{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:09.610881", "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-Sep-18_to_2024-Sep-22_42.0_3.0"}, "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": 2024090001816}, "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 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 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": 114193.04127526021}, "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", "Somalia"]}, "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": 3.0}, "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": 42.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [41.82, 4.18], [41.97, 4.53], [42.5, 4.75], [42.8, 4.62], [42.97, 5.03], [43.5, 5.25], [43.75, 5.15], [44.0, 5.25], [44.5, 5.04], [45.0, 5.25], [45.25, 5.15], [45.5, 5.25], [45.75, 5.15], [46.0, 5.25], [46.53, 5.03], [46.75, 4.5], [46.53, 3.97], [46.18, 3.82], [46.03, 3.47], [45.68, 3.32], [45.53, 2.97], [45.0, 2.75], [44.75, 2.85], [44.5, 2.75], [44.2, 2.88], [44.15, 2.75], [44.25, 2.5], [44.03, 1.97], [43.68, 1.82], [43.53, 1.47], [43.18, 1.32], [43.03, 0.97], [42.68, 0.82], [42.53, 0.47], [42.0, 0.25], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.82, 0.82], [40.47, 0.97], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0], [40.47, 2.53], [40.82, 2.68], [40.85, 2.75], [40.75, 3.0], [40.97, 3.53]]]]}}, "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": {"2024-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.35, 1.75], [41.25, 2.0], [41.35, 2.25], [41.32, 2.32], [40.97, 2.47], [40.75, 3.0], [40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [41.82, 4.18], [41.97, 4.53], [42.5, 4.75], [43.03, 4.53], [43.25, 4.0], [43.15, 3.75], [43.25, 3.5], [43.15, 3.25], [43.18, 3.18], [43.25, 3.15], [43.5, 3.25], [44.03, 3.03], [44.25, 2.5], [44.03, 1.97], [43.68, 1.82], [43.53, 1.47], [43.18, 1.32], [43.03, 0.97], [42.68, 0.82], [42.53, 0.47], [42.0, 0.25], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.75, 1.0], [40.97, 1.53], [41.32, 1.68], [41.35, 1.75]]]]}, "2024-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.25, 2.0], [41.35, 2.25], [41.32, 2.32], [40.97, 2.47], [40.75, 3.0], [40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [41.82, 4.18], [41.97, 4.53], [42.5, 4.75], [42.8, 4.62], [42.97, 5.03], [43.5, 5.25], [43.75, 5.15], [44.0, 5.25], [44.53, 5.03], [44.75, 4.5], [44.65, 4.25], [44.75, 4.0], [44.53, 3.47], [44.18, 3.32], [44.15, 3.25], [44.25, 3.0], [44.15, 2.75], [44.25, 2.5], [44.03, 1.97], [43.68, 1.82], [43.53, 1.47], [43.18, 1.32], [43.03, 0.97], [42.68, 0.82], [42.53, 0.47], [42.0, 0.25], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.75, 1.0], [40.97, 1.53], [41.32, 1.68], [41.35, 1.75], [41.25, 2.0]]], [[[45.5, 4.75], [46.03, 4.53], [46.25, 4.0], [46.03, 3.47], [45.5, 3.25], [44.97, 3.47], [44.75, 4.0], [44.97, 4.53], [45.5, 4.75]]]]}, "2024-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 2.0], [40.47, 2.53], [40.82, 2.68], [40.85, 2.75], [40.75, 3.0], [40.97, 3.53], [41.32, 3.68], [41.47, 4.03], [41.82, 4.18], [41.97, 4.53], [42.5, 4.75], [42.8, 4.62], [42.97, 5.03], [43.5, 5.25], [43.75, 5.15], [44.0, 5.25], [44.5, 