{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:41.565934", "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-27_to_2020-Jul-30_13.5_20.0"}, "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": 2020070003168}, "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 27 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 30 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": 70383.29164591277}, "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": ["Niger"]}, "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": 20.0}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[12.823, 19.177], [12.854, 19.25], [12.823, 19.323], [12.47, 19.47], [12.25, 20.0], [12.47, 20.53], [13.0, 20.75], [13.25, 20.646], [13.5, 20.75], [13.75, 20.646], [13.823, 20.677], [13.97, 21.03], [14.5, 21.25], [15.03, 21.03], [15.25, 20.5], [15.03, 19.97], [14.677, 19.823], [14.625, 19.698], [15.03, 19.53], [15.25, 19.0], [15.146, 18.75], [15.177, 18.677], [15.53, 18.53], [15.75, 18.0], [15.646, 17.75], [15.75, 17.5], [15.646, 17.25], [15.75, 17.0], [15.53, 16.47], [15.177, 16.323], [15.03, 15.97], [14.5, 15.75], [13.97, 15.97], [13.802, 16.375], [13.5, 16.25], [12.97, 16.47], [12.75, 17.0], [12.854, 17.25], [12.823, 17.323], [12.47, 17.47], [12.25, 18.0], [12.354, 18.25], [12.25, 18.5], [12.47, 19.03], [12.823, 19.177]]]}}, "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": {"2020-07-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[13.25, 19.353553390593273], [13.0, 19.25], [12.469669914110089, 19.46966991411009], [12.25, 20.0], [12.469669914110089, 20.53033008588991], [13.0, 20.75], [13.25, 20.646446609406727], [13.5, 20.75], [14.030330085889911, 20.53033008588991], [14.25, 20.0], [14.030330085889911, 19.46966991411009], [13.5, 19.25], [13.25, 19.353553390593273]]]}, "2020-07-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[12.353553390593273, 18.25], [12.25, 18.5], [12.469669914110089, 19.03033008588991], [12.823223304703363, 19.17677669529664], [12.853553390593273, 19.25], [12.823223304703363, 19.32322330470336], [12.469669914110089, 19.46966991411009], [12.25, 20.0], [12.469669914110089, 20.53033008588991], [13.0, 20.75], [13.25, 20.646446609406727], [13.5, 20.75], [13.75, 20.646446609406727], [13.823223304703363, 20.67677669529664], [13.969669914110089, 21.03033008588991], [14.5, 21.25], [15.030330085889911, 21.03033008588991], [15.25, 20.5], [15.030330085889911, 19.96966991411009], [14.676776695296637, 19.82322330470336], [14.625, 19.69822330470336], [15.030330085889911, 19.53033008588991], [15.25, 19.0], [15.146446609406727, 18.75], [15.176776695296637, 18.67677669529664], [15.530330085889911, 18.53033008588991], [15.75, 18.0], [15.646446609406727, 17.75], [15.75, 17.5], [15.646446609406727, 17.25], [15.75, 17.0], [15.530330085889911, 16.46966991411009], [15.176776695296637, 16.32322330470336], [15.030330085889911, 15.969669914110089], [14.5, 15.75], [13.969669914110089, 15.969669914110089], [13.801776695296637, 16.375], [13.5, 16.25], [12.969669914110089, 16.46966991411009], [12.75, 17.0], [12.853553390593273, 17.25], [12.823223304703363, 17.32322330470336], [12.469669914110089, 17.46966991411009], [12.25, 18.0], [12.353553390593273, 18.25]]]}, "2020-07-29T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[12.353553390593273, 18.25], [12.25, 18.5], [12.469669914110089, 19.03033008588991], [12.823223304703363, 19.17677669529664], [12.853553390593273, 19.25], [12.823223304703363, 19.32322330470336], [12.469669914110089, 19.46966991411009], [12.25, 20.0], [12.469669914110089, 20.53033008588991], [13.0, 20.75], [13.25, 20.646446609406727], [13.5, 20.75], [13.75, 20.646446609406727], [13.823223304703363, 20.67677669529664], [13.969669914110089, 21.03033008588991], [14.5, 21.25], [15.030330085889911, 21.03033008588991], [15.25, 20.5], [15.030330085889911, 19.96966991411009], [14.676776695296637, 19.82322330470336], [14.625, 19.69822330470336], [15.030330085889911, 19.53033008588991], [15.25, 19.0], [15.146446609406727, 18.75], [15.176776695296637, 18.67677669529664], [15.530330085889911, 18.53033008588991], [15.75, 18.0], [15.646446609406727, 17.75], [15.75, 17.5], [15.646446609406727, 17.25], [15.75, 17.0], [15.530330085889911, 16.46966991411009], [15.176776695296637, 16.32322330470336], [15.030330085889911, 15.969669914110089], [14.5, 15.75], [13.969669914110089, 15.969669914110089], [13.801776695296637, 16.375], [13.5, 16.25], [12.969669914110089, 16.46966991411009], [12.75, 17.0], [12.853553390593273, 17.25], [12.823223304703363, 17.32322330470336], [12.469669914110089, 17.46966991411009], [12.25, 18.0], [12.353553390593273, 18.25]]]}, "2020-07-30T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[12.353553390593273, 18.25], [12.25, 18.5], [12.469669914110089, 19.03033008588991], [12.823223304703363, 19.17677669529664], [12.853553390593273, 19.25], [12.75, 19.5], [12.853553390593273, 19.75], [12.75, 20.0], [12.969669914110089, 20.53033008588991], [13.5, 20.75], [13.75, 20.646446609406727], [13.823223304703363, 20.67677669529664], [13.969669914110089, 21.03033008588991], [14.5, 21.25], [15.030330085889911, 21.03033008588991], [15.25, 20.5], [15.030330085889911, 19.96966991411009], [14.676776695296637, 19.82322330470336], [14.625, 19.69822330470336], [15.030330085889911, 19.53033008588991], [15.25, 19.0], [15.146446609406727, 18.75], [15.176776695296637, 18.67677669529664], [15.530330085889911, 18.53033008588991], [15.75, 18.0], [15.646446609406727, 17.75], [15.75, 17.5], [15.646446609406727, 17.25], [15.75, 17.0], [15.530330085889911, 16.46966991411009], [15.176776695296637, 16.32322330470336], [15.030330085889911, 15.969669914110089], [14.5, 15.75], [13.969669914110089, 15.969669914110089], [13.801776695296637, 16.375], [13.5, 16.25], [12.969669914110089, 16.46966991411009], [12.75, 17.0], [12.853553390593273, 17.25], [12.823223304703363, 17.32322330470336], [12.469669914110089, 17.46966991411009], [12.25, 18.0], [12.353553390593273, 18.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.2163316335380046}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9275740754716666}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.597536411832266, 34.676827986908904, 35.19994529699824, 34.87792021422746]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.6959725972452, 36.367331874677575, 36.43076008166611, 36.83202161482512]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.440969721733353, 1.7066516108955436, 2.1966651767305216, 1.9196245723017125]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.4455544604352326, 2.3145832960244093, 3.2163316335380046, 2.5603827483141117]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2345004955048808, 1.3677656341583624, 1.6943714804067163, 1.4223621326178568]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.243645723617006, 1.6253239554921393, 2.0949413379183435, 1.6765334413462072]}}