{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:18.163392", "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": "2020-Jul-07_to_2020-Jul-10_23.5_-27.0"}, "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": 2020070001801}, "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": "July 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 10 2020"}, "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": 120960.35208240793}, "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": ["Botswana", "South Africa"]}, "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": -27.0}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[19.97, -24.97], [20.5, -24.75], [20.75, -24.854], [21.0, -24.75], [21.53, -24.97], [21.677, -25.323], [22.03, -25.47], [22.177, -25.823], [22.25, -25.854], [22.5, -25.75], [22.75, -25.854], [23.0, -25.75], [23.25, -25.854], [23.5, -25.75], [23.75, -25.854], [24.0, -25.75], [24.25, -25.854], [24.323, -25.823], [24.47, -25.47], [25.0, -25.25], [25.25, -25.354], [25.5, -25.25], [26.03, -25.47], [26.25, -26.0], [26.146, -26.25], [26.25, -26.5], [26.146, -26.75], [26.25, -27.0], [26.043, -27.5], [26.25, -28.0], [26.03, -28.53], [25.5, -28.75], [25.25, -28.646], [25.177, -28.677], [25.03, -29.03], [24.5, -29.25], [24.0, -29.043], [23.677, -29.177], [23.53, -29.53], [23.0, -29.75], [22.75, -29.646], [22.5, -29.75], [21.97, -29.53], [21.75, -29.0], [21.854, -28.75], [21.823, -28.677], [21.47, -28.53], [21.323, -28.177], [20.97, -28.03], [20.75, -27.5], [20.854, -27.25], [20.75, -27.0], [20.854, -26.75], [20.823, -26.677], [20.47, -26.53], [20.323, -26.177], [19.97, -26.03], [19.75, -25.5], [19.97, -24.97]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.75, -27.0], [22.96966991411009, -26.46966991411009], [23.5, -26.25], [23.75, -26.353553390593273], [24.0, -26.25], [24.53033008588991, -26.46966991411009], [24.75, -27.0], [24.646446609406727, -27.25], [24.75, -27.5], [24.53033008588991, -28.03033008588991], [24.0, -28.25], [23.75, -28.146446609406727], [23.5, -28.25], [22.96966991411009, -28.03033008588991], [22.75, -27.5], [22.853553390593273, -27.25], [22.75, -27.0]]], [[[26.03033008588991, -26.53033008588991], [25.5, -26.75], [24.96966991411009, -26.53033008588991], [24.75, -26.0], [24.96966991411009, -25.46966991411009], [25.5, -25.25], [26.03033008588991, -25.46966991411009], [26.25, -26.0], [26.03033008588991, -26.53033008588991]]]]}, "2020-07-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[20.32322330470336, -26.17677669529664], [19.96966991411009, -26.03033008588991], [19.75, -25.5], [19.96966991411009, -24.96966991411009], [20.5, -24.75], [20.75, -24.853553390593273], [21.0, -24.75], [21.53033008588991, -24.96966991411009], [21.67677669529664, -25.32322330470336], [22.03033008588991, -25.46966991411009], [22.17677669529664, -25.82322330470336], [22.25, -25.853553390593273], [22.5, -25.75], [22.75, -25.853553390593273], [23.0, -25.75], [23.25, -25.853553390593273], [23.5, -25.75], [23.75, -25.853553390593273], [24.0, -25.75], [24.25, -25.853553390593273], [24.32322330470336, -25.82322330470336], [24.46966991411009, -25.46966991411009], [25.0, -25.25], [25.25, -25.353553390593273], [25.5, -25.25], [26.03033008588991, -25.46966991411009], [26.25, -26.0], [26.146446609406727, -26.25], [26.25, -26.5], [26.146446609406727, -26.75], [26.25, -27.0], [26.042893218813454, -27.5], [26.25, -28.0], [26.03033008588991, -28.53033008588991], [25.5, -28.75], [25.25, -28.646446609406727], [25.17677669529664, -28.67677669529664], [25.03033008588991, -29.03033008588991], [24.5, -29.25], [24.0, -29.042893218813454], [23.67677669529664, -29.17677669529664], [23.53033008588991, -29.53033008588991], [23.0, -29.75], [22.75, -29.646446609406727], [22.5, -29.75], [21.96966991411009, -29.53033008588991], [21.75, -29.0], [21.853553390593273, -28.75], [21.82322330470336, -28.67677669529664], [21.46966991411009, -28.53033008588991], [21.32322330470336, -28.17677669529664], [20.96966991411009, -28.03033008588991], [20.75, -27.5], [20.853553390593273, -27.25], [20.75, -27.0], [20.853553390593273, -26.75], [20.82322330470336, -26.67677669529664], [20.46966991411009, -26.53033008588991], [20.32322330470336, -26.17677669529664]]]}, "2020-07-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[20.32322330470336, -26.17677669529664], [19.96966991411009, -26.03033008588991], [19.75