{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:01.957646", "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-Apr-16_to_2023-Apr-28_48.5_-16.0"}, "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": 2023040002005}, "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 16 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 28 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 142725.52559123182}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "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": ["Indian Ocean", "Mozambique Channel"]}, "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": -16.0}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.5, -14.25], [48.03, -14.47], [48.25, -15.0], [48.03, -15.53], [47.5, -15.75], [46.97, -15.53], [46.75, -15.0], [46.97, -14.47], [47.5, -14.25]]]]}, "2023-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.5, -14.25], [48.03, -14.47], [48.25, -15.0], [48.03, -15.53], [47.5, -15.75], [46.97, -15.53], [46.75, -15.0], [46.97, -14.47], [47.5, -14.25]]]]}, "2023-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -15.53], [46.75, -15.0], [46.97, -14.47], [47.5, -14.25], [47.75, -14.35], [48.0, -14.25], [48.25, -14.35], [48.5, -14.25], [49.03, -14.47], [49.25, -15.0], [49.03, -15.53], [48.5, -15.75], [48.25, -15.65], [48.0, -15.75], [47.75, -15.65], [47.5, -15.75], [46.97, -15.53]]]]}, "2023-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -15.53], [46.75, -15.0], [46.97, -14.47], [47.5, -14.25], [47.75, -14.35], [47.82, -14.32], [47.85, -14.25], [47.75, -14.0], [47.96, -13.5], [47.75, -13.0], [47.97, -12.47], [48.5, -12.25], [49.03, -12.47], [49.25, -13.0], [49.04, -13.5], [49.25, -14.0], [49.15, -14.25], [49.25, -14.5], [49.15, -14.75], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.03, -16.03], [48.5, -16.25], [47.97, -16.03], [47.82, -15.68], [47.75, -15.65], [47.5, -15.75], [46.97, -15.53]]]]}, "2023-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.82, -12.82], [47.97, -12.47], [48.5, -12.25], [49.03, -12.47], [49.25, -13.0], [49.04, -13.5], [49.25, -14.0], [49.15, -14.25], [49.25, -14.5], [49.15, -14.75], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.03, -16.03], [48.5, -16.25], [47.97, -16.03], [47.82, -15.68], [47.47, -15.53], [47.25, -15.0], [47.38, -14.7], [46.97, -14.53], [46.75, -14.0], [46.97, -13.47], [47.32, -13.32], [47.47, -12.97], [47.82, -12.82]]]]}, "2023-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.82, -12.82], [47.97, -12.47], [48.5, -12.25], [49.03, -12.47], [49.25, -13.0], [49.15, -13.25], [49.25, -13.5], [49.15, -13.75], [49.25, -14.0], [49.15, -14.25], [49.25, -14.5], [49.04, -15.0], [49.18, -15.32], [49.53, -15.47], [49.75, -16.0], [49.63, -16.3], [50.03, -16.47], [50.25, -17.0], [50.03, -17.53], [49.63, -17.7], [49.75, -18.0], [49.53, -18.53], [49.0, -18.75], [48.47, -18.53], [48.32, -18.18], [47.97, -18.03], [47.82, -17.68], [47.47, -17.53], [47.25, -17.0], [47.35, -16.75], [47.25, -16.5], [47.47, -15.97], [47.82, -15.82], [47.85, -15.75], [47.75, -15.5], [47.96, -15.0], [47.82, -14.68], [47.75, -14.65], [47.5, -14.75], [46.97, -14.53], [46.75, -14.0], [46.97, -13.47], [47.32, -13.32], [47.47, -12.97], [47.82, -12.82]]]]}, "2023-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.82, -12.82], [47.97, -12.47], [48.5, -12.25], [49.03, -12.47], [49.25, -13.0], [49.15, -13.25], [49.25, -13.5], [49.13, -13.8], [49.53, -13.97], [49.75, -14.5], [49.54, -15.0], [49.75, -15.5], [49.65, -15.75], [49.68, -15.82], [50.03, -15.97], [50.25, -16.5], [50.15, -16.75], [50.25, -17.0], [50.03, -17.53], [49.63, -17.7], [49.75, -18.0], