{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:30.125935", "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": "2023-May-16_to_2023-May-21_332.5_66.0"}, "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": 2023050002115}, "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 16 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 21 2023"}, "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": 129981.69126765965}, "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": ["Iceland"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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", "Greenland Sea", "Reykjanes Ridge"]}, "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": 66.0}, "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": 332.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "332.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 329.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 335.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-25.25, 62.5], [-25.35, 62.25], [-25.25, 62.0], [-25.47, 61.47], [-26.0, 61.25], [-26.25, 61.35], [-26.5, 61.25], [-26.75, 61.35], [-27.0, 61.25], [-27.25, 61.35], [-27.5, 61.25], [-27.75, 61.35], [-28.0, 61.25], [-28.53, 61.47], [-28.68, 61.82], [-28.75, 61.85], [-29.0, 61.75], [-29.25, 61.85], [-29.5, 61.75], [-30.03, 61.97], [-30.18, 62.32], [-30.53, 62.47], [-30.68, 62.82], [-31.03, 62.97], [-31.25, 63.5], [-31.15, 63.75], [-31.25, 64.0], [-31.04, 64.5], [-31.25, 65.0], [-31.03, 65.53], [-30.62, 65.7], [-30.75, 66.0], [-30.53, 66.53], [-30.18, 66.68], [-30.03, 67.03], [-29.62, 67.2], [-29.75, 67.5], [-29.53, 68.03], [-29.0, 68.25], [-28.75, 68.15], [-28.5, 68.25], [-27.97, 68.03], [-27.82, 67.68], [-27.75, 67.65], [-27.5, 67.75], [-27.25, 67.65], [-27.0, 67.75], [-26.47, 67.53], [-26.32, 67.18], [-26.25, 67.15], [-26.0, 67.25], [-25.75, 67.15], [-25.68, 67.18], [-25.53, 67.53], [-25.0, 67.75], [-24.47, 67.53], [-24.25, 67.0], [-24.35, 66.75], [-24.25, 66.5], [-24.37, 66.2], [-23.97, 66.03], [-23.75, 65.5], [-23.85, 65.25], [-23.75, 65.0], [-23.97, 64.47], [-24.32, 64.32], [-24.47, 63.97], [-24.82, 63.82], [-24.85, 63.75], [-24.75, 63.5], [-24.97, 62.97], [-25.37, 62.8], [-25.25, 62.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-31.25, 64.0], [-31.04000000000002, 64.5], [-31.25, 65.0], [-31.029999999999973, 65.53], [-30.5, 65.75], [-30.25, 65.65], [-30.0, 65.75], [-29.75, 65.65], [-29.5, 65.75], [-29.25, 65.65], [-29.180000000000007, 65.68], [-29.029999999999973, 66.03], [-28.5, 66.25], [-28.25, 66.15], [-28.180000000000007, 66.18], [-28.029999999999973, 66.53], [-27.5, 66.75], [-26.970000000000027, 66.53], [-26.819999999999993, 66.18], [-26.75, 66.15], [-26.5, 66.25], [-26.25, 66.15], [-26.0, 66.25], [-25.75, 66.15], [-25.5, 66.25], [-25.25, 66.15], [-25.0, 66.25], [-24.470000000000027, 66.03], [-24.25, 65.5], [-24.350000000000023, 65.25], [-24.25, 65.0], [-24.350000000000023, 64.75], [-24.25, 64.5], [-24.470000000000027, 63.97], [-24.819999999999993, 63.82], [-24.850000000000023, 63.75], [-24.75, 63.5], [-24.970000000000027, 62.97], [-25.370000000000005, 62.8], [-25.25, 62.5], [-25.350000000000023, 