{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:33.901987", "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-May-13_to_2020-May-16_2.5_14.0"}, "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": 2020050001893}, "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": "May 13 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 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": 134954.84911959412}, "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": ["Burkina Faso", "Mali", "Niger"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 14.0}, "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": 2.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "2.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.0}, "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": [[[-0.646, 13.75], [-0.677, 13.823], [-1.03, 13.97], [-1.25, 14.5], [-1.03, 15.03], [-0.5, 15.25], [-0.25, 15.146], [0.0, 15.25], [0.25, 15.146], [0.5, 15.25], [1.03, 15.03], [1.25, 14.5], [1.47, 15.03], [1.823, 15.177], [1.97, 15.53], [2.323, 15.677], [2.354, 15.75], [2.25, 16.0], [2.354, 16.25], [2.25, 16.5], [2.47, 17.03], [3.0, 17.25], [3.53, 17.03], [3.677, 16.677], [4.03, 16.53], [4.177, 16.177], [4.25, 16.146], [4.5, 16.25], [5.03, 16.03], [5.177, 15.677], [5.53, 15.53], [5.75, 15.0], [5.53, 14.47], [5.0, 14.25], [4.75, 14.354], [4.625, 14.302], [4.75, 14.0], [4.53, 13.47], [4.0, 13.25], [3.75, 13.354], [3.677, 13.323], [3.53, 12.97], [3.177, 12.823], [3.03, 12.47], [2.677, 12.323], [2.53, 11.97], [2.0, 11.75], [1.75, 11.854], [1.677, 11.823], [1.53, 11.47], [1.0, 11.25], [0.47, 11.47], [0.302, 11.875], [0.0, 11.75], [-0.25, 11.854], [-0.5, 11.75], [-0.75, 11.854], [-1.0, 11.75], [-1.53, 11.97], [-1.75, 12.5], [-1.53, 13.03], [-1.177, 13.177], [-1.03, 13.53], [-0.677, 13.677], [-0.646, 13.75]], [[1.146, 14.25], [1.177, 14.177], [1.25, 14.146], [1.323, 14.177], [1.354, 14.25], [1.25, 14.5], [1.146, 14.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[4.25, 15.0], [4.4696699141100895, 15.530330085889911], [5.0, 15.75], [5.5303300858899105, 15.530330085889911], [5.75, 15.0], [5.5303300858899105, 14.469669914110089], [5.0, 14.25], [4.4696699141100895, 14.469669914110089], [4.25, 15.0]]]}, "2020-05-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-1.176776695296637, 13.176776695296637], [-1.0303300858899107, 13.530330085889911], [-0.6767766952966369, 13.676776695296637], [-0.6464466094067264, 13.75], [-0.6767766952966369, 13.823223304703363], [-1.0303300858899105, 13.969669914110089], [-1.25, 14.5], [-1.0303300858899107, 15.030330085889911], [-0.5, 15.25], [-0.25000000000000006, 15.146446609406727], [0.0, 15.25], [0.24999999999999994, 15.146446609406727], [0.5, 15.25], [1.0303300858899105, 15.030330085889911], [1.25, 14.5], [1.4696699141100893, 15.030330085889911], [1.823223304703363, 15.176776695296637], [1.9696699141100893, 15.530330085889911], [2.323223304703363, 15.676776695296637], [2.3535533905932735, 15.75], [2.25, 16.0], [2.3535533905932735, 16.25], [2.25, 16.5], [2.4696699141100895, 17.03033008588991], [3.0, 17.25], [3.5303300858899105, 17.03033008588991], [3.676776695296637, 16.67677669529664], [4.0303300858899105, 16.53033008588991], [4.1767766952966365, 16.17677669529664], [4.25, 16.146446609406727], [4.5, 16.25], [5.0303300858899105, 16.03033008588991], [5.1767766952966365, 15.676776695296637], [5.5303300858899105, 15.530330085889911], [5.75, 15.0], [5.5303300858899105, 14.469669914110089], [5.0, 14.25], [4.75, 14.353553390593273], [4.625, 14.301776695296637], [4.75, 14.0], [4.5303300858899105, 13.469669914110089], [4.0, 13.25], [3.75, 13.353553390593273], [3.676776695296637, 13.323223304703363], [3.5303300858899105, 12.969669914110089], [3.176776695296637, 12.823223304703363], [3.0303300858899105, 12.469669914110089], [2.676776695296637, 12.323223304703363], [2.5303300858899105, 11.969669914110089], [2.0, 11.75], [1.75, 11.853553390593273], [1.676776695296637, 11.823223304703363], [1.5303300858899107, 11.469669914110089], [1.0, 11.25], [0.4696699141100894, 11.469669914110089], [0.301776695296637, 11.875], [0.0, 11.75], [-0.24999999999999997, 11.853553390593273], [-0.5, 11.75], [-0.75, 11.853553390593273], [-1.0, 11.75], [-1.5303300858899105, 11.969669914110089], [-1.75, 12.5], [-1.5303300858899107, 13.030330085889911], [-1.176776695296637, 13.176776695296637]], [[1.25, 14.5], [1.1464466094067263, 14.25], [1.1767766952966368, 14.176776695296637], [1.25, 14.146446609406727], [1.323223304703363, 14.176776695296637], [1.3535533905932737, 14.25], [1.25, 14.5]]]}, "2020-05-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-1.176776695296637, 13.176776695296637], [-1.0303300858899107, 13.530330085889911], [-0.6767766952966369, 13.676776695296637], [-0.6464466094067264, 13.75], [-0.6767766952966369, 13.823223304703363], [-1.0303300858899105, 13.969669914110089], [-1.25, 14.5], [-1.0303300858899107, 15.030330085889911], [-0.5, 15.25], [-0.25000000000000006, 15.146446609406727], [0.0, 15.25], [0.24999999999999994, 