{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:39.787534", "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-Feb-28_to_2021-Mar-03_20.0_-34.5"}, "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": 2021020002490}, "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 28 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 58558.58561238007}, "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": ["South Africa"]}, "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": ["Indian Ocean"]}, "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": -34.5}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.0}, "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": -35.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[20.0, -33.25], [20.25, -33.354], [20.5, -33.25], [20.75, -33.354], [21.0, -33.25], [21.25, -33.354], [21.5, -33.25], [22.0, -33.457], [22.5, -33.25], [22.75, -33.354], [23.0, -33.25], [23.25, -33.354], [23.5, -33.25], [24.03, -33.47], [24.177, -33.823], [24.25, -33.854], [24.5, -33.75], [24.75, -33.854], [25.0, -33.75], [25.53, -33.97], [25.75, -34.5], [25.53, -35.03], [25.177, -35.177], [25.03, -35.53], [24.5, -35.75], [24.25, -35.646], [24.0, -35.75], [23.75, -35.646], [23.677, -35.677], [23.53, -36.03], [23.0, -36.25], [22.75, -36.146], [22.5, -36.25], [21.97, -36.03], [21.823, -35.677], [21.47, -35.53], [21.25, -35.0], [21.354, -34.75], [21.323, -34.677], [21.25, -34.646], [21.177, -34.677], [21.03, -35.03], [20.5, -35.25], [20.25, -35.146], [20.0, -35.25], [19.47, -35.03], [19.25, -34.5], [19.354, -34.25], [19.25, -34.0], [19.47, -33.47], [20.0, -33.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa", "E.Southern-Africa", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[19.353553390593273, -34.25], [19.25, -34.0], [19.46966991411009, -33.46966991411009], [20.0, -33.25], [20.25, -33.35355339059328], [20.5, -33.25], [20.75, -33.35355339059328], [21.0, -33.25], [21.25, -33.35355339059328], [21.5, -33.25], [22.0, -33.45710678118655], [22.5, -33.25], [22.75, -33.35355339059328], [23.0, -33.25], [23.25, -33.35355339059328], [23.5, -33.25], [24.03033008588991, -33.46966991411009], [24.17677669529664, -33.82322330470336], [24.25, -33.85355339059328], [24.5, -33.75], [24.75, -33.85355339059328], [25.0, -33.75], [25.53033008588991, -33.96966991411009], [25.75, -34.5], [25.53033008588991, -35.03033008588991], [25.17677669529664, -35.17677669529664], [25.03033008588991, -35.53033008588991], [24.5, -35.75], [24.25, -35.64644660940672], [24.0, -35.75], [23.75, -35.64644660940672], [23.67677669529664, -35.67677669529664], [23.53033008588991, -36.03033008588991], [23.0, -36.25], [22.75, -36.14644660940672], [22.5, -36.25], [21.96966991411009, -36.03033008588991], [21.82322330470336, -35.67677669529664], [21.46966991411009, -35.53033008588991], [21.25, -35.0], [21.353553390593273, -34.75], [21.32322330470336, -34.67677669529664], [21.25, -34.64644660940672], [21.17677669529664, -34.67677669529664], [21.03033008588991, -35.03033008588991], [20.5, -35.25], [20.25, -35.14644660940672], [20.0, -35.25], [19.46966991411009, -35.03033008588991], [19.25, -34.5], [19.353553390593273, -34.25]]]}, "2021-03-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[19.353553390593273, -34.25], [19.25, -34.0], [19.46966991411009, -33.46966991411009], [20.0, -33.25], [20.25, -33.35355339059328], [20.5, -33.25], [20.75, -33.35355339059328], [21.0, -33.25], [21.25, -33.35355339059328], [21.5, -33.25], [22.0, -33.45710678118655], [22.5, -33.25], [22.75, -33.35355339059328], [23.0, -33.25], [23.25, -33.35355339059328], [23.5, -33.25], [24.03033008588991, -33.46966991411009], [24.17677669529664, -33.82322330470336], [