{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:23.082144", "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": "2018-Oct-17_to_2018-Oct-22_50.0_-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": 2018100002091}, "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": "October 17 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2018"}, "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": 59256.09087522485}, "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"]}, "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": 50.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "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": -13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.75, -18.5], [47.97, -17.97], [48.5, -17.75], [48.8, -17.87], [48.85, -17.75], [48.82, -17.68], [48.47, -17.53], [48.25, -17.0], [48.47, -16.47], [49.0, -16.25], [49.3, -16.37], [49.35, -16.25], [49.25, -16.0], [49.47, -15.47], [50.0, -15.25], [50.53, -15.47], [50.75, -16.0], [50.65, -16.25], [50.75, -16.5], [50.53, -17.03], [50.13, -17.2], [50.25, -17.5], [50.15, -17.75], [50.25, -18.0], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [48.97, -19.53], [48.8, -19.12], [48.5, -19.25], [47.97, -19.03], [47.75, -18.5]]], [[[48.97, -14.53], [48.75, -14.0], [48.97, -13.47], [49.5, -13.25], [50.03, -13.47], [50.25, -14.0], [50.03, -14.53], [49.5, -14.75], [48.97, -14.53]]]]}, "2018-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.97, -14.97], [49.5, -14.75], [49.75, -14.85], [50.0, -14.75], [50.53, -14.97], [50.75, -15.5], [50.65, -15.75], [50.75, -16.0], [50.65, -16.25], [50.75, -16.5], [50.53, -17.03], [50.18, -17.18], [50.15, -17.25], [50.25, -17.5], [50.15, -17.75], [50.25, -18.0], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [48.97, -19.53], [48.8, -19.12], [48.5, -19.25], [47.97, -19.03], [47.75, -18.5], [47.97, -17.97], [48.32, -17.82], [48.35, -17.75], [48.25, -17.5], [48.35, -17.25]]], [[[48.97, -13.47], [49.5, -13.25], [49.75, -13.35], [50.0, -13.25], [50.53, -13.47], [50.75, -14.0], [50.53, -14.53], [50.0, -14.75], [49.75, -14.65], [49.5, -14.75], [48.97, -14.53], [48.75, -14.0], [48.97, -13.47]]]]}, "2018-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, -17.5], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.97, -14.97], [49.32, -14.82], [49.38, -14.7], [48.97, -14.53], [48.75, -14.0], [48.97, -13.47], [49.5, -13.25], [49.75, -13.35], [50.0, -13.25], [50.53, -13.47], [50.75, -14.0], [50.54, -14.5], [50.68, -14.82], [51.03, -14.97], [51.25, -15.5], [51.03, -16.03], [50.68, -16.18], [50.65, -16.25], [50.75, -16.5], [50.53, -17.03], [50.18, -17.18], [50.15, -17.25], [50.25, -17.5], [50.15, -17.75], [50.25, -18.0], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [48.97, -19.53], [48.8, -19.12], [48.5, -19.25], [47.97, -19.03], [47.75, -18.5], [47.97, -17.97], [48.32, -17.82], [48.35, -17.75], [48.25, -17.5]]]]}, "2018-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, -16.97], [48.82, -16.82], [48.85, -16.75], [48.75, -16.5], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.97, -14.97], [49.32, -14.82], [49.35, -14.75], [49.25, -14.5], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.68, -14.82], [51.03, -14.97], [51.25, -15.5], [51.03, -16.03], [50.68, -16.18], [50.65, -16.25], [50.75, -16.5], [50.53, -17.03], [50.18, -17.18], [50.15, -17.25], [50.25, -17.5], [50.03, -18.03], [49.68, -18.18], [49.53, -18.53], [49.0, -18.75], [48.47, -18.53], [48.25, -18.0], [48.35, -17.75], [48.25, -17.5], [48.47, -16.97]]]]}, "2018-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, -16.97], [48.82, -16.82], [48.85, -16.75], [48.75, -16.5], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.97, -14.97], [49.32, -14.82], [49.35, -14.75], [49.25, -14.5], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.68, -14.82], [51.03, -14.97], [51.25, -15.5], [51.03, -16.03], [50.68, -16.18], [50.65, -16.25], [50.75, -16.5], [50.53, -17.03], [50.18, -17.18], [50.15, -17.25], [50.25, -17.5], [50.03, -18.03], [49.68, -18.18], [49.53, -18.53], [49.0, -18.75], [48.47, -18.53], [48.25, -18.0], [48.35, -17.75], [48.25, -17.5], [48.47, -16.97]]]]}, "2018-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.97, -14.97], [49.32, -14.82], [49.35, -14.75], [49.25, -14.5], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.68, -14.82], [51.03, -14.97], [51.25, -15.5], [51.03, -16.03], [50.68, -16.18], [50.53, -16.53], [50.0, -16.75], [49.75, -16.65], [49.5, -16.75], [48.97, -16.53], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.97, -14.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.9216149063731223}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.0692754017515163}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.607832980815886, 23.60179533582277, 24.04497103459056, 23.656351604557756, 24.54325780670797, 24.1923487380692]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.0741251851598, 25.349351685603608, 26.078345857224406, 25.530095255646927, 26.46097603068739, 26.5553121344671]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5558188351818292, 2.0428858576013806, 2.335785233793765, 1.6951965611531534, 2.524041023703449, 1.9288291019923633]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.818969947777191, 3.068262905506117, 3.9216149063731223, 2.5265916499382683, 3.549104778994945, 2.954963189082207]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4789494666581695, 1.7228883093551879, 2.046884087037925, 1.6349091047491544, 2.5259855431904508, 2.0525855258338432]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.720057460087576, 2.050514059279013, 2.648368671333956, 1.9719559643390638, 3.185987323831433, 3.2940719911911387]}}