15.146446609406727], [0.5, 15.25], [1.0303300858899105, 15.030330085889911], [1.25, 14.5], [1.4696699141100893, 15.030330085889911], [1.823223304703363, 15.176776695296637], [1.9696699141100893, 15.530330085889911], [2.323223304703363, 15.676776695296637], [2.3535533905932735, 15.75], [2.25, 16.0], [2.3535533905932735, 16.25], [2.25, 16.5], [2.4696699141100895, 17.03033008588991], [3.0, 17.25], [3.5303300858899105, 17.03033008588991], [3.676776695296637, 16.67677669529664], [4.0303300858899105, 16.53033008588991], [4.1767766952966365, 16.17677669529664], [4.25, 16.146446609406727], [4.5, 16.25], [5.0303300858899105, 16.03033008588991], [5.1767766952966365, 15.676776695296637], [5.5303300858899105, 15.530330085889911], [5.75, 15.0], [5.5303300858899105, 14.469669914110089], [5.0, 14.25], [4.75, 14.353553390593273], [4.625, 14.301776695296637], [4.75, 14.0], [4.5303300858899105, 13.469669914110089], [4.0, 13.25], [3.75, 13.353553390593273], [3.676776695296637, 13.323223304703363], [3.5303300858899105, 12.969669914110089], [3.176776695296637, 12.823223304703363], [3.0303300858899105, 12.469669914110089], [2.676776695296637, 12.323223304703363], [2.5303300858899105, 11.969669914110089], [2.0, 11.75], [1.75, 11.853553390593273], [1.676776695296637, 11.823223304703363], [1.5303300858899107, 11.469669914110089], [1.0, 11.25], [0.4696699141100894, 11.469669914110089], [0.301776695296637, 11.875], [0.0, 11.75], [-0.24999999999999997, 11.853553390593273], [-0.5, 11.75], [-0.75, 11.853553390593273], [-1.0, 11.75], [-1.5303300858899105, 11.969669914110089], [-1.75, 12.5], [-1.5303300858899107, 13.030330085889911], [-1.176776695296637, 13.176776695296637]], [[1.25, 14.5], [1.1464466094067263, 14.25], [1.1767766952966368, 14.176776695296637], [1.25, 14.146446609406727], [1.323223304703363, 14.176776695296637], [1.3535533905932737, 14.25], [1.25, 14.5]]]}, "2020-05-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-1.176776695296637, 13.176776695296637], [-1.0303300858899107, 13.530330085889911], [-0.6767766952966369, 13.676776695296637], [-0.6464466094067264, 13.75], [-0.6767766952966369, 13.823223304703363], [-1.0303300858899105, 13.969669914110089], [-1.25, 14.5], [-1.0303300858899107, 15.030330085889911], [-0.5, 15.25], [-0.25000000000000006, 15.146446609406727], [0.0, 15.25], [0.24999999999999994, 15.146446609406727], [0.5, 15.25], [1.0303300858899105, 15.030330085889911], [1.25, 14.5], [1.4696699141100893, 15.030330085889911], [1.823223304703363, 15.176776695296637], [1.9696699141100893, 15.530330085889911], [2.323223304703363, 15.676776695296637], [2.3535533905932735, 15.75], [2.25, 16.0], [2.3535533905932735, 16.25], [2.25, 16.5], [2.4696699141100895, 17.03033008588991], [3.0, 17.25], [3.5303300858899105, 17.03033008588991], [3.676776695296637, 16.67677669529664], [4.0303300858899105, 16.53033008588991], [4.1767766952966365, 16.17677669529664], [4.25, 16.146446609406727], [4.5, 16.25], [5.0303300858899105, 16.03033008588991], [5.25, 15.5], [5.146446609406726, 15.25], [5.25, 15.0], [5.0303300858899105, 14.469669914110089], [4.625, 14.301776695296637], [4.75, 14.0], [4.5303300858899105, 13.469669914110089], [4.0, 13.25], [3.75, 13.353553390593273], [3.676776695296637, 13.323223304703363], [3.5303300858899105, 12.969669914110089], [3.176776695296637, 12.823223304703363], [3.0303300858899105, 12.469669914110089], [2.676776695296637, 12.323223304703363], [2.5303300858899105, 11.969669914110089], [2.0, 11.75], [1.75, 11.853553390593273], [1.676776695296637, 11.823223304703363], [1.5303300858899107, 11.469669914110089], [1.0, 11.25], [0.4696699141100894, 11.469669914110089], [0.301776695296637, 11.875], [0.0, 11.75], [-0.24999999999999997, 11.853553390593273], [-0.5, 11.75], [-0.75, 11.853553390593273], [-1.0, 11.75], [-1.5303300858899105, 11.969669914110089], [-1.75, 12.5], [-1.5303300858899107, 13.030330085889911], [-1.176776695296637, 13.176776695296637]], [[1.25, 14.5], [1.1464466094067263, 14.25], [1.1767766952966368, 14.176776695296637], [1.25, 14.146446609406727], [1.323223304703363, 14.176776695296637], [1.3535533905932737, 14.25], [1.25, 14.5]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.0834077286968977}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.133735510473071}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.93617853832512, 36.52697940820963, 36.57390097347485, 36.69685878538286]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.93617853832512, 37.544276439173984, 38.09471181878695, 37.87702683717379]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.87111908235795, 2.0591268431966894, 2.109998433252602, 2.2411053092852216]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.87111908235795, 2.955609958136165, 2.6904501891556833, 3.0834077286968977]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3865846459385165, 1.417907473596529, 1.403383937340353, 1.4462811554383224]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3865846459385165, 1.895359999690668, 1.780719565135224, 1.7837879979565998]}}