{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:22.174927", "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-Sep-05_to_2020-Sep-09_13.0_1.0"}, "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": 2020090001323}, "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": "September 05 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 09 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 95812.1157863299}, "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": ["Congo", "Gabon"]}, "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": 1.0}, "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": 13.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[10.25, 1.0], [10.47, 1.53], [11.0, 1.75], [11.25, 1.646], [11.274, 1.656], [11.323, 1.677], [11.47, 2.03], [12.0, 2.25], [12.53, 2.03], [12.698, 1.625], [12.823, 1.677], [12.97, 2.03], [13.5, 2.25], [14.03, 2.03], [14.177, 1.677], [14.25, 1.646], [14.251, 1.646], [14.5, 1.75], [15.03, 1.53], [15.177, 1.177], [15.25, 1.146], [15.5, 1.25], [16.03, 1.03], [16.25, 0.5], [16.146, 0.25], [16.25, 0.0], [16.03, -0.53], [15.5, -0.75], [15.25, -0.646], [15.125, -0.698], [15.25, -1.0], [15.03, -1.53], [14.5, -1.75], [14.25, -1.646], [14.0, -1.75], [13.75, -1.646], [13.749, -1.646], [13.677, -1.677], [13.53, -2.03], [13.0, -2.25], [12.75, -2.146], [12.5, -2.25], [12.25, -2.146], [12.0, -2.25], [11.47, -2.03], [11.323, -1.677], [10.97, -1.53], [10.823, -1.177], [10.47, -1.03], [10.25, -0.5], [10.457, -0.0], [10.25, 0.5], [10.354, 0.75], [10.25, 1.0]], [[12.53, -0.03], [12.177, -0.177], [12.146, -0.25], [12.177, -0.323], [12.53, -0.47], [12.677, -0.823], [12.75, -0.854], [12.823, -0.823], [12.97, -0.47], [13.323, -0.323], [13.354, -0.25], [13.323, -0.177], [12.97, -0.03], [12.823, 0.323], [12.698, 0.375], [12.53, -0.03]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[12.25, 1.0], [12.469669914110089, 1.5303300858899105], [13.0, 1.75], [13.530330085889911, 1.5303300858899107], [13.75, 1.0], [13.530330085889911, 0.4696699141100894], [13.0, 0.25], [12.469669914110089, 0.4696699141100893], [12.25, 1.0]]]}, "2020-09-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[11.25, 0.3535533905932736], [11.0, 0.25], [10.469669914110089, 0.4696699141100893], [10.25, 1.0], [10.469669914110089, 1.5303300858899105], [11.0, 1.75], [11.25, 1.6464466094067263], [11.323223304703363, 1.6767766952966368], [11.469669914110089, 2.0303300858899105], [12.0, 2.25], [12.530330085889911, 2.0303300858899105], [12.698223304703363, 1.6250000000000002], [12.823223304703363, 1.6767766952966368], [12.969669914110089, 2.0303300858899105], [13.5, 2.25], [14.030330085889911, 2.0303300858899105], [14.176776695296637, 1.676776695296637], [14.530330085889911, 1.5303300858899107], [14.75, 1.0], [14.646446609406727, 0.75], [14.676776695296637, 0.6767766952966369], [14.801776695296637, 0.6250000000000002], [14.969669914110089, 1.0303300858899105], [15.5, 1.25], [16.03033008588991, 1.0303300858899107], [16.25, 0.5], [16.03033008588991, -0.030330085889910596], [15.5, -0.25], [15.198223304703363, -0.12500000000000025], [15.042893218813454, -0.49999999999999994], [15.25, -1.0], [15.030330085889911, -1.5303300858899105], [14.5, -1.75], [14.25, -1.6464466094067263], [14.0, -1.75], [13.75, -1.6464466094067263], [13.5, -1.75], [12.969669914110089, -1.5303300858899107], [12.75, -1.0], [12.969669914110089, -0.4696699141100894], [13.323223304703363, -0.32322330470336313], [13.353553390593273, -0.25], [13.323223304703363, -0.1767766952966369], [12.969669914110089, -0.030330085889910707], [12.823223304703363, 0.3232233047033631], [12.698223304703363, 0.3749999999999998], [12.530330085889911, -0.030330085889910596], [12.0, -0.25], [11.469669914110089, -0.030330085889910707], [11.323223304703363, 0.3232233047033631], [11.25, 