{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:18.004011", "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": "2012-Apr-29_to_2012-May-06_37.0_10.5"}, "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": 2012040002783}, "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": "April 29 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 06 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 118609.70485871479}, "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": ["Ethiopia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "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": 10.5}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 39.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.47, 9.47], [34.25, 10.0], [34.47, 10.53], [35.0, 10.75], [35.25, 10.65], [35.5, 10.75], [35.8, 10.63], [35.97, 11.03], [36.5, 11.25], [36.75, 11.15], [37.0, 11.25], [37.53, 11.03], [37.75, 10.5], [37.53, 9.97], [37.0, 9.75], [36.75, 9.85], [36.5, 9.75], [36.2, 9.88], [36.03, 9.47], [35.5, 9.25], [35.25, 9.35], [35.0, 9.25], [34.47, 9.47]]]]}, "2012-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.85, 10.25], [33.75, 10.5], [33.97, 11.03], [34.32, 11.18], [34.47, 11.53], [35.0, 11.75], [35.43, 11.57], [35.25, 12.0], [35.47, 12.53], [35.82, 12.68], [35.85, 12.75], [35.75, 13.0], [35.97, 13.53], [36.5, 13.75], [37.03, 13.53], [37.25, 13.0], [37.15, 12.75], [37.25, 12.5], [37.15, 12.25], [37.25, 12.0], [37.15, 11.75], [37.25, 11.5], [37.15, 11.25], [37.18, 11.18], [37.25, 11.15], [37.5, 11.25], [38.03, 11.03], [38.25, 10.5], [38.13, 10.2], [38.53, 10.03], [38.75, 9.5], [38.53, 8.97], [38.0, 8.75], [37.47, 8.97], [37.25, 9.5], [37.38, 9.8], [37.25, 9.85], [37.18, 9.82], [37.03, 9.47], [36.68, 9.32], [36.65, 9.25], [36.75, 9.0], [36.53, 8.47], [36.18, 8.32], [36.15, 8.25], [36.25, 8.0], [36.03, 7.47], [35.5, 7.25], [34.97, 7.47], [34.75, 8.0], [34.85, 8.25], [34.82, 8.32], [34.47, 8.47], [34.32, 8.82], [33.97, 8.97], [33.75, 9.5], [33.85, 9.75], [33.75, 10.0], [33.85, 10.25]], [[35.82, 11.18], [35.85, 11.25], [35.82, 11.32], [35.57, 11.43], [35.68, 11.18], [35.75, 11.15], [35.82, 11.18]]]]}, "2012-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.85, 10.25], [33.75, 10.5], [33.97, 11.03], [34.32, 11.18], [34.47, 11.53], [35.0, 11.75], [35.43, 11.57], [35.25, 12.0], [35.47, 12.53], [35.82, 12.68], [35.85, 12.75], [35.75, 13.0], [35.97, 13.53], [36.5, 13.75], [37.03, 13.53], [37.25, 13.0], [37.15, 12.75], [37.25, 12.5], [37.15, 12.25], [37.18, 12.18], [37.53, 12.03], [37.75, 11.5], [37.63, 11.2], [38.03, 11.03], [38.25, 10.5], [38.13, 10.2], [38.53, 10.03], [38.75, 9.5], [38.53, 8.97], [38.0, 8.75], [37.47, 8.97], [37.3, 9.38], [37.18, 9.32], [37.03, 8.97], [36.68, 8.82], [36.53, 8.47], [36.18, 8.32], [36.15, 8.25], [36.25, 8.0], [36.03, 7.47], [35.5, 7.25], [34.97, 7.47], [34.75, 8.0], [34.85, 8.25], [34.82, 8.32], [34.47, 8.47], [34.32, 8.82], [33.97, 8.97], [33.75, 9.5], [33.85, 9.75], [33.75, 10.0], [33.85, 10.25]], [[35.82, 11.18], [35.85, 11.25], [35.82, 11.32], [35.57, 11.43], [35.68, 11.18], [35.75, 11.15], [35.82, 11.18]]]]}, "2012-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.85, 10.25], [33.75, 10.5], [33.97, 11.03], [34.32, 11.18], [34.47, 11.53], [35.0, 11.75], [35.43, 11.57], [35.25, 12.0], [35.47, 12.53], [35.82, 12.68], [35.85, 12.75], [35.75, 13.0], [35.97, 13.53], [36.5, 13.75], [37.03, 13.53], [37.25, 13.0], [37.15, 12.75], [37.25, 12.5], [37.15, 12.25], [37.18, 12.18], [37.53, 12.03], [37.75, 11.5], [37.63, 11.2], [37.8, 11.13], [37.97, 11.53], [38.32, 11.68], [38.47, 12.03], [39.0, 12.25], [39.53, 12.03], [39.75, 11.5], [39.53, 10.97], [39.18, 10.82], [39.15, 10.75], [39.25, 10.5], [39.15, 10.25], [39.25, 10.0], [39.15, 9.75], [39.25, 9.5], [39.03, 8.97], [38.5, 