24.25, -33.85355339059328], [24.5, -33.75], [24.75, -33.85355339059328], [25.0, -33.75], [25.53033008588991, -33.96966991411009], [25.75, -34.5], [25.53033008588991, -35.03033008588991], [25.17677669529664, -35.17677669529664], [25.03033008588991, -35.53033008588991], [24.5, -35.75], [24.25, -35.64644660940672], [24.0, -35.75], [23.75, -35.64644660940672], [23.67677669529664, -35.67677669529664], [23.53033008588991, -36.03033008588991], [23.0, -36.25], [22.75, -36.14644660940672], [22.5, -36.25], [21.96966991411009, -36.03033008588991], [21.82322330470336, -35.67677669529664], [21.46966991411009, -35.53033008588991], [21.25, -35.0], [21.353553390593273, -34.75], [21.32322330470336, -34.67677669529664], [21.25, -34.64644660940672], [21.17677669529664, -34.67677669529664], [21.03033008588991, -35.03033008588991], [20.5, -35.25], [20.25, -35.14644660940672], [20.0, -35.25], [19.46966991411009, -35.03033008588991], [19.25, -34.5], [19.353553390593273, -34.25]]]}, "2021-03-02T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[19.353553390593273, -34.25], [19.25, -34.0], [19.46966991411009, -33.46966991411009], [20.0, -33.25], [20.25, -33.35355339059328], [20.5, -33.25], [20.75, -33.35355339059328], [21.0, -33.25], [21.25, -33.35355339059328], [21.5, -33.25], [22.0, -33.45710678118655], [22.5, -33.25], [22.75, -33.35355339059328], [23.0, -33.25], [23.25, -33.35355339059328], [23.5, -33.25], [24.03033008588991, -33.46966991411009], [24.17677669529664, -33.82322330470336], [24.25, -33.85355339059328], [24.5, -33.75], [24.75, -33.85355339059328], [25.0, -33.75], [25.53033008588991, -33.96966991411009], [25.75, -34.5], [25.53033008588991, -35.03033008588991], [25.17677669529664, -35.17677669529664], [25.03033008588991, -35.53033008588991], [24.5, -35.75], [24.25, -35.64644660940672], [24.0, -35.75], [23.75, -35.64644660940672], [23.67677669529664, -35.67677669529664], [23.53033008588991, -36.03033008588991], [23.0, -36.25], [22.75, -36.14644660940672], [22.5, -36.25], [21.96966991411009, -36.03033008588991], [21.82322330470336, -35.67677669529664], [21.46966991411009, -35.53033008588991], [21.25, -35.0], [21.353553390593273, -34.75], [21.32322330470336, -34.67677669529664], [21.25, -34.64644660940672], [21.17677669529664, -34.67677669529664], [21.03033008588991, -35.03033008588991], [20.5, -35.25], [20.25, -35.14644660940672], [20.0, -35.25], [19.46966991411009, -35.03033008588991], [19.25, -34.5], [19.353553390593273, -34.25]]]}, "2021-03-03T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[19.25, -34.5], [19.46966991411009, -33.96966991411009], [20.0, -33.75], [20.53033008588991, -33.96966991411009], [20.75, -34.5], [20.53033008588991, -35.03033008588991], [20.0, -35.25], [19.46966991411009, -35.03033008588991], [19.25, -34.5]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.5107323239732295}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.480121237744893}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.93247451408297, 23.992114097907177, 23.02177547844832, 22.635403328131474]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.36422577525599, 26.42361618397149, 25.143277692066874, 22.635403328131474]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.0093092767817433, 3.2012979100056187, 2.2534234889590845, 1.9357810999742355]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.929501018939561, 5.5107323239732295, 3.822020190036369, 1.9357810999742355]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4650651159842303, 2.1640105205869986, 1.5428155393777243, 1.1040454082288842]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7596907297837983, 3.1510087443412504, 1.8645266878150941, 1.1040454082288842]}}