{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:54.955354", "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": "2012-Jul-12_to_2012-Jul-17_252.5_24.0"}, "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": 2012070000714}, "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": "July 12 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 17 2012"}, "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": "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": 103205.36613510395}, "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"]}, "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": ["Gulf of California", "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": 24.0}, "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": 252.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "252.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 252.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 256.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.0, 23.25], [-104.47, 23.03], [-104.25, 22.5], [-104.47, 21.97], [-105.0, 21.75], [-105.53, 21.97], [-105.75, 22.5], [-105.53, 23.03], [-105.0, 23.25]]]]}, "2012-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.0], [-108.03, 24.53], [-107.5, 24.75], [-106.97, 24.53], [-106.82, 24.18], [-106.5, 24.04], [-106.0, 24.25], [-105.75, 24.15], [-105.5, 24.25], [-105.0, 24.04], [-104.5, 24.25], [-103.97, 24.03], [-103.75, 23.5], [-103.85, 23.25], [-103.75, 23.0], [-103.85, 22.75], [-103.82, 22.68], [-103.47, 22.53], [-103.25, 22.0], [-103.37, 21.7], [-102.97, 21.53], [-102.75, 21.0], [-102.97, 20.47], [-103.37, 20.3], [-103.25, 20.0], [-103.47, 19.47], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-104.75, 19.35], [-105.0, 19.25], [-105.53, 19.47], [-105.75, 20.0], [-105.65, 20.25], [-105.75, 20.5], [-105.65, 20.75], [-105.75, 21.0], [-105.65, 21.25], [-105.75, 21.5], [-105.65, 21.75], [-105.75, 22.0], [-105.65, 22.25], [-105.68, 22.32], [-106.03, 22.47], [-106.18, 22.82], [-106.5, 22.96], [-107.0, 22.75], [-107.53, 22.97], [-107.68, 23.32], [-108.03, 23.47], [-108.25, 24.0]]]]}, "2012-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.0], [-108.03, 24.53], [-107.5, 24.75], [-106.97, 24.53], [-106.82, 24.18], [-106.5, 24.04], [-106.0, 24.25], [-105.75, 24.15], [-105.5, 24.25], [-105.0, 24.04], [-104.5, 24.25], [-103.97, 24.03], [-103.75, 23.5], [-103.85, 23.25], [-103.75, 23.0], [-103.85, 22.75], [-103.82, 22.68], [-103.47, 22.53], [-103.32, 22.18], [-102.97, 22.03], [-102.75, 21.5], [-102.85, 21.25], [-102.75, 21.0], [-102.85, 20.75], [-102.75, 20.5], [-102.97, 19.97], [-103.32, 19.82], [-103.47, 19.47], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-104.75, 19.35], [-105.0, 19.25], [-105.53, 19.47], [-105.75, 20.0], [-105.65, 20.25], [-105.75, 20.5], [-105.65, 20.75], [-105.68, 20.82], [-106.03, 20.97], [-106.18, 21.32], [-106.25, 21.35], [-106.5, 21.25], [-107.03, 21.47], [-107.25, 22.0], [-107.15, 22.25], [-107.25, 22.5], [-107.12, 22.8], [-107.53, 22.97], [-107.68, 23.32], [-108.03, 23.47], [-108.25, 24.0]]]]}, "2012-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.0], [-108.03, 24.53], [-107.5, 24.75], [-107.25, 24.65], [-107.0, 24.75], [-106.47, 24.53], [-106.3, 24.13], [-106.0, 24.25], [-105.75, 24.15], [-105.5, 24.25], [-105.0, 24.04], [-104.5, 24.25], [-103.97, 24.03], [-103.75, 23.5], [-103.85, 23.25], [-103.75, 23.0], [-103.85, 22.75], [-103.82, 22.68], [-103.47, 22.53], [-103.32, 22.18], [-102.97, 22.03], [-102.75, 21.5], [-102.85, 21.25], [-102.75, 21.0], [-102.85, 20.75], [-102.75, 20.5], [-102.97, 19.97], [-103.32, 19.82], [-103.47, 19.47], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-104.75, 19.35], [-105.0, 19.25], [-105.53, 19.47], [-105.75, 20.0], [-105.65, 20.25], [-105.75, 20.5], [-105.65, 20.75], [-105.68, 20.82], [-106.03, 20.97], [-106.18, 21.32], [-106.25, 21.35], [-106.5, 21.25], [-107.03, 21.47], [-107.25, 22.0], [-107.15, 22.25], [-107.18, 22.32], 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"description": "Mean t2m anomaly over entire duration", "value": -1.6208346391514923}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.679524744465198, 21.116551917409254, 21.963442871739403, 21.82153223834581, 22.149192060512235, 24.735780388453065]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.679524744465198, 16.527054522676053, 16.872676120137328, 16.43157847271192, 16.94004592880964, 19.408625618513668]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.264251885236206, -1.6046723041516722, -1.4198116365146718, -1.8062291484506403, -1.6869662448421134, -1.3942382425369242]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.264251885236206, -2.0936437424555834, 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