{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:49.911895", "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": "2010-Oct-20_to_2010-Oct-24_45.0_-17.5"}, "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": 2010100000799}, "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 20 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 24 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 61126.68663749492}, "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": []}, "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": -17.5}, "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": 45.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, -17.25], [44.25, -17.0], [44.47, -16.47], [45.0, -16.25], [45.53, -16.47], [45.68, -16.82], [46.03, -16.97], [46.25, -17.5], [46.03, -18.03], [45.68, -18.18], [45.53, -18.53], [45.0, -18.75], [44.47, -18.53], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.35, -17.25]]]]}, "2010-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, -19.75], [44.25, -19.5], [44.35, -19.25], [44.25, -19.0], [44.46, -18.5], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.35, -17.25], [44.25, -17.0], [44.47, -16.47], [45.0, -16.25], [45.53, -16.47], [45.68, -16.82], [46.03, -16.97], [46.25, -17.5], [46.04, -18.0], [46.25, -18.5], [46.15, -18.75], [46.25, -19.0], [46.15, -19.25], [46.18, -19.32], [46.53, -19.47], [46.75, -20.0], [46.53, -20.53], [46.18, -20.68], [46.15, -20.75], [46.25, -21.0], [46.03, -21.53], [45.5, -21.75], [44.97, -21.53], [44.82, -21.18], [44.47, -21.03], [44.25, -20.5], [44.35, -20.25], [44.25, -20.0], [44.35, -19.75]]]]}, "2010-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, -20.97], [44.32, -20.82], [44.35, -20.75], [44.25, -20.5], [44.35, -20.25], [44.25, -20.0], [44.35, -19.75], [44.25, -19.5], [44.35, -19.25], [44.25, -19.0], [44.46, -18.5], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.35, -17.25], [44.25, -17.0], [44.47, -16.47], [45.0, -16.25], [45.53, -16.47], [45.68, -16.82], [46.03, -16.97], [46.25, -17.5], [46.04, -18.0], [46.18, -18.32], [46.53, -18.47], [46.75, -19.0], [46.65, -19.25], [46.75, -19.5], [46.65, -19.75], [46.75, -20.0], [46.53, -20.53], [46.18, -20.68], [46.15, -20.75], [46.25, -21.0], [46.03, -21.53], [45.68, -21.68], [45.53, -22.03], [45.18, -22.18], [45.03, -22.53], [44.5, -22.75], [43.97, -22.53], [43.75, -22.0], [43.85, -21.75], [43.75, -21.5], [43.97, -20.97]]]]}, "2010-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, -20.97], [44.32, -20.82], [44.35, -20.75], [44.25, -20.5], [44.35, -20.25], [44.25, -20.0], [44.35, -19.75], [44.25, -19.5], [44.35, -19.25], [44.25, -19.0], [44.46, -18.5], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.47, -16.97], [45.0, -16.75], [45.53, -16.97], [45.75, -17.5], [45.65, -17.75], [45.68, -17.82], [46.03, -17.97], [46.18, -18.32], [46.53, -18.47], [46.75, -19.0], [46.65, -19.25], [46.75, -19.5], [46.65, -19.75], [46.75, -20.0], [46.53, -20.53], [46.18, -20.68], [46.15, -20.75], [46.25, -21.0], [46.03, -21.53], [45.68, -21.68], [45.53, -22.03], [45.18, -22.18], [45.03, -22.53], [44.5, -22.75], [43.97, -22.53], [43.75, -22.0], [43.85, -21.75], [43.75, -21.5], [43.97, -20.97]]]]}, "2010-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, -20.97], [44.32, -20.82], [44.35, -20.75], [44.25, -20.5], [44.35, -20.25], [44.25, -20.0], [44.35, -19.75], [44.25, -19.5], [44.35, -19.25], [44.25, -19.0], [44.47, -18.47], [44.82, -18.32], [44.97, -17.97], [45.5, -17.75], [46.03, -17.97], [46.18, -18.32], [46.53, -18.47], [46.75, -19.0], [46.65, -19.25], [46.75, -19.5], [46.65, -19.75], [46.75, -20.0], 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"Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.517777417118836, -2.2075162249176135, -2.17092173085984, -2.2159588496537865, -2.465944705528229]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6613643284396744, -2.586116319152154, -2.5763244456341, -3.428602491909203, -3.3323617289358936]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4294737151340964, -1.7021421748247776, -1.5351977751192725, -1.5073109905292597, -1.6883693543798917]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.53423151125165, -2.2018483320004676, -2.280851233497494, -1.9602168450531148, -2.097577112013573]}}