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.5, -19.25], [47.97, -19.03], [47.75, -18.5], [47.96, -18.0], [47.82, -17.68], [47.47, -17.53], [47.25, -17.0], [47.35, -16.75], [47.25, -16.5], [47.47, -15.97], [47.82, -15.82], [47.85, -15.75], [47.75, -15.5], [47.97, -14.97], [48.38, -14.8], [48.3, -14.62], [48.0, -14.75], [47.75, -14.65], [47.5, -14.75], [46.97, -14.53], [46.75, -14.0], [46.97, -13.47], [47.32, -13.32], [47.47, -12.97], [47.82, -12.82]]]]}, "2023-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.47, -15.97], [47.82, -15.82], [47.85, -15.75], [47.75, -15.5], [47.88, -15.2], [47.47, -15.03], [47.25, -14.5], [47.35, -14.25], [47.25, -14.0], [47.35, -13.75], [47.25, -13.5], [47.47, -12.97], [48.0, -12.75], [48.25, -12.85], [48.5, -12.75], [49.03, -12.97], [49.25, -13.5], [49.13, -13.8], [49.53, -13.97], [49.75, -14.5], [49.65, -14.75], [49.75, -15.0], [49.65, -15.25], [49.68, -15.32], [50.03, -15.47], [50.25, -16.0], [50.15, -16.25], [50.25, -16.5], [50.15, -16.75], [50.25, -17.0], [50.03, -17.53], [49.63, -17.7], [49.75, -18.0], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.5, -19.25], [47.97, -19.03], [47.75, -18.5], [47.85, -18.25], [47.75, -18.0], [47.85, -17.75], [47.82, -17.68], [47.47, -17.53], [47.25, -17.0], [47.35, -16.75], [47.25, -16.5], [47.47, -15.97]]]]}, "2023-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.35, -16.75], [47.25, -16.5], [47.47, -15.97], [47.82, -15.82], [47.97, -15.47], [48.32, -15.32], [48.35, -15.25], [48.32, -15.18], [48.25, -15.15], [48.0, -15.25], [47.47, -15.03], [47.25, -14.5], [47.35, -14.25], [47.25, -14.0], [47.35, -13.75], [47.25, -13.5], [47.47, -12.97], [48.0, -12.75], [48.25, -12.85], [48.5, -12.75], [49.0, -12.96], [49.5, -12.75], [49.75, -12.85], [50.0, -12.75], [50.53, -12.97], [50.75, -13.5], [50.65, -13.75], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.75, -15.0], [50.65, -15.25], [50.75, -15.5], [50.53, -16.03], [50.18, -16.18], [50.15, -16.25], [50.25, -16.5], [50.15, -16.75], [50.25, -17.0], [50.15, -17.25], [50.25, -17.5], [50.15, -17.75], [50.25, -18.0], [50.03, -18.53], [49.63, -18.7], [49.75, -19.0], [49.53, -19.53], [49.0, -19.75], [48.47, -19.53], [48.32, -19.18], [47.97, -19.03], [47.75, -18.5], [47.85, -18.25], [47.82, -18.18], [47.47, -18.03], [47.25, -17.5], [47.35, -17.25], [47.25, -17.0], [47.35, -16.75]]]]}, "2023-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, -17.25], [46.75, -17.0], [46.97, -16.47], [47.32, -16.32], [47.47, -15.97], [47.82, -15.82], [47.85, -15.75], [47.75, -15.5], [47.85, -15.25], [47.82, -15.18], [47.47, -15.03], [47.25, -14.5], [47.35, -14.25], [47.25, -14.0], [47.35, -13.75], [47.25, -13.5], [47.47, -12.97], [48.0, -12.75], [48.25, -12.85], [48.5, -12.75], [49.0, -12.96], [49.5, -12.75], [49.75, -12.85], [50.0, -12.75], [50.53, -12.97], [50.75, -13.5], [50.65, -13.75], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.75, -15.0], [50.65, -15.25], [50.75, -15.5], [50.53, -16.03], [50.18, -16.18], [50.15, -16.25], [50.25, -16.5], [50.15, -16.75], [50.25, -17.0], [50.15, -17.25], [50.25, -17.5], [50.15, -17.75], [50.25, -18.0], [50.03, -18.53], [49.63, -18.7], [49.75, -19.0], [49.53, -19.53], [49.0, -19.75], [48.47, -19.53], [48.32, -19.18], [47.97, -19.03], [47.8, -18.62], [47.5, -18.75], [46.97, -18.53], [46.75, -18.0], [46.85, -17.75], [46.75, -17.5], [46.85, -17.25]]]]}, "2023-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, -17.25], [46.75, -17.0], [46.97, -16.47], [47.32, -16.32], [47.47, -15.97], [47.82, -15.82], [47.85, -15.75], [47.75, -15.5], [47.85, -15.25], [47.82, -15.18], [47.47, -15.03], [47.25, -14.5], [47.35, -