62.25], [-25.25, 62.0], [-25.470000000000027, 61.47], [-26.0, 61.25], [-26.25, 61.35], [-26.5, 61.25], [-26.75, 61.35], [-27.0, 61.25], [-27.25, 61.35], [-27.5, 61.25], [-27.75, 61.35], [-28.0, 61.25], [-28.529999999999973, 61.47], [-28.680000000000007, 61.82], [-28.75, 61.85], [-29.0, 61.75], [-29.25, 61.85], [-29.5, 61.75], [-30.029999999999973, 61.97], [-30.180000000000007, 62.32], [-30.529999999999973, 62.47], [-30.680000000000007, 62.82], [-31.029999999999973, 62.97], [-31.25, 63.5], [-31.149999999999977, 63.75], [-31.25, 64.0]]]]}, "2023-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-31.25, 64.0], [-31.04000000000002, 64.5], [-31.25, 65.0], [-31.029999999999973, 65.53], [-30.5, 65.75], [-30.25, 65.65], [-30.0, 65.75], [-29.75, 65.65], [-29.5, 65.75], [-29.25, 65.65], [-29.180000000000007, 65.68], [-29.029999999999973, 66.03], [-28.5, 66.25], [-28.25, 66.15], [-28.180000000000007, 66.18], [-28.029999999999973, 66.53], [-27.5, 66.75], [-27.0, 66.54], [-26.5, 66.75], [-26.0, 66.54], [-25.5, 66.75], [-24.970000000000027, 66.53], [-24.819999999999993, 66.18], [-24.75, 66.15], [-24.5, 66.25], [-23.970000000000027, 66.03], [-23.75, 65.5], [-23.850000000000023, 65.25], [-23.75, 65.0], [-23.970000000000027, 64.47], [-24.319999999999993, 64.32], [-24.470000000000027, 63.97], [-24.819999999999993, 63.82], [-24.850000000000023, 63.75], [-24.75, 63.5], [-24.970000000000027, 62.97], [-25.370000000000005, 62.8], [-25.25, 62.5], [-25.350000000000023, 62.25], [-25.25, 62.0], [-25.470000000000027, 61.47], [-26.0, 61.25], [-26.25, 61.35], [-26.5, 61.25], [-26.75, 61.35], [-27.0, 61.25], [-27.25, 61.35], [-27.5, 61.25], [-27.75, 61.35], [-28.0, 61.25], [-28.529999999999973, 61.47], [-28.680000000000007, 61.82], [-28.75, 61.85], [-29.0, 61.75], [-29.25, 61.85], [-29.5, 61.75], [-30.029999999999973, 61.97], [-30.180000000000007, 62.32], [-30.529999999999973, 62.47], [-30.680000000000007, 62.82], [-31.029999999999973, 62.97], [-31.25, 63.5], [-31.149999999999977, 63.75], [-31.25, 64.0]]]]}, "2023-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-31.25, 64.0], [-31.04000000000002, 64.5], [-31.25, 65.0], [-31.029999999999973, 65.53], [-30.5, 65.75], [-30.25, 65.65], [-30.0, 65.75], [-29.75, 65.65], [-29.5, 65.75], [-29.25, 65.65], [-29.180000000000007, 65.68], [-29.029999999999973, 66.03], [-28.5, 66.25], [-28.25, 66.15], [-28.180000000000007, 66.18], [-28.029999999999973, 66.53], [-27.5, 66.75], [-27.0, 66.54], [-26.5, 66.75], [-26.0, 66.54], [-25.5, 66.75], [-24.970000000000027, 66.53], [-24.819999999999993, 66.18], [-24.75, 66.15], [-24.5, 66.25], [-23.970000000000027, 66.03], [-23.75, 65.5], [-23.850000000000023, 65.25], [-23.75, 65.0], [-23.970000000000027, 64.47], [-24.319999999999993, 64.32], [-24.470000000000027, 63.97], [-24.819999999999993, 63.82], [-24.850000000000023, 63.75], [-24.75, 63.5], [-24.970000000000027, 62.97], [-25.370000000000005, 62.8], [-25.25, 62.5], [-25.350000000000023, 62.25], [-25.25, 62.0], [-25.470000000000027, 61.47], [-26.0, 61.25], [-26.25, 61.35], [-26.5, 61.25], [-26.75, 61.35], [-27.0, 61.25], [-27.25, 61.35], [-27.5, 61.25], [-27.75, 