{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:26:23.905112", "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-Jul-11_to_2021-Jul-14_347.0_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": 2021070002120}, "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 11 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 14 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": 80958.11541748085}, "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": ["Mauritania"]}, "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": 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": 347.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "347.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 345.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 348.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-11.97, 23.47], [-12.5, 23.25], [-12.802, 23.375], [-12.97, 22.97], [-13.5, 22.75], [-14.03, 22.97], [-14.177, 23.323], [-14.53, 23.47], [-14.75, 24.0], [-14.646, 24.25], [-14.677, 24.323], [-15.03, 24.47], [-15.25, 25.0], [-15.146, 25.25], [-15.25, 25.5], [-15.146, 25.75], [-15.25, 26.0], [-15.03, 26.53], [-14.5, 26.75], [-14.25, 26.646], [-14.177, 26.677], [-14.03, 27.03], [-13.677, 27.177], [-13.53, 27.53], [-13.0, 27.75], [-12.47, 27.53], [-12.323, 27.177], [-12.25, 27.146], [-12.0, 27.25], [-11.47, 27.03], [-11.25, 26.5], [-11.354, 26.25], [-11.25, 26.0], [-11.354, 25.75], [-11.25, 25.5], [-11.354, 25.25], [-11.25, 25.0], [-11.47, 24.47], [-11.875, 24.302], [-11.75, 24.0], [-11.97, 23.47]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-11T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-15.146446609406723, 25.25], [-15.25, 25.5], [-15.146446609406723, 25.75], [-15.25, 26.0], [-15.030330085889887, 26.53033008588991], [-14.5, 26.75], [-14.25, 26.646446609406723], [-14.17677669529661, 26.67677669529664], [-14.030330085889887, 27.03033008588991], [-13.67677669529661, 27.17677669529664], [-13.530330085889887, 27.53033008588991], [-13.0, 27.75], [-12.469669914110113, 27.53033008588991], [-12.32322330470339, 27.17677669529664], [-12.25, 27.146446609406723], [-12.0, 27.25], [-11.469669914110113, 27.03033008588991], [-11.25, 26.5], [-11.353553390593277, 26.25], [-11.25, 26.0], [-11.353553390593277, 25.75], [-11.25, 25.5], [-11.353553390593277, 25.25], [-11.25, 25.0], [-11.469669914110113, 24.46966991411009], [-12.0, 24.25], [-12.25, 24.353553390593277], [-12.32322330470339, 24.32322330470336], [-12.469669914110113, 23.96966991411009], [-13.0, 23.75], [-13.25, 23.853553390593277], [-13.32322330470339, 23.82322330470336], [-13.469669914110113, 23.46966991411009], [-14.0, 23.25], [-14.530330085889887, 23.46966991411009], [-14.75, 24.0], [-14.646446609406723, 24.25], [-14.67677669529661, 24.32322330470336], [-15.030330085889887, 24.46966991411009], [-15.25, 25.0], [-15.146446609406723, 25.25]]]}, "2021-07-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-15.146446609406723, 25.25], [-15.25, 25.5], [-15.146446609406723, 25.75], [-15.25, 26.0], [-15.030330085889887, 26.53033008588991], [-14.5, 26.75], [-14.25, 26.646446609406723], [-14.17677669529661, 26.67677669529664], [-14.030330085889887, 27.03033008588991], [-13.67677669529661, 27.17677669529664], [-13.530330085889887, 27.53033008588991], [-13.0, 27.75], [-12.469669914110113, 27.53033008588991], [-12.32322330470339, 27.17677669529664], [-12.25, 27.146446609406723], [-12.0, 27.25], [-11.469669914110113, 27.03033008588991], [-11.25, 26.5], [-11.353553390593277, 26.25], [-11.25, 26.0], [-11.353553390593277, 25.75], [-11.25, 25.5], [-11.353553390593277, 25.25], [-11.25, 25.0], [-11.469669914110113, 24.46966991411009], [-11.875, 24.301776695296635], [-11.75, 24.0], [-11.969669914110113, 23.46966991411009], [-12.5, 23.25], [-12.801776695296667, 23.375000000000007], [-12.969669914110113, 22.96966991411009], [-13.5, 22.75], [-14.030330085889887, 22.96966991411009], [-14.17677669529661, 23.32322330470336], [-14.530330085889887, 23.46966991411009], [-14.75, 24.0], [-14.646446609406723, 24.25], [-14.67677669529661, 24.32322330470336], [-15.030330085889887, 24.46966991411009], [-15.25, 25.0], [-15.146446609406723, 25.25]]]}, "2021-07-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-15.146446609406723, 25.25], [-15.25, 25.5], [-15.146446609406723, 25.75], [-15.25, 26.0], [-15.030330085889887, 26.53033008588991], [-14.5, 26.75], [-14.25, 26.646446609406723], [-14.17677669529661, 26.67677669529664], [-14.030330085889887, 27.03033008588991], [-13.67677669529661, 27.17677669529664], [-13.530330085889887, 27.53033008588991], [-13.0, 27.75], [-12.469669914110113, 27.53033008588991], [-12.32322330470339, 27.17677669529664], [-12.25, 27.146446609406723], [-12.0, 27.25], [-11.469669914110113, 27.03033008588991], [-11.25, 26.5], [-11.353553390593277, 26.25], [-11.25, 26.0], [-11.353553390593277, 25.75], [-11.25, 25.5], [-11.353553390593277, 25.25], [-11.25, 25.0], [-11.469669914110113, 24.46966991411009], [-11.875, 24.301776695296635], [-11.75, 24.0], [-11.969669914110113, 23.46966991411009], [-12.5, 23.25], [-12.801776695296667, 23.375000000000007], [-12.969669914110113, 22.96966991411009], [-13.5, 22.75], [-14.030330085889887, 22.96966991411009], [-14.17677669529661, 23.32322330470336], [-14.530330085889887, 23.46966991411009], [-14.75, 24.0], [-14.646446609406723, 24.25], [-14.67677669529661, 24.32322330470336], [-15.030330085889887, 24.46966991411009], [-15.25, 25.0], [-15.146446609406723, 25.25]]]}, "2021-07-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-13.198223304703333, 24.124999999999993], [-13.030330085889887, 24.53033008588991], [-12.5, 24.75], [-11.969669914110113, 24.53033008588991], [-11.75, 24.0], [-11.969669914110113, 23.46966991411009], [-12.5, 23.25], [-12.801776695296667, 23.375000000000007], [-12.969669914110113, 22.96966991411009], [-13.5, 22.75], [-14.030330085889887, 22.96966991411009], [-14.25, 23.5], [-14.030330085889887, 24.03033008588991], [-13.5, 24.25], [-13.198223304703333, 24.124999999999993]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.043229905780947}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.136883057247648}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.746619081239203, 34.648616299684704, 30.55931373609161, 36.0923397396474]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.66565778035317, 37.128741097305806, 37.756946668918374, 37.18638876914588]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.992952706529163, 8.389180621649762, 4.131019731140819, 4.50664633666554]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.638975315170683, 12.043229905780947, 5.518034679138168, 4.653085643575707]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.278082198617148, 3.541615419437016, 1.6225978139204342, 1.4449067144165466]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [3.911249427670735, 7.182648861037649, 1.9330363285155463, 1.4462809577763946]}}