, -25.5], [19.96966991411009, -24.96966991411009], [20.5, -24.75], [20.75, -24.853553390593273], [21.0, -24.75], [21.53033008588991, -24.96966991411009], [21.67677669529664, -25.32322330470336], [22.03033008588991, -25.46966991411009], [22.17677669529664, -25.82322330470336], [22.25, -25.853553390593273], [22.5, -25.75], [22.75, -25.853553390593273], [23.0, -25.75], [23.25, -25.853553390593273], [23.5, -25.75], [23.75, -25.853553390593273], [24.0, -25.75], [24.25, -25.853553390593273], [24.32322330470336, -25.82322330470336], [24.46966991411009, -25.46966991411009], [25.0, -25.25], [25.25, -25.353553390593273], [25.5, -25.25], [26.03033008588991, -25.46966991411009], [26.25, -26.0], [26.146446609406727, -26.25], [26.25, -26.5], [26.146446609406727, -26.75], [26.25, -27.0], [26.042893218813454, -27.5], [26.25, -28.0], [26.03033008588991, -28.53033008588991], [25.5, -28.75], [25.25, -28.646446609406727], [25.17677669529664, -28.67677669529664], [25.03033008588991, -29.03033008588991], [24.5, -29.25], [24.0, -29.042893218813454], [23.67677669529664, -29.17677669529664], [23.53033008588991, -29.53033008588991], [23.0, -29.75], [22.75, -29.646446609406727], [22.5, -29.75], [21.96966991411009, -29.53033008588991], [21.75, -29.0], [21.853553390593273, -28.75], [21.82322330470336, -28.67677669529664], [21.46966991411009, -28.53033008588991], [21.32322330470336, -28.17677669529664], [20.96966991411009, -28.03033008588991], [20.75, -27.5], [20.853553390593273, -27.25], [20.75, -27.0], [20.853553390593273, -26.75], [20.82322330470336, -26.67677669529664], [20.46966991411009, -26.53033008588991], [20.32322330470336, -26.17677669529664]]]}, "2020-07-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[20.32322330470336, -26.17677669529664], [19.96966991411009, -26.03033008588991], [19.75, -25.5], [19.96966991411009, -24.96966991411009], [20.5, -24.75], [20.75, -24.853553390593273], [21.0, -24.75], [21.53033008588991, -24.96966991411009], [21.67677669529664, -25.32322330470336], [22.03033008588991, -25.46966991411009], [22.17677669529664, -25.82322330470336], [22.25, -25.853553390593273], [22.5, -25.75], [22.75, -25.853553390593273], [23.0, -25.75], [23.25, -25.853553390593273], [23.5, -25.75], [23.75, -25.853553390593273], [24.0, -25.75], [24.25, -25.853553390593273], [24.32322330470336, -25.82322330470336], [24.46966991411009, -25.46966991411009], [25.0, -25.25], [25.25, -25.353553390593273], [25.5, -25.25], [26.03033008588991, -25.46966991411009], [26.25, -26.0], [26.146446609406727, -26.25], [26.25, -26.5], [26.146446609406727, -26.75], [26.25, -27.0], [26.042893218813454, -27.5], [26.25, -28.0], [26.03033008588991, -28.53033008588991], [25.5, -28.75], [25.25, -28.646446609406727], [25.17677669529664, -28.67677669529664], [25.03033008588991, -29.03033008588991], [24.5, -29.25], [24.0, -29.042893218813454], [23.67677669529664, -29.17677669529664], [23.53033008588991, -29.53033008588991], [23.0, -29.75], [22.75, -29.646446609406727], [22.5, -29.75], [21.96966991411009, -29.53033008588991], [21.75, -29.0], [21.853553390593273, -28.75], [21.82322330470336, -28.67677669529664], [21.46966991411009, -28.53033008588991], [21.32322330470336, -28.17677669529664], [20.96966991411009, -28.03033008588991], [20.75, -27.5], [20.853553390593273, -27.25], [20.75, -27.0], [20.853553390593273, -26.75], [20.82322330470336, -26.67677669529664], [20.46966991411009, -26.53033008588991], [20.32322330470336, -26.17677669529664]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.215987923466173}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.917982749431844}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.168013316554891, 14.518107387172279, 15.802027587223051, 15.906283719482303]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.61451073208815, 16.46666858828263, 18.924321577841567, 18.340545590218937]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.6424713432392877, 4.176874628468894, 5.3675012354038065, 5.354516862399264]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.236842537442442, 5.570902144503862, 7.215987923466173, 6.824023412171414]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3841744725899625, 1.435599888181219, 1.8764165087907676, 1.9589435124172063]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.577495911937233, 1.7439318016636773, 2.3071570954324536, 2.453109291638753]}}