8.75], [38.25, 8.85], [38.0, 8.75], [37.75, 8.85], [37.68, 8.82], [37.53, 8.47], [37.0, 8.25], [36.5, 8.46], [36.18, 8.32], [36.15, 8.25], [36.25, 8.0], [36.03, 7.47], [35.5, 7.25], [34.97, 7.47], [34.75, 8.0], [34.85, 8.25], [34.82, 8.32], [34.47, 8.47], [34.32, 8.82], [33.97, 8.97], [33.75, 9.5], [33.85, 9.75], [33.75, 10.0], [33.85, 10.25]], [[35.82, 11.18], [35.85, 11.25], [35.82, 11.32], [35.57, 11.43], [35.68, 11.18], [35.75, 11.15], [35.82, 11.18]]]]}, "2012-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.75, 10.5], [35.97, 11.03], [36.38, 11.2], [36.25, 11.5], [36.47, 12.03], [37.0, 12.25], [37.53, 12.03], [37.75, 11.5], [37.63, 11.2], [37.8, 11.13], [37.97, 11.53], [38.32, 11.68], [38.47, 12.03], [39.0, 12.25], [39.53, 12.03], [39.75, 11.5], [39.53, 10.97], [39.18, 10.82], [39.15, 10.75], [39.25, 10.5], [39.15, 10.25], [39.25, 10.0], [39.15, 9.75], [39.25, 9.5], [39.03, 8.97], [38.5, 8.75], [38.25, 8.85], [38.0, 8.75], [37.75, 8.85], [37.68, 8.82], [37.53, 8.47], [37.0, 8.25], [36.47, 8.47], [36.32, 8.82], [36.25, 8.85], [36.0, 8.75], [35.47, 8.97], [35.25, 9.5], [35.47, 10.03], [35.82, 10.18], [35.85, 10.25], [35.75, 10.5]]]]}, "2012-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.0, 11.25], [37.25, 11.15], [37.5, 11.25], [37.8, 11.13], [37.97, 11.53], [38.32, 11.68], [38.47, 12.03], [39.0, 12.25], [39.53, 12.03], [39.75, 11.5], [39.53, 10.97], [39.18, 10.82], [39.15, 10.75], [39.25, 10.5], [39.15, 10.25], [39.25, 10.0], [39.15, 9.75], [39.25, 9.5], [39.03, 8.97], [38.5, 8.75], [38.25, 8.85], [38.0, 8.75], [37.75, 8.85], [37.68, 8.82], [37.53, 8.47], [37.0, 8.25], [36.47, 8.47], [36.25, 9.0], [36.38, 9.3], [35.97, 9.47], [35.75, 10.0], [35.97, 10.53], [36.32, 10.68], [36.47, 11.03], [37.0, 11.25]]]]}, "2012-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.0, 11.25], [37.25, 11.15], [37.5, 11.25], [38.03, 11.03], [38.25, 10.5], [38.13, 10.2], [38.53, 10.03], [38.75, 9.5], [38.53, 8.97], [38.0, 8.75], [37.75, 8.85], [37.5, 8.75], [36.97, 8.97], [36.82, 9.32], [36.75, 9.35], [36.5, 9.25], [35.97, 9.47], [35.75, 10.0], [35.97, 10.53], [36.32, 10.68], [36.47, 11.03], [37.0, 11.25]]]]}, "2012-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 9.97], [36.25, 10.5], [36.47, 11.03], [37.0, 11.25], [37.25, 11.15], [37.5, 11.25], [38.03, 11.03], [38.25, 10.5], [38.03, 9.97], [37.5, 9.75], [37.25, 9.85], [37.0, 9.75], [36.47, 9.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.033216701561514}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.0446645956041456}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.302655352828424, 27.735428768420036, 28.045169706664296, 27.96535880513153, 25.41696249673663, 24.431093631204703, 24.84591554196487, 24.061639415662512]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.41800651230136, 33.35901664927269, 33.483274115420045, 35.27169034744634, 29.876723066715897, 27.354498755295424, 26.83329903690776, 25.619977578137025]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.5335841967910824, 2.5069572757186327, 3.0422309996365158, 3.6107923547691976, 2.9039497952745847, 2.7412371621426055, 3.3585724061166977, 2.867587335201847]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.741484381788837, 3.0694906523248164, 4.195529537091545, 5.033216701561514, 3.952577744177745, 3.8264276072334837, 3.942814134190087, 2.898982565140102]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3686529770918014, 1.4641182178326086, 1.7747873685599185, 2.0747231770124848, 1.6944528421700809, 1.6306588756234612, 1.8548521848710644, 1.6376417791947881]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4332649530507797, 1.7280561847264517, 2.2996072494260966, 2.6752233211628282, 2.5353057718065766, 2.5084492943667187, 2.2066673689820475, 1.638667179189934]}}