61.35], [-28.0, 61.25], [-28.529999999999973, 61.47], [-28.680000000000007, 61.82], [-28.75, 61.85], [-29.0, 61.75], [-29.25, 61.85], [-29.5, 61.75], [-30.029999999999973, 61.97], [-30.180000000000007, 62.32], [-30.529999999999973, 62.47], [-30.680000000000007, 62.82], [-31.029999999999973, 62.97], [-31.25, 63.5], [-31.149999999999977, 63.75], [-31.25, 64.0]]]]}, "2023-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-24.75, 63.5], [-24.970000000000027, 62.97], [-25.370000000000005, 62.8], [-25.25, 62.5], [-25.350000000000023, 62.25], [-25.25, 62.0], [-25.470000000000027, 61.47], [-26.0, 61.25], [-26.25, 61.35], [-26.5, 61.25], [-26.75, 61.35], [-27.0, 61.25], [-27.25, 61.35], [-27.5, 61.25], [-27.75, 61.35], [-28.0, 61.25], [-28.529999999999973, 61.47], [-28.69999999999999, 61.88], [-29.0, 61.75], [-29.529999999999973, 61.97], [-29.75, 62.5], [-29.529999999999973, 63.03], [-29.0, 63.25], [-28.5, 63.04], [-28.180000000000007, 63.18], [-28.029999999999973, 63.53], [-27.680000000000007, 63.68], [-27.529999999999973, 64.03], [-27.0, 64.25], [-26.75, 64.15], [-26.5, 64.25], [-26.25, 64.15], [-26.0, 64.25], [-25.75, 64.15], [-25.5, 64.25], [-24.970000000000027, 64.03], [-24.75, 63.5]]], [[[-30.529999999999973, 66.53], [-30.180000000000007, 66.68], [-30.029999999999973, 67.03], [-29.620000000000005, 67.2], [-29.75, 67.5], [-29.529999999999973, 68.03], [-29.0, 68.25], [-28.75, 68.15], [-28.5, 68.25], [-27.970000000000027, 68.03], [-27.819999999999993, 67.68], [-27.75, 67.65], [-27.5, 67.75], [-27.25, 67.65], [-27.0, 67.75], [-26.470000000000027, 67.53], [-26.319999999999993, 67.18], [-26.25, 67.15], [-26.0, 67.25], [-25.75, 67.15], [-25.680000000000007, 67.18], [-25.529999999999973, 67.53], [-25.0, 67.75], [-24.470000000000027, 67.53], [-24.25, 67.0], [-24.350000000000023, 66.75], [-24.25, 66.5], [-24.370000000000005, 66.2], [-23.970000000000027, 66.03], [-23.75, 65.5], [-23.850000000000023, 65.25], [-23.75, 65.0], [-23.970000000000027, 64.47], [-24.5, 64.25], [-24.75, 64.35], [-25.0, 64.25], [-25.25, 64.35], [-25.5, 64.25], [-25.75, 64.35], [-26.0, 64.25], [-26.529999999999973, 64.47], [-26.680000000000007, 64.82], [-26.75, 64.85], [-26.819999999999993, 64.82], [-26.970000000000027, 64.47], [-27.5, 64.25], [-28.029999999999973, 64.47], [-28.180000000000007, 64.82], [-28.25, 64.85], [-28.5, 64.75], [-29.029999999999973, 64.97], [-29.180000000000007, 65.32], [-29.25, 65.35], [-29.370000000000005, 65.3], [-29.25, 65.0], [-29.470000000000027, 64.47], [-30.0, 64.25], [-30.25, 64.35], [-30.5, 64.25], [-31.029999999999973, 64.47], [-31.25, 65.0], [-31.029999999999973, 65.53], [-30.620000000000005, 65.7], [-30.75, 66.0], [-30.529999999999973, 66.53]]]]}, "2023-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-30.75, 66.0], [-30.529999999999973, 66.53], [-30.180000000000007, 66.68], [-30.029999999999973, 67.03], [-29.620000000000005, 67.2], [-29.75, 67.5], [-29.529999999999973, 68.03], [-29.0, 68.25], [-28.75, 68.15], [-28.5, 68.25], [-27.970000000000027, 68.03], [-27.819999999999993, 67.68], [-27.75, 67.65], [-27.5, 67.75], [-27.25, 67.65], [-27.0, 67.75], [-26.470000000000027, 67.53], [-26.319999999999993, 