{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:18.989777", "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": "2022-Jan-31_to_2022-Feb-06_15.5_-15.5"}, "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": 2022010002916}, "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": "January 31 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 06 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 110129.67227177882}, "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": ["Angola", "Namibia"]}, "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": -15.5}, "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": 15.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[13.47, -13.97], [14.0, -13.75], [14.25, -13.85], [14.32, -13.82], [14.47, -13.47], [15.0, -13.25], [15.25, -13.35], [15.5, -13.25], [16.03, -13.47], [16.18, -13.82], [16.25, -13.85], [16.5, -13.75], [17.03, -13.97], [17.25, -14.5], [17.15, -14.75], [17.25, -15.0], [17.15, -15.25], [17.25, -15.5], [17.15, -15.75], [17.25, -16.0], [17.03, -16.53], [16.68, -16.68], [16.65, -16.75], [16.75, -17.0], [16.53, -17.53], [16.18, -17.68], [16.03, -18.03], [15.5, -18.25], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03], [14.32, -17.68], [13.97, -17.53], [13.75, -17.0], [13.85, -16.75], [13.82, -16.68], [13.47, -16.53], [13.25, -16.0], [13.35, -15.75], [13.32, -15.68], [12.97, -15.53], [12.75, -15.0], [12.97, -14.47], [13.32, -14.32], [13.47, -13.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, -15.53], [13.25, -15.0], [13.47, -14.47], [14.0, -14.25], [14.25, -14.35], [14.5, -14.25], [14.75, -14.35], [15.0, -14.25], [15.25, -14.35], [15.5, -14.25], [16.03, -14.47], [16.25, -15.0], [16.15, -15.25], [16.25, -15.5], [16.15, -15.75], [16.25, -16.0], [16.15, -16.25], [16.25, -16.5], [16.03, -17.03], [15.5, -17.25], [14.97, -17.03], [14.82, -16.68], [14.47, -16.53], [14.32, -16.18], [13.97, -16.03], [13.82, -15.68], [13.47, -15.53]]]]}, "2022-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -15.53], [12.75, -15.0], [12.97, -14.47], [13.32, -14.32], [13.47, -13.97], [14.0, -13.75], [14.25, -13.85], [14.32, -13.82], [14.47, -13.47], [15.0, -13.25], [15.25, -13.35], [15.5, -13.25], [16.03, -13.47], [16.18, -13.82], [16.25, -13.85], [16.5, -13.75], [17.03, -13.97], [17.25, -14.5], [17.15, -14.75], [17.25, -15.0], [17.15, -15.25], [17.25, -15.5], [17.15, -15.75], [17.25, -16.0], [17.03, -16.53], [16.68, -16.68], [16.65, -16.75], [16.75, -17.0], [16.53, -17.53], [16.18, -17.68], [16.03, -18.03], [15.5, -18.25], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03], [14.32, -17.68], [13.97, -17.53], [13.75, -17.0], [13.88, -16.7], [13.47, -16.53], [13.25, -16.0], [13.35, -15.75], [13.32, -15.68], [12.97, -15.53]]]]}, "2022-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -15.53], [12.75, -15.0], [12.97, -14.47], [13.32, -14.32], [13.47, -13.97], [14.0, -13.75], [14.25, -13.85], [14.32, -13.82], [14.47, -13.47], [15.0, -13.25], [15.25, -13.35], [15.5, -13.25], [16.03, -13.47], [16.18, -13.82], [16.25, -13.85], [16.5, -13.75], [17.03, -13.97], [17.25, -14.5], [17.15, -14.75], [17.25, -15.0], [17.15, -15.25], [17.25, -15.5], [17.15, -15.75], [17.25, -16.0], [17.03, -16.53], [16.68, -16.68], [16.65, -16.75], [16.75, -17.0], [16.53, -17.53], [16.18, -17.68], [16.03, -18.03], [15.5, -18.25], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03], [14.32, -17.68], [13.97