5.04], [45.0, 5.25], [45.25, 5.15], [45.5, 5.25], [45.75, 5.15], [46.0, 5.25], [46.53, 5.03], [46.75, 4.5], [46.53, 3.97], [46.18, 3.82], [46.03, 3.47], [45.68, 3.32], [45.53, 2.97], [45.0, 2.75], [44.75, 2.85], [44.5, 2.75], [44.2, 2.88], [44.15, 2.75], [44.25, 2.5], [44.03, 1.97], [43.68, 1.82], [43.53, 1.47], [43.18, 1.32], [43.03, 0.97], [42.68, 0.82], [42.53, 0.47], [42.0, 0.25], [41.75, 0.35], [41.5, 0.25], [40.97, 0.47], [40.82, 0.82], [40.47, 0.97], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0]]]]}, "2024-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 2.0], [40.47, 2.53], [40.82, 2.68], [40.97, 3.03], [41.32, 3.18], [41.47, 3.53], [41.82, 3.68], [41.97, 4.03], [42.5, 4.25], [42.75, 4.15], [42.82, 4.18], [42.85, 4.25], [42.75, 4.5], [42.97, 5.03], [43.5, 5.25], [43.75, 5.15], [44.0, 5.25], [44.5, 5.04], [45.0, 5.25], [45.25, 5.15], [45.5, 5.25], [45.75, 5.15], [46.0, 5.25], [46.53, 5.03], [46.75, 4.5], [46.53, 3.97], [46.18, 3.82], [46.03, 3.47], [45.68, 3.32], [45.53, 2.97], [45.0, 2.75], [44.75, 2.85], [44.5, 2.75], [44.2, 2.88], [44.15, 2.75], [44.25, 2.5], [44.03, 1.97], [43.5, 1.75], [43.25, 1.85], [43.18, 1.82], [43.03, 1.47], [42.5, 1.25], [42.25, 1.35], [42.0, 1.25], [41.75, 1.35], [41.68, 1.32], [41.53, 0.97], [41.0, 0.75], [40.47, 0.97], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0]]]]}, "2024-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 2.0], [40.47, 2.53], [40.82, 2.68], [40.97, 3.03], [41.32, 3.18], [41.47, 3.53], [41.82, 3.68], [41.97, 4.03], [42.5, 4.25], [42.75, 4.15], [42.88, 4.2], [42.75, 4.5], [42.97, 5.03], [43.5, 5.25], [44.03, 5.03], [44.18, 4.68], [44.25, 4.65], [44.32, 4.68], [44.47, 5.03], [45.0, 5.25], [45.25, 5.15], [45.5, 5.25], [45.75, 5.15], [46.0, 5.25], [46.53, 5.03], [46.75, 4.5], [46.53, 3.97], [46.18, 3.82], [46.03, 3.47], [45.68, 3.32], [45.53, 2.97], [45.0, 2.75], [44.75, 2.85], [44.5, 2.75], [44.2, 2.88], [44.15, 2.75], [44.25, 2.5], [44.03, 1.97], [43.5, 1.75], [42.97, 1.97], [42.8, 2.38], [42.68, 2.32], [42.65, 2.25], [42.75, 2.0], [42.53, 1.47], [42.0, 1.25], [41.75, 1.35], [41.68, 1.32], [41.53, 0.97], [41.0, 0.75], [40.47, 0.97], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.5355905068965967}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0667843033202575}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.768461593927157, 28.472968135735982, 28.640427921054652, 28.533715250300304, 28.542546035304213]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.434204355875693, 30.699903106689476, 30.88156407674154, 30.065310414632165, 30.183389282226585]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0066298658756825, 1.0315716138776605, 1.1323255373098837, 1.1462225984367325, 0.9399397190507738]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2929495356575558, 1.2709161413870902, 1.3932444188374689, 1.5355905068965967, 1.16210087215444]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4646005390844878, 1.4911419257439567, 1.6145181980087722, 1.6237203998022545, 1.3745181960019588]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9192008802192173, 1.757004180760741, 1.8543660397354935, 2.347661130366321, 1.6085028318683932]}}