67.18], [-26.25, 67.15], [-26.0, 67.25], [-25.75, 67.15], [-25.680000000000007, 67.18], [-25.529999999999973, 67.53], [-25.0, 67.75], [-24.470000000000027, 67.53], [-24.25, 67.0], [-24.350000000000023, 66.75], [-24.25, 66.5], [-24.470000000000027, 65.97], [-24.819999999999993, 65.82], [-24.970000000000027, 65.47], [-25.5, 65.25], [-26.0, 65.46], [-26.5, 65.25], [-26.80000000000001, 65.38], [-26.970000000000027, 64.97], [-27.5, 64.75], [-27.75, 64.85], [-28.0, 64.75], [-28.25, 64.85], [-28.5, 64.75], [-29.029999999999973, 64.97], [-29.180000000000007, 65.32], [-29.25, 65.35], [-29.5, 65.25], [-29.75, 65.35], [-29.870000000000005, 65.3], [-29.75, 65.0], [-29.970000000000027, 64.47], [-30.5, 64.25], [-31.029999999999973, 64.47], [-31.25, 65.0], [-31.029999999999973, 65.53], [-30.620000000000005, 65.7], [-30.75, 66.0]]]]}, "2023-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-30.029999999999973, 67.03], [-29.620000000000005, 67.2], [-29.75, 67.5], [-29.529999999999973, 68.03], [-29.0, 68.25], [-28.75, 68.15], [-28.5, 68.25], [-27.970000000000027, 68.03], [-27.819999999999993, 67.68], [-27.75, 67.65], [-27.5, 67.75], [-27.25, 67.65], [-27.0, 67.75], [-26.470000000000027, 67.53], [-26.319999999999993, 67.18], [-26.25, 67.15], [-26.0, 67.25], [-25.75, 67.15], [-25.680000000000007, 67.18], [-25.529999999999973, 67.53], [-25.0, 67.75], [-24.470000000000027, 67.53], [-24.25, 67.0], [-24.350000000000023, 66.75], [-24.25, 66.5], [-24.470000000000027, 65.97], [-25.0, 65.75], [-25.25, 65.85], [-25.5, 65.75], [-25.75, 65.85], [-26.0, 65.75], [-26.25, 65.85], [-26.5, 65.75], [-26.75, 65.85], [-27.0, 65.75], [-27.25, 65.85], [-27.319999999999993, 65.82], [-27.470000000000027, 65.47], [-28.0, 65.25], [-28.25, 65.35], [-28.5, 65.25], [-28.75, 65.35], [-29.0, 65.25], [-29.25, 65.35], [-29.5, 65.25], [-29.75, 65.35], [-30.0, 65.25], [-30.529999999999973, 65.47], [-30.75, 66.0], [-30.529999999999973, 66.53], [-30.180000000000007, 66.68], [-30.029999999999973, 67.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8647893804174487}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.1369355852423886}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.293369092510545, 7.238423235751043, 7.317919164588659, 5.6416599836833825, 4.376567238792859, 3.5050711942170096]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.444896701735217, 8.156526547896647, 8.30674068105219, 8.399737888357322, 6.282948065468474, 5.185659830460281]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9515344153433594, 2.006405627330802, 2.084553302501858, 2.1402568695990354, 2.8204479264263944, 2.5318970355146706]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.7247359916356118, 3.8647893804174487, 2.5999739559885597, 3.2539669430187246, 3.64077506377879, 3.0539530234838708]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4080981710451055, 1.411285818890086, 1.4855861577831613, 1.3973582596875367, 1.7566620715836938, 1.6365547736097785]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5527179398561355, 2.023543363348292, 1.7726800736701358, 1.8043341291267545, 2.4484542828559137, 2.0439665394683857]}}