{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:03.803812", "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-Aug-15_to_2020-Aug-20_344.0_15.0"}, "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": 2020080002300}, "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": "August 15 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 101560.94861404649}, "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": ["Gambia", "Senegal"]}, "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": ["Atlantic 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": 15.0}, "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": 344.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "344.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 340.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 345.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-15.5, 16.25], [-14.97, 16.03], [-14.823, 15.677], [-14.47, 15.53], [-14.25, 15.0], [-14.47, 14.47], [-14.823, 14.323], [-14.97, 13.97], [-15.5, 13.75], [-15.75, 13.854], [-15.823, 13.823], [-15.854, 13.75], [-15.823, 13.677], [-15.47, 13.53], [-15.25, 13.0], [-15.47, 12.47], [-16.0, 12.25], [-16.25, 12.354], [-16.5, 12.25], [-17.03, 12.47], [-17.25, 13.0], [-17.146, 13.25], [-17.177, 13.323], [-17.53, 13.47], [-17.677, 13.823], [-17.75, 13.854], [-18.0, 13.75], [-18.5, 13.957], [-18.823, 13.823], [-18.97, 13.47], [-19.5, 13.25], [-20.03, 13.47], [-20.25, 14.0], [-20.146, 14.25], [-20.25, 14.5], [-20.03, 15.03], [-19.677, 15.177], [-19.53, 15.53], [-19.177, 15.677], [-19.146, 15.75], [-19.25, 16.0], [-19.03, 16.53], [-18.5, 16.75], [-18.25, 16.646], [-18.0, 16.75], [-17.75, 16.646], [-17.5, 16.75], [-17.25, 16.646], [-17.177, 16.677], [-17.03, 17.03], [-16.5, 17.25], [-15.97, 17.03], [-15.75, 16.5], [-15.875, 16.198], [-15.75, 16.146], [-15.5, 16.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-20.146446609406723, 14.25], [-20.25, 14.5], [-20.030330085889887, 15.030330085889911], [-19.67677669529661, 15.176776695296637], [-19.530330085889887, 15.530330085889911], [-19.0, 15.75], [-18.698223304703333, 15.624999999999993], [-18.530330085889887, 16.03033008588991], [-18.0, 16.25], [-17.75, 16.146446609406723], [-17.5, 16.25], [-17.25, 16.146446609406723], [-17.0, 16.25], [-16.469669914110113, 16.03033008588991], [-16.25, 15.5], [-16.469669914110113, 14.969669914110089], [-16.82322330470339, 14.823223304703363], [-16.853553390593277, 14.75], [-16.82322330470339, 14.676776695296637], [-16.469669914110113, 14.530330085889911], [-16.25, 14.0], [-16.469669914110113, 13.469669914110089], [-17.0, 13.25], [-17.530330085889887, 13.469669914110089], [-17.67677669529661, 13.823223304703363], [-17.75, 13.853553390593278], [-18.0, 13.75], [-18.5, 13.957106781186557], [-18.82322330470339, 13.823223304703363], [-18.969669914110113, 13.469669914110089], [-19.5, 13.25], [-20.030330085889887, 13.469669914110089], [-20.25, 14.0], [-20.146446609406723, 14.25]]]}, "2020-08-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-20.146446609406723, 14.25], [-20.25, 14.5], [-20.030330085889887, 15.030330085889911], [-19.67677669529661, 15.176776695296637], [-19.530330085889887, 15.530330085889911], [-19.17677669529661, 15.676776695296637], [-19.146446609406723, 15.75], [-19.25, 16.0], [-19.030330085889887, 16.53033008588991], [-18.5, 16.75], [-18.25, 16.646446609406723], [-18.0, 16.75], [-17.75, 16.646446609406723], [-17.5, 16.75], [-17.25, 16.646446609406723], [-17.17677669529661, 16.67677669529664], [-17.030330085889887, 17.03033008588991], [-16.5, 17.25], [-15.969669914110113, 17.03033008588991], [-15.75, 16.5], [-15.969669914110113, 15.969669914110089], [-16.32322330470339, 15.823223304703363], [-16.353553390593277, 