 2.0], [39.53, 1.47], [39.18, 1.32], [39.15, 1.25], [39.25, 1.0], [39.15, 0.75], [39.25, 0.5], [39.03, -0.03], [38.68, -0.18], [38.53, -0.53], [38.0, -0.75], [37.5, -0.54], [37.0, -0.75], [36.47, -0.53], [36.25, 0.0], [36.35, 0.25], [36.25, 0.5], [36.35, 0.75], [36.32, 0.82], [36.25, 0.85], [36.18, 0.82], [36.03, 0.47], [35.5, 0.25], [34.97, 0.47], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5], [34.35, 1.75], [34.25, 2.0]]]]}, "2025-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 2.0], [34.47, 2.53], [35.0, 2.75], [35.5, 2.54], [35.82, 2.68], [35.85, 2.75], [35.75, 3.0], [35.85, 3.25], [35.82, 3.32], [35.47, 3.47], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.5, 4.54], [37.0, 4.75], [37.53, 4.53], [37.7, 4.12], [38.0, 4.25], [38.53, 4.03], [38.75, 3.5], [38.65, 3.25], [38.68, 3.18], [38.75, 3.15], [39.0, 3.25], [39.53, 3.03], [39.75, 2.5], [39.65, 2.25], [39.75, 2.0], [39.53, 1.47], [39.18, 1.32], [39.15, 1.25], [39.25, 1.0], [39.15, 0.75], [39.25, 0.5], [39.03, -0.03], [38.68, -0.18], [38.53, -0.53], [38.0, -0.75], [37.5, -0.54], [37.0, -0.75], [36.47, -0.53], [36.25, 0.0], [36.35, 0.25], [36.25, 0.5], [36.35, 0.75], [36.32, 0.82], [36.25, 0.85], [36.18, 0.82], [36.03, 0.47], [35.5, 0.25], [34.97, 0.47], [34.82, 0.82], [34.47, 0.97], [34.25, 1.5], [34.35, 1.75], [34.25, 2.0]]]]}, "2025-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, 1.0], [36.85, 1.25], [36.75, 1.5], [36.85, 1.75], [36.75, 2.0], [36.97, 2.53], [37.5, 2.75], [38.03, 2.53], [38.18, 2.18], [38.53, 2.03], [38.68, 1.68], [39.03, 1.53], [39.25, 1.0], [39.15, 0.75], [39.25, 0.5], [39.03, -0.03], [38.5, -0.25], [38.25, -0.15], [38.0, -0.25], [37.75, -0.15], [37.5, -0.25], [36.97, -0.03], [36.75, 0.5], [36.85, 0.75], [36.75, 1.0]]]]}, "2025-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.75, 1.0], [36.85, 1.25], [36.75, 1.5], [36.85, 1.75], [36.75, 2.0], [36.97, 2.53], [37.5, 2.75], [38.03, 2.53], [38.18, 2.18], [38.53, 2.03], [38.68, 1.68], [39.03, 1.53], [39.25, 1.0], [39.15, 0.75], [39.25, 0.5], [39.03, -0.03], [38.5, -0.25], [38.0, -0.04], [37.5, -0.25], [36.97, -0.03], [36.75, 0.5], [36.85, 0.75], [36.75, 1.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.044321840878467}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3165471894397824}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.31309534708663, 26.28043899536135, 28.022819349500878, 29.853531017000705, 30.4226602342394, 29.848724801199808, 28.65699242485897, 29.39369354248049]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.31309534708663, 26.28043899536135, 30.568215942382835, 34.0201240539551, 35.66567509969076, 35.103311157226585, 30.696407572428427, 31.479366556803427]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2457156135613445, 1.2203039949060326, 1.3418524658432223, 2.2871315362628613, 2.836628127286577, 2.29873747155511, 1.4624462979834207, 1.7968243557048282]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2457156135613445, 1.2203039949060326, 1.7353608726370453, 3.46184655155605, 4.044321840878467, 3.6093291173419857, 1.7747290876758939, 2.118075181443487]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1952000132115226, 1.224354021895023, 1.2836736340177162, 1.9484845445770365, 2.3446679875720555, 1.8096847806587542, 1.2489687979401478, 1.4368189126974702]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1952000132115226, 1.224354021895023, 1.5702959121037317, 3.453550487129055, 3.813379209640366, 2.635503882188312, 1.5250904916330177, 1.7377262092446006]}}