{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:33.514652", "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": "2023-Feb-24_to_2023-Feb-28_22.5_5.0"}, "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": 2023020002468}, "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": "February 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 28 2023"}, "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": 74002.93482727699}, "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": ["Central African Republic", "Congo, The Democratic Republic of the"]}, "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": 5.0}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.0}, "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": 5.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[21.85, 4.75], [21.75, 5.0], [21.97, 5.53], [22.5, 5.75], [22.8, 5.63], [22.97, 6.03], [23.5, 6.25], [24.0, 6.04], [24.5, 6.25], [25.03, 6.03], [25.25, 5.5], [25.15, 5.25], [25.25, 5.0], [25.15, 4.75], [25.18, 4.68], [25.53, 4.53], [25.75, 4.0], [25.54, 3.5], [25.75, 3.0], [25.53, 2.47], [25.0, 2.25], [24.75, 2.35], [24.5, 2.25], [24.25, 2.35], [24.0, 2.25], [23.75, 2.35], [23.68, 2.32], [23.53, 1.97], [23.0, 1.75], [22.47, 1.97], [22.32, 2.32], [21.97, 2.47], [21.75, 3.0], [21.85, 3.25], [21.75, 3.5], [21.96, 4.0], [21.75, 4.5], [21.85, 4.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, 3.5], [21.96, 4.0], [21.75, 4.5], [21.85, 4.75], [21.75, 5.0], [21.97, 5.53], [22.5, 5.75], [23.0, 5.54], [23.5, 5.75], [23.8, 5.63], [23.97, 6.03], [24.5, 6.25], [25.03, 6.03], [25.25, 5.5], [25.15, 5.25], [25.25, 5.0], [25.15, 4.75], [25.18, 4.68], [25.53, 4.53], [25.75, 4.0], [25.54, 3.5], [25.75, 3.0], [25.53, 2.47], [25.0, 2.25], [24.75, 2.35], [24.5, 2.25], [24.25, 2.35], [24.0, 2.25], [23.75, 2.35], [23.68, 2.32], [23.53, 1.97], [23.0, 1.75], [22.47, 1.97], [22.32, 2.32], [21.97, 2.47], [21.75, 3.0], [21.85, 3.25], [21.75, 3.5]]]]}, "2023-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, 3.5], [21.96, 4.0], [21.75, 4.5], [21.85, 4.75], [21.75, 5.0], [21.97, 5.53], [22.5, 5.75], [22.8, 5.63], [22.97, 6.03], [23.5, 6.25], [24.0, 6.04], [24.5, 6.25], [25.03, 6.03], [25.25, 5.5], [25.15, 5.25], [25.25, 5.0], [25.15, 4.75], [25.18, 4.68], [25.53, 4.53], [25.75, 4.0], [25.54, 3.5], [25.75, 3.0], [25.53, 2.47], [25.0, 2.25], [24.75, 2.35], [24.5, 2.25], [24.25, 2.35], [24.0, 2.25], [23.75, 2.35], [23.68, 2.32], [23.53, 1.97], [23.0, 1.75], [22.47, 1.97], [22.32, 2.32], [21.97, 2.47], [21.75, 3.0], [21.85, 3.25], [21.75, 3.5]]]]}, "2023-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.75, 3.5], [21.96, 4.0], [21.75, 4.5], [21.85, 4.75], [21.75, 5.0], [21.97, 5.53], [22.5, 5.75], [22.8, 5.63], [22.97, 6.03], [23.5, 6.25], [24.0, 6.04], [24.5, 6.25], [25.03, 6.03], [25.25, 5.5], [25.15, 5.25], [25.25, 5.0], [25.15, 4.75], [25.18, 4.68], [25.53, 4.53], [25.75, 4.0], [25.54, 3.5], [25.75, 3.0], [25.53, 2.47], [25.0, 2.25], [24.75, 2.35], [24.5, 2.25], [24.25, 2.35], [24.0, 2.25], [23.75, 2.35], [23.68, 2.32], [23.53, 1.97], [23.0, 1.75], [22.47, 1.97], [22.32, 2.32], [21.97, 2.47], [21.75, 3.0], [21.85, 3.25], [21.75, 3.5]]]]}, "2023-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.97, 6.03], [23.5, 6.25], [24.03, 6.03], [24.25, 5.5], [24.03, 4.97], [23.5, 4.75], [23.2, 4.88], [23.03, 4.47], [22.5, 4.25], [21.97, 4.47], [21.75, 5.0], [21.97, 5.53], [22.5, 5.75], [22.8, 5.63], [22.97, 6.03]]]]}, "2023-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.97, 6.03], [23.5, 6.25], [24.03, 6.03], [24.25, 5.5], [24.03, 4.97], [23.5, 4.75], [23.2, 4.88], [23.03, 4.47], [22.5, 4.25], [21.97, 4.47], [21.75, 5.0], [21.97, 5.53], [22.5, 5.75], [22.8, 5.63], [22.97, 6.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.9957999444975485}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.831654277750663}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.499929727021026, 29.491801289940213, 29.64440264644628, 29.058172982445853, 29.117305627011206]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.0396487026714, 31.160840691870646, 31.74179065546349, 29.197690105028414, 29.138025333177836]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.727057303798149, 2.8152849240750633, 3.0509276254723567, 2.1717471052442363, 2.259578722157869]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.3280773807489936, 3.494280828060994, 3.9957999444975485, 2.237841774067249, 2.3611430850980355]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6409892837140332, 1.6888807755808084, 1.8596830571686696, 1.4533348468415066, 1.5733208268146694]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9398913533153488, 2.0279126283082443, 2.197474572457822, 1.4828506825141945, 1.6663297075652406]}}