0.3535533905932736]]]}, "2020-09-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[10.353553390593273, 0.75], [10.25, 1.0], [10.469669914110089, 1.5303300858899105], [11.0, 1.75], [11.25, 1.6464466094067263], [11.323223304703363, 1.6767766952966368], [11.469669914110089, 2.0303300858899105], [12.0, 2.25], [12.530330085889911, 2.0303300858899105], [12.698223304703363, 1.6250000000000002], [12.823223304703363, 1.6767766952966368], [12.969669914110089, 2.0303300858899105], [13.5, 2.25], [14.030330085889911, 2.0303300858899105], [14.176776695296637, 1.676776695296637], [14.25, 1.6464466094067263], [14.5, 1.75], [15.030330085889911, 1.5303300858899107], [15.176776695296637, 1.176776695296637], [15.25, 1.1464466094067263], [15.5, 1.25], [16.03033008588991, 1.0303300858899107], [16.25, 0.5], [16.146446609406727, 0.25], [16.25, 0.0], [16.03033008588991, -0.5303300858899106], [15.5, -0.75], [15.25, -0.6464466094067264], [15.125, -0.698223304703363], [15.25, -1.0], [15.030330085889911, -1.5303300858899105], [14.5, -1.75], [14.25, -1.6464466094067263], [14.0, -1.75], [13.75, -1.6464466094067263], [13.676776695296637, -1.6767766952966368], [13.530330085889911, -2.0303300858899105], [13.0, -2.25], [12.75, -2.1464466094067265], [12.5, -2.25], [12.25, -2.1464466094067265], [12.0, -2.25], [11.469669914110089, -2.0303300858899105], [11.323223304703363, -1.676776695296637], [10.969669914110089, -1.5303300858899107], [10.823223304703363, -1.176776695296637], [10.469669914110089, -1.0303300858899107], [10.25, -0.5], [10.457106781186546, -5.233641528945917e-17], [10.25, 0.5], [10.353553390593273, 0.75]], [[12.176776695296637, -0.3232233047033631], [12.530330085889911, -0.4696699141100893], [12.676776695296637, -0.8232233047033631], [12.75, -0.8535533905932736], [12.823223304703363, -0.8232233047033631], [12.969669914110089, -0.4696699141100894], [13.323223304703363, -0.32322330470336313], [13.353553390593273, -0.25], [13.323223304703363, -0.1767766952966369], [12.969669914110089, -0.030330085889910707], [12.823223304703363, 0.3232233047033631], [12.698223304703363, 0.3749999999999998], [12.530330085889911, -0.030330085889910596], [12.176776695296637, -0.17677669529663687], [12.146446609406727, -0.24999999999999997], [12.176776695296637, -0.3232233047033631]]]}, "2020-09-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[10.353553390593273, 0.75], [10.25, 1.0], [10.469669914110089, 1.5303300858899105], [11.0, 1.75], [11.25, 1.6464466094067263], [11.323223304703363, 1.6767766952966368], [11.469669914110089, 2.0303300858899105], [12.0, 2.25], [12.530330085889911, 2.0303300858899105], [12.698223304703363, 1.6250000000000002], [12.823223304703363, 1.6767766952966368], [12.969669914110089, 2.0303300858899105], [13.5, 2.25], [14.030330085889911, 2.0303300858899105], [14.176776695296637, 1.676776695296637], [14.25, 1.6464466094067263], [14.5, 1.75], [15.030330085889911, 1.5303300858899107], [15.176776695296637, 1.176776695296637], [15.25, 1.1464466094067263], [15.5, 1.25], [16.03033008588991, 1.0303300858899107], [16.25, 0.5], [16.146446609406727, 0.25], [16.25, 0.0], [16.03033008588991, -0.5303300858899106], [15.5, -0.75], [15.25, -0.6464466094067264], [15.125, -0.698223304703363], [15.25, -1.0], [15.030330085889911, -1.5303300858899105], [14.5, -1.75], [14.25, -1.6464466094067263], [14.0, -1.75], [13.75, -1.6464466094067263], [13.676776695296637, -1.6767766952966368], [13.530330085889911, -2.0303300858899105], [13.0, -2.25], [12.75, -2.1464466094067265], [12.5, -2.25], [12.25, -2.1464466094067265], [12.0, -2.25], [11.469669914110089, -2.0303300858899105], [11.323223304703363, -1.676776695296637], [10.969669914110089, -1.5303300858899107], [10.823223304703363, -1.176776695296637], [10.469669914110089, -1.0303300858899107], [10.25, -0.5], [10.457106781186546, -5.233641528945917e-17], [10.25, 