, -17.53], [13.75, -17.0], [13.85, -16.75], [13.82, -16.68], [13.47, -16.53], [13.25, -16.0], [13.35, -15.75], [13.32, -15.68], [12.97, -15.53]]]]}, "2022-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -15.53], [12.75, -15.0], [12.97, -14.47], [13.32, -14.32], [13.47, -13.97], [14.0, -13.75], [14.25, -13.85], [14.32, -13.82], [14.47, -13.47], [15.0, -13.25], [15.25, -13.35], [15.5, -13.25], [16.03, -13.47], [16.18, -13.82], [16.25, -13.85], [16.5, -13.75], [17.03, -13.97], [17.25, -14.5], [17.15, -14.75], [17.25, -15.0], [17.15, -15.25], [17.25, -15.5], [17.15, -15.75], [17.25, -16.0], [17.03, -16.53], [16.68, -16.68], [16.65, -16.75], [16.75, -17.0], [16.53, -17.53], [16.18, -17.68], [16.03, -18.03], [15.5, -18.25], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03], [14.32, -17.68], [13.97, -17.53], [13.75, -17.0], [13.85, -16.75], [13.82, -16.68], [13.47, -16.53], [13.25, -16.0], [13.35, -15.75], [13.32, -15.68], [12.97, -15.53]]]]}, "2022-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, -15.53], [13.25, -15.0], [13.47, -14.47], [13.82, -14.32], [13.97, -13.97], [14.5, -13.75], [14.75, -13.85], [15.0, -13.75], [15.25, -13.85], [15.5, -13.75], [16.03, -13.97], [16.25, -14.5], [16.15, -14.75], [16.25, -15.0], [16.15, -15.25], [16.25, -15.5], [16.15, -15.75], [16.18, -15.82], [16.53, -15.97], [16.75, -16.5], [16.65, -16.75], [16.75, -17.0], [16.53, -17.53], [16.0, -17.75], [15.75, -17.65], [15.5, -17.75], [15.25, -17.65], [15.0, -17.75], [14.75, -17.65], [14.5, -17.75], [13.97, -17.53], [13.75, -17.0], [13.85, -16.75], [13.75, -16.5], [13.85, -16.25], [13.75, -16.0], [13.85, -15.75], [13.82, -15.68], [13.47, -15.53]]]]}, "2022-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.0, -15.75], [13.47, -15.53], [13.25, -15.0], [13.47, -14.47], [14.0, -14.25], [14.25, -14.35], [14.5, -14.25], [15.03, -14.47], [15.25, -15.0], [15.03, -15.53], [14.5, -15.75], [14.25, -15.65], [14.0, -15.75]]]]}, "2022-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, -14.47], [14.0, -14.25], [14.53, -14.47], [14.75, -15.0], [14.53, -15.53], [14.0, -15.75], [13.47, -15.53], [13.25, -15.0], [13.47, -14.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.497074223957611}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.721262950045156}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.032271162564598, 25.81843019544084, 26.731450991584097, 26.25060460968143, 25.812102259722906, 23.994767167989608, 23.831627634554764]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.345763758574833, 28.275574732474126, 29.605063653140803, 29.073123945527357, 27.637365015530747, 24.080988704535912, 23.831627634554764]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.647691129982962, 3.5754287029931393, 4.421618286375458, 3.951189473364375, 2.9848040471631547, 2.6722178431597854, 2.8503124118001324]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.164208567551782, 5.360258072432828, 6.497074223957611, 5.761629636734085, 3.4959743524074156, 2.9827157070002386, 2.8503124118001324]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.759500690023803, 2.4153963094079263, 2.9321458749154385, 2.5121664686669716, 1.6610835469571266, 1.582973407422101, 1.7100729186230585]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0704914562041163, 4.020128249340434, 4.9252892750727995, 4.175535508748117, 2.1744354338772043, 1.8418626852232372, 1.7100729186230585]}}