15.75], [-16.301776695296667, 15.624999999999993], [-16.0, 15.75], [-15.469669914110113, 15.530330085889911], [-15.25, 15.0], [-15.469669914110113, 14.469669914110089], [-16.0, 14.25], [-16.301776695296667, 14.375000000000007], [-16.353553390593277, 14.25], [-16.25, 14.0], [-16.469669914110113, 13.469669914110089], [-17.0, 13.25], [-17.530330085889887, 13.469669914110089], [-17.67677669529661, 13.823223304703363], [-17.75, 13.853553390593278], [-18.0, 13.75], [-18.5, 13.957106781186557], [-18.82322330470339, 13.823223304703363], [-18.969669914110113, 13.469669914110089], [-19.5, 13.25], [-20.030330085889887, 13.469669914110089], [-20.25, 14.0], [-20.146446609406723, 14.25]]]}, "2020-08-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-20.146446609406723, 14.25], [-20.25, 14.5], [-20.030330085889887, 15.030330085889911], [-19.67677669529661, 15.176776695296637], [-19.530330085889887, 15.530330085889911], [-19.17677669529661, 15.676776695296637], [-19.146446609406723, 15.75], [-19.25, 16.0], [-19.030330085889887, 16.53033008588991], [-18.5, 16.75], [-18.25, 16.646446609406723], [-18.0, 16.75], [-17.75, 16.646446609406723], [-17.5, 16.75], [-17.25, 16.646446609406723], [-17.17677669529661, 16.67677669529664], [-17.030330085889887, 17.03033008588991], [-16.5, 17.25], [-15.969669914110113, 17.03033008588991], [-15.75, 16.5], [-15.875, 16.198223304703365], [-15.75, 16.146446609406723], [-15.5, 16.25], [-14.969669914110113, 16.03033008588991], [-14.82322330470339, 15.676776695296637], [-14.469669914110113, 15.530330085889911], [-14.25, 15.0], [-14.469669914110113, 14.469669914110089], [-14.82322330470339, 14.323223304703363], [-14.969669914110113, 13.969669914110089], [-15.5, 13.75], [-15.75, 13.853553390593278], [-15.82322330470339, 13.823223304703363], [-15.853553390593277, 13.75], [-15.82322330470339, 13.676776695296637], [-15.469669914110113, 13.530330085889911], [-15.25, 13.0], [-15.469669914110113, 12.469669914110089], [-16.0, 12.25], [-16.25, 12.353553390593278], [-16.5, 12.25], [-17.030330085889887, 12.469669914110089], [-17.25, 13.0], [-17.146446609406723, 13.25], [-17.17677669529661, 13.323223304703363], [-17.530330085889887, 13.469669914110089], [-17.67677669529661, 13.823223304703363], [-17.75, 13.853553390593278], [-18.0, 13.75], [-18.5, 13.957106781186557], [-18.82322330470339, 13.823223304703363], [-18.969669914110113, 13.469669914110089], [-19.5, 13.25], [-20.030330085889887, 13.469669914110089], [-20.25, 14.0], [-20.146446609406723, 14.25]]]}, "2020-08-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-20.146446609406723, 14.25], [-20.25, 14.5], [-20.030330085889887, 15.030330085889911], [-19.67677669529661, 15.176776695296637], [-19.530330085889887, 15.530330085889911], [-19.17677669529661, 15.676776695296637], [-19.146446609406723, 15.75], [-19.25, 16.0], [-19.030330085889887, 16.53033008588991], [-18.5, 16.75], [-18.25, 16.646446609406723], [-18.0, 16.75], [-17.75, 16.646446609406723], [-17.5, 16.75], [-17.25, 16.646446609406723], [-17.17677669529661, 16.67677669529664], [-17.030330085889887, 17.03033008588991], [-16.5, 17.25], [-15.969669914110113, 17.03033008588991], [-15.75, 16.5], [-15.875, 16.198223304703365], [-15.75, 16.146446609406723], [-15.5, 16.25], [-14.969669914110113, 16.03033008588991], [-14.82322330470339, 15.676776695296637], [-14.469669914110113, 15.530330085889911], [-14.25, 15.0], [-14.469669914110113, 14.469669914110089], [-14.82322330470339, 14.323223304703363], [-14.969669914110113, 13.969669914110089], [-15.5, 13.75], [-15.75, 13.853553390593278], [-15.82322330470339, 13.823223304703363], [-15.853553390593277, 13.75], [-15.82322330470339, 13.676776695296637], [-15.469669914110113, 13.530330085889911], [-15.25, 