{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:11.848343", "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": "2021-Oct-22_to_2021-Oct-28_15.5_-12.5"}, "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": 2021100002266}, "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": "October 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 2021"}, "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": 75057.5210397472}, "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"]}, "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": -12.5}, "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": 14.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[13.97, -12.47], [14.32, -12.32], [14.47, -11.97], [14.82, -11.82], [14.97, -11.47], [15.5, -11.25], [16.03, -11.47], [16.18, -11.82], [16.53, -11.97], [16.75, -12.5], [16.54, -13.0], [16.75, -13.5], [16.65, -13.75], [16.68, -13.82], [16.75, -13.85], [17.0, -13.75], [17.53, -13.97], [17.75, -14.5], [17.65, -14.75], [17.75, -15.0], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [16.25, -15.65], [16.0, -15.75], [15.47, -15.53], [15.32, -15.18], [15.25, -15.15], [15.0, -15.25], [14.47, -15.03], [14.32, -14.68], [14.25, -14.65], [14.0, -14.75], [13.47, -14.53], [13.25, -14.0], [13.35, -13.75], [13.25, -13.5], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47]]]]}}, "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": {"2021-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -13.5], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.5, -12.25], [15.03, -12.47], [15.25, -13.0], [15.15, -13.25], [15.18, -13.32], [15.53, -13.47], [15.75, -14.0], [15.53, -14.53], [15.0, -14.75], [14.5, -14.54], [14.0, -14.75], [13.47, -14.53], [13.25, -14.0], [13.35, -13.75], [13.25, -13.5]]]]}, "2021-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -13.5], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.32, -12.32], [14.47, -11.97], [14.82, -11.82], [14.97, -11.47], [15.5, -11.25], [16.03, -11.47], [16.18, -11.82], [16.53, -11.97], [16.75, -12.5], [16.54, -13.0], [16.75, -13.5], [16.65, -13.75], [16.68, -13.82], [16.75, -13.85], [17.0, -13.75], [17.53, -13.97], [17.75, -14.5], [17.65, -14.75], [17.75, -15.0], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [16.25, -15.65], [16.0, -15.75], [15.47, -15.53], [15.32, -15.18], [15.25, -15.15], [15.0, -15.25], [14.47, -15.03], [14.32, -14.68], [14.25, -14.65], [14.0, -14.75], [13.47, -14.53], [13.25, -14.0], [13.35, -13.75], [13.25, -13.5]]]]}, "2021-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -13.5], [13.47, -12.97], [13.82, -12.82], [13.97, -12.47], [14.32, -12.32], [14.47, -11.97], [14.82, -11.82], [14.97, -11.47], [15.5, -11.25], [16.03, -11.47], [16.18, -11.82], [16.53, -11.97], [16.75, -12.5], [16.54, -13.0], [16.75, -13.5], [16.65, -13.75], [16.68, -13.82], [16.75, -13.85], [17.0, -13.75], [17.53, -13.97], [17.75, -14.5], [17.65, -14.75], [17.75, -15.0], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [16.25, -15.65], [16.0, -15.75], [15.47, -15.53], [15.32, -15.18], [15.25, -15.15], [15.0, -15.25], [14.47, -15.03], [14.32, -14.68], [14.25, -14.65], [14.0, -14.75], [13.47, -14.53], [13.25, -14.0], [13.35, -13.75], [13.25, -13.5]]]]}, "2021-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.75, -13.5], [13.97, -12.97], [14.32, -12.82], [14.35, -12.75], [14.25, -12.5], [14.47, -11.97], [14.82, -11.82], [14.97, -11.47], [15.5, -11.25], [16.03, -11.47], [16.18, -11.82], [16.53, -11.97], [16.75, -12.5], [16.54, -13.0], [16.75, -13.5], [16.65, -13.75], [16.68, -13.82], [16.75, -13.85], [17.0, -13.75], [17.53, -13.97], [17.75, -14.5], [17.65, -14.75], [17.75, -15.0], [17.53, -15.53], [17.0, -15.75], [16.75, -15.65], [16.5, -15.75], [16.25, -15.65], [16.0, -15.75], [15.47, -15.53], [15.32, -15.18], [15.25, -15.15], [15.0, -15.25], [14.47, -15.03], [14.32, -14.68], [13.97, -14.53], [13.75, -14.0], [13.85, -13.75], [13.75, -13.5]]]]}, "2021-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, -11.97], [15.5, -11.75], [16.03, -11.97], [16.25, -12.5], [16.03, -13.03], [15.5, -13.25], [14.97, -13.03], [14.75, -12.5], [14.97, -11.97]]]]}, "2021-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, -11.97], [15.5, -11.75], [16.03, -11.97], [16.25, -12.5], [16.03, -13.03], [15.5, -13.25], [14.97, -13.03], [14.75, -12.5], [14.97, -11.97]]]]}, "2021-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, -11.97], [15.5, -11.75], [16.03, -11.97], [16.25, -12.5], [16.03, -13.03], [15.5, -13.25], [14.97, -13.03], [14.75, -12.5], [14.97, -11.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8938554485638974}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.6007868489341375}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.474207432170317, 24.87813772336267, 24.79521199633058, 24.441561045151843, 20.394974081493103, 20.594550934809263, 20.382542907164236]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.993899658760654, 28.567303425735304, 28.767030959952308, 28.244620276338367, 20.394974081493103, 20.594550934809263, 20.382542907164236]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7149202603069853, 2.7728007772659113, 2.7398324209245923, 2.613194816321244, 1.281531703045971, 1.538502527944388, 1.362196468375771]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2195984474289503, 3.5671282881240245, 3.8938554485638974, 3.5544130603953477, 1.281531703045971, 1.538502527944388, 1.362196468375771]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5438890655715225, 1.8782323260116514, 1.809263952476418, 1.6884339316131154, 1.292080160965444, 1.5658552638790277, 1.3737174357816488]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8268113387887979, 3.091014860332287, 2.4389359731484808, 2.587289835512116, 1.292080160965444, 1.5658552638790277, 1.3737174357816488]}}