14.25], [47.25, -14.0], [47.47, -13.47], [48.0, -13.25], [48.53, -13.47], [48.68, -13.82], [48.75, -13.85], [48.82, -13.82], [48.85, -13.75], [48.75, -13.5], [48.97, -12.97], [49.5, -12.75], [49.75, -12.85], [50.0, -12.75], [50.53, -12.97], [50.75, -13.5], [50.65, -13.75], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.75, -15.0], [50.65, -15.25], [50.75, -15.5], [50.53, -16.03], [50.18, -16.18], [50.15, -16.25], [50.25, -16.5], [50.15, -16.75], [50.25, -17.0], [50.15, -17.25], [50.25, -17.5], [50.15, -17.75], [50.25, -18.0], [50.03, -18.53], [49.63, -18.7], [49.75, -19.0], [49.53, -19.53], [49.0, -19.75], [48.47, -19.53], [48.32, -19.18], [47.97, -19.03], [47.8, -18.62], [47.5, -18.75], [46.97, -18.53], [46.75, -18.0], [46.85, -17.75], [46.75, -17.5], [46.85, -17.25]]]]}, "2023-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, -17.25], [46.75, -17.0], [46.97, -16.47], [47.32, -16.32], [47.47, -15.97], [47.82, -15.82], [47.85, -15.75], [47.75, -15.5], [47.85, -15.25], [47.82, -15.18], [47.47, -15.03], [47.25, -14.5], [47.47, -13.97], [48.0, -13.75], [48.53, -13.97], [48.68, -14.32], [49.03, -14.47], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.15, -15.75], [49.25, -16.0], [49.15, -16.25], [49.25, -16.5], [49.03, -17.03], [48.63, -17.2], [48.75, -17.5], [48.53, -18.03], [48.18, -18.18], [48.03, -18.53], [47.5, -18.75], [46.97, -18.53], [46.75, -18.0], [46.85, -17.75], [46.75, -17.5], [46.85, -17.25]]]]}, "2023-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.0, -13.75], [48.53, -13.97], [48.75, -14.5], [48.53, -15.03], [48.0, -15.25], [47.47, -15.03], [47.25, -14.5], [47.47, -13.97], [48.0, -13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.9239446208597997}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7839936335464022}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.891531734598402, 28.79722445865775, 27.679915504530697, 26.50396602709725, 26.38765758242198, 25.122064320053084, 24.775097615072013, 24.19207549792992, 24.706905893108967, 24.942480358931846, 24.294529063040784, 24.79701802624504, 27.511504387839125]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.891531734598402, 28.79722445865775, 29.21729369324254, 29.351934104397742, 28.74428261024076, 28.170991702939375, 28.62298826393709, 27.904070405906452, 27.604115754986537, 27.800398764020144, 27.588041489032605, 27.44477406358095, 27.511504387839125]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9940838838593322, 0.9004847056922927, 1.1155024224925114, 1.225858754058793, 0.8721929055179645, 1.2560621053009948, 1.6083642209025069, 1.5507974781761207, 2.081984735618447, 2.2781193206472428, 1.8860415969127327, 1.5388471958804644, 1.299033326694655]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.9940838838593322, 0.9004847056922927, 1.3140884610903072, 1.6880717604902884, 1.1511718828367066, 1.71226754532114, 2.316807803559527, 2.0438141153240963, 3.9239446208597997, 3.826468293263531, 2.7329630414949406, 1.834719301167297, 1.299033326694655]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5374324952895113, 1.4024316463990145, 1.6258432127140006, 1.8306474985474712, 1.480030151060993, 1.6065074209148882, 1.8039898210821548, 1.6614258590702153, 2.2465442618976312, 2.4937578099544835, 2.0139663925993476, 1.6116291857031544, 1.9639498247000071]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5374324952895113, 1.4024316463990145, 2.0796498567536954, 2.3169089276399384, 1.7792870278118682, 2.2489670168194467, 2.318753137363087, 2.444615974745835, 3.187492198427662, 3.6013626571915394, 2.7956004061252577, 1.8709387264993442, 1.9639498247000071]}}