13.0], [-15.469669914110113, 12.469669914110089], [-16.0, 12.25], [-16.25, 12.353553390593278], [-16.5, 12.25], [-17.030330085889887, 12.469669914110089], [-17.25, 13.0], [-17.146446609406723, 13.25], [-17.25, 13.5], [-17.146446609406723, 13.75], [-17.17677669529661, 13.823223304703363], [-17.25, 13.853553390593278], [-17.5, 13.75], [-17.75, 13.853553390593278], [-18.0, 13.75], [-18.5, 13.957106781186557], [-18.82322330470339, 13.823223304703363], [-18.969669914110113, 13.469669914110089], [-19.5, 13.25], [-20.030330085889887, 13.469669914110089], [-20.25, 14.0], [-20.146446609406723, 14.25]]]}, "2020-08-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-17.17677669529661, 13.823223304703363], [-17.530330085889887, 13.969669914110089], [-17.75, 14.5], [-17.530330085889887, 15.030330085889911], [-17.17677669529661, 15.176776695296637], [-17.030330085889887, 15.530330085889911], [-16.67677669529661, 15.676776695296637], [-16.530330085889887, 16.03033008588991], [-16.0, 16.25], [-15.75, 16.146446609406723], [-15.5, 16.25], [-14.969669914110113, 16.03033008588991], [-14.82322330470339, 15.676776695296637], [-14.469669914110113, 15.530330085889911], [-14.25, 15.0], [-14.469669914110113, 14.469669914110089], [-14.82322330470339, 14.323223304703363], [-14.969669914110113, 13.969669914110089], [-15.5, 13.75], [-15.75, 13.853553390593278], [-15.82322330470339, 13.823223304703363], [-15.853553390593277, 13.75], [-15.82322330470339, 13.676776695296637], [-15.469669914110113, 13.530330085889911], [-15.25, 13.0], [-15.469669914110113, 12.469669914110089], [-16.0, 12.25], [-16.25, 12.353553390593278], [-16.5, 12.25], [-17.030330085889887, 12.469669914110089], [-17.25, 13.0], [-17.146446609406723, 13.25], [-17.25, 13.5], [-17.146446609406723, 13.75], [-17.17677669529661, 13.823223304703363]]]}, "2020-08-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-16.67677669529661, 14.323223304703363], [-17.030330085889887, 14.469669914110089], [-17.25, 15.0], [-17.030330085889887, 15.530330085889911], [-16.67677669529661, 15.676776695296637], [-16.530330085889887, 16.03033008588991], [-16.0, 16.25], [-15.75, 16.146446609406723], [-15.5, 16.25], [-14.969669914110113, 16.03033008588991], [-14.82322330470339, 15.676776695296637], [-14.469669914110113, 15.530330085889911], [-14.25, 15.0], [-14.469669914110113, 14.469669914110089], [-14.82322330470339, 14.323223304703363], [-14.969669914110113, 13.969669914110089], [-15.5, 13.75], [-15.75, 13.853553390593278], [-16.0, 13.75], [-16.530330085889887, 13.969669914110089], [-16.67677669529661, 14.323223304703363]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.7131862051862754}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.293032552468424}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.761708738042614, 27.963478031688453, 28.613596431771157, 28.715437654982225, 29.134223185592646, 29.667691307075017]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.94317698178503, 29.369935672601287, 31.08751292733359, 31.035826574760733, 30.36986780122436, 30.70085925135504]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.8681402165778659, 0.9761304346197103, 1.3514273611615257, 1.4483856560783268, 1.4554686201947789, 1.6285792725305726]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.943963656433084, 1.4115209638792408, 2.3759807178350343, 2.7131862051862754, 1.7500287874362925, 2.374994634198117]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.417282456980982, 1.5353874068506579, 1.7434627859345722, 1.8112814063097107, 1.5323894433293288, 1.5733022366045468]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.705777982666339, 2.050315194888544, 2.6166471968775276, 2.2244037701880734, 1.8625851310333084, 2.0229932264819346]}}