0.5], [10.353553390593273, 0.75]], [[12.176776695296637, -0.3232233047033631], [12.530330085889911, -0.4696699141100893], [12.676776695296637, -0.8232233047033631], [12.75, -0.8535533905932736], [12.823223304703363, -0.8232233047033631], [12.969669914110089, -0.4696699141100894], [13.323223304703363, -0.32322330470336313], [13.353553390593273, -0.25], [13.323223304703363, -0.1767766952966369], [12.969669914110089, -0.030330085889910707], [12.823223304703363, 0.3232233047033631], [12.698223304703363, 0.3749999999999998], [12.530330085889911, -0.030330085889910596], [12.176776695296637, -0.17677669529663687], [12.146446609406727, -0.24999999999999997], [12.176776695296637, -0.3232233047033631]]]}, "2020-09-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[10.457106781186546, -5.233641528945917e-17], [10.25, 0.5], [10.469669914110089, 1.0303300858899105], [10.823223304703363, 1.1767766952966368], [10.969669914110089, 1.5303300858899105], [11.5, 1.75], [12.030330085889911, 1.5303300858899107], [12.176776695296637, 1.176776695296637], [12.301776695296637, 1.1250000000000002], [12.469669914110089, 1.5303300858899105], [13.0, 1.75], [13.5, 1.5428932188134528], [14.0, 1.75], [14.25, 1.6464466094067263], [14.5, 1.75], [15.030330085889911, 1.5303300858899107], [15.176776695296637, 1.176776695296637], [15.25, 1.1464466094067263], [15.5, 1.25], [16.03033008588991, 1.0303300858899107], [16.25, 0.5], [16.146446609406727, 0.25], [16.25, 0.0], [16.03033008588991, -0.5303300858899106], [15.5, -0.75], [15.25, -0.6464466094067264], [15.0, -0.75], [14.75, -0.6464466094067264], [14.625, -0.698223304703363], [14.75, -1.0], [14.530330085889911, -1.5303300858899105], [14.0, -1.75], [13.698223304703363, -1.6250000000000002], [13.530330085889911, -2.0303300858899105], [13.0, -2.25], [12.75, -2.1464466094067265], [12.5, -2.25], [12.25, -2.1464466094067265], [12.0, -2.25], [11.469669914110089, -2.0303300858899105], [11.323223304703363, -1.676776695296637], [10.969669914110089, -1.5303300858899107], [10.823223304703363, -1.176776695296637], [10.469669914110089, -1.0303300858899107], [10.25, -0.5], [10.457106781186546, -5.233641528945917e-17]], [[13.875, -0.301776695296637], [13.75, 0.0], [13.853553390593273, 0.24999999999999997], [13.823223304703363, 0.3232233047033631], [13.5, 0.45710678118654724], [13.0, 0.25], [12.698223304703363, 0.3749999999999998], [12.530330085889911, -0.030330085889910596], [12.176776695296637, -0.17677669529663687], [12.146446609406727, -0.24999999999999997], [12.176776695296637, -0.3232233047033631], [12.530330085889911, -0.4696699141100893], [12.676776695296637, -0.8232233047033631], [12.75, -0.8535533905932736], [13.0, -0.75], [13.301776695296637, -0.8749999999999998], [13.469669914110089, -0.4696699141100894], [13.875, -0.301776695296637]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.6987302356811824}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.1745001792615488}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.08550434190272, 25.25908336000674, 25.097292662018674, 25.20008021423922, 25.07445104884357]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.08550434190272, 26.17342734470816, 26.108458826911715, 26.328456772168295, 26.139145064099694]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1276289470724237, 1.232127280189598, 1.136095364723459, 1.2104022421392986, 1.138246675571134]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1276289470724237, 1.6987302356811824, 1.5907566813885978, 1.517642217458672, 1.4312598682073485]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4370167144324588, 1.5335430130960406, 1.4372678903063476, 1.5553477001603004, 1.3920338087687738]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4370167144324588, 2.1927376298330534, 1.887591998522829, 1.973615404928413, 1.667019540842749]}}