{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:36.550027", "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": "2022-Oct-01_to_2022-Oct-05_255.0_19.5"}, "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": 2022100000104}, "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 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 05 2022"}, "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": 111198.83649565304}, "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": ["Mexico"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "S.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": ["North Pacific 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": 19.5}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 252.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.03, 17.97], [-107.25, 18.5], [-107.03, 19.03], [-106.5, 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19.5], [-107.15, 19.75], [-107.25, 20.0], [-107.03, 20.53], [-106.5, 20.75], [-106.25, 20.65], [-106.0, 20.75], [-105.75, 20.65], [-105.5, 20.75], [-105.0, 20.54], [-104.68, 20.68], [-104.53, 21.03], [-104.0, 21.25], [-103.47, 21.03], [-103.32, 20.68], [-102.97, 20.53], [-102.75, 20.0], [-102.85, 19.75], [-102.82, 19.68], [-102.47, 19.53], [-102.25, 19.0], [-102.35, 18.75], [-102.25, 18.5], [-102.47, 17.97], [-103.0, 17.75], [-103.25, 17.85], [-103.32, 17.82], [-103.35, 17.75], [-103.32, 17.68], [-102.97, 17.53], [-102.75, 17.0], [-102.85, 16.75], [-102.75, 16.5], [-102.85, 16.25], [-102.75, 16.0], [-102.97, 15.47], [-103.5, 15.25], [-104.03, 15.47], [-104.18, 15.82], [-104.53, 15.97], [-104.75, 16.5], [-104.65, 16.75], [-104.75, 17.0], [-104.65, 17.25], [-104.68, 17.32], [-104.75, 17.35], [-105.0, 17.25], [-105.53, 17.47], [-105.68, 17.82], [-105.75, 17.85], [-106.0, 17.75], [-106.25, 17.85], [-106.5, 17.75], [-107.03, 17.97], [-107.25, 18.5], [-107.15, 18.75], [-107.25, 19.0], [-107.15, 19.25]]]]}, "2022-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.75, 19.0], [-107.53, 19.53], [-107.18, 19.68], [-107.15, 19.75], [-107.25, 20.0], [-107.03, 20.53], [-106.5, 20.75], [-106.25, 20.65], [-106.0, 20.75], [-105.75, 20.65], [-105.5, 20.75], [-105.0, 20.54], [-104.68, 20.68], [-104.53, 21.03], [-104.0, 21.25], [-103.47, 21.03], [-103.32, 20.68], [-102.97, 20.53], [-102.75, 20.0], [-102.85, 19.75], [-102.82, 19.68], [-102.47, 19.53], [-102.25, 19.0], [-102.35, 18.75], [-102.25, 18.5], [-102.47, 17.97], [-103.0, 17.75], [-103.25, 17.85], [-103.32, 17.82], [-103.35, 17.75], [-103.32, 17.68], [-102.97, 17.53], [-102.75, 17.0], [-102.85, 16.75], [-102.75, 16.5], [-102.85, 16.25], [-102.75, 16.0], [-102.97, 15.47], [-103.5, 15.25], [-104.03, 15.47], [-104.18, 15.82], [-104.53, 15.97], [-104.75, 16.5], [-104.65, 16.75], [-104.75, 17.0], [-104.65, 17.25], [-104.68, 17.32], [-104.75, 17.35], [-105.0, 17.25], [-105.53, 17.47], [-105.68, 17.82], 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20.03], [-105.75, 19.5], [-105.85, 19.25], [-105.75, 19.0], [-105.97, 18.47], [-106.5, 18.25], [-106.75, 18.35], [-107.0, 18.25], [-107.53, 18.47], [-107.75, 19.0], [-107.53, 19.53], [-107.18, 19.68], [-107.03, 20.03], [-106.5, 20.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3279559954405613}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3758966602169134}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.772402810553388, 24.46058752416127, 24.440229614688064, 24.011685908498123, 26.550804720356723]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.035940417431675, 17.94538160911469, 17.326836453770795, 17.687698749505387, 26.355150999315754]}, "anom_evo_areamean": {"name": "Evolution of mean 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