{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:26.926499", "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-Sep-26_to_2012-Sep-29_253.5_23.5"}, "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": 2012090000969}, "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": "September 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 143170.18515484082}, "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": 23.5}, "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": 253.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 248.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 255.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.12, 24.3], [-107.53, 24.47], [-107.75, 25.0], [-107.53, 25.53], [-107.0, 25.75], [-106.47, 25.53], [-106.25, 25.0], [-106.37, 24.7], [-106.25, 24.65], [-106.0, 24.75], [-105.47, 24.53], [-105.25, 24.0], [-105.35, 23.75], [-105.25, 23.5], [-105.35, 23.25], [-105.25, 23.0], [-105.47, 22.47], [-106.0, 22.25], [-106.53, 22.47], [-106.68, 22.82], [-107.03, 22.97], [-107.25, 23.5], [-107.15, 23.75], [-107.25, 24.0], [-107.12, 24.3]]]]}, "2012-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.53, 25.47], [-111.75, 26.0], [-111.53, 26.53], [-111.0, 26.75], [-110.75, 26.65], [-110.5, 26.75], [-110.25, 26.65], [-110.0, 26.75], [-109.75, 26.65], [-109.68, 26.68], [-109.53, 27.03], [-109.0, 27.25], [-108.75, 27.15], [-108.68, 27.18], [-108.53, 27.53], [-108.0, 27.75], [-107.75, 27.65], [-107.5, 27.75], [-106.97, 27.53], [-106.82, 27.18], [-106.47, 27.03], [-106.25, 26.5], [-106.35, 26.25], [-106.32, 26.18], [-105.97, 26.03], [-105.75, 25.5], [-105.85, 25.25], [-105.82, 25.18], [-105.47, 25.03], [-105.25, 24.5], [-105.35, 24.25], [-105.32, 24.18], [-104.97, 24.03], [-104.82, 23.68], [-104.75, 23.65], [-104.5, 23.75], [-103.97, 23.53], [-103.75, 23.0], [-103.85, 22.75], [-103.75, 22.5], [-103.85, 22.25], [-103.75, 22.0], [-103.97, 21.47], [-104.5, 21.25], [-104.75, 21.35], [-105.0, 21.25], [-105.25, 21.35], [-105.5, 21.25], [-106.03, 21.47], [-106.18, 21.82], [-106.53, 21.97], [-106.75, 22.5], [-106.65, 22.75], [-106.68, 22.82], [-106.75, 22.85], [-107.0, 22.75], [-107.53, 22.97], [-107.75, 23.5], [-107.65, 23.75], [-107.68, 23.82], [-108.03, 23.97], [-108.18, 24.32], [-108.25, 24.35], [-108.5, 24.25], [-108.75, 24.35], [-109.0, 24.25], [-109.53, 24.47], [-109.68, 24.82], [-109.75, 24.85], [-110.0, 24.75], [-110.53, 24.97], [-110.68, 25.32], [-110.75, 25.35], [-111.0, 25.25], [-111.53, 25.47]]]]}, "2012-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.53, 25.47], [-111.75, 26.0], [-111.53, 26.53], [-111.0, 26.75], [-110.75, 26.65], [-110.5, 26.75], [-110.25, 26.65], [-110.0, 26.75], [-109.75, 26.65], [-109.68, 26.68], [-109.53, 27.03], [-109.0, 27.25], [-108.75, 27.15], [-108.68, 27.18], [-108.53, 27.53], [-108.0, 27.75], [-107.75, 27.65], [-107.5, 27.75], [-106.97, 27.53], [-106.82, 27.18], [-106.47, 27.03], [-106.25, 26.5], [-106.35, 26.25], [-106.32, 26.18], [-105.97, 26.03], [-105.75, 25.5], [-105.85, 25.25], [-105.82, 25.18], [-105.47, 25.03], [-105.25, 24.5], [-105.35, 24.25], [-105.32, 24.18], [-104.97, 24.03], [-104.82, 23.68], [-104.75, 23.65], [-104.5, 23.75], [-103.97, 23.53], [-103.75, 23.0], [-103.85, 22.75], [-103.75, 22.5], [-103.85, 22.25], [-103.75, 22.0], [-103.97, 21.47], [-104.5, 21.25], [-104.75, 21.35], [-105.0, 21.25], [-105.25, 21.35], [-105.5, 21.25], [-106.03, 21.47], [-106.18, 21.82], [-106.53, 21.97], [-106.75, 22.5], [-106.65, 22.75], [-106.68, 22.82], [-106.75, 22.85], [-107.0, 22.75], [-107.53, 22.97], [-107.75, 23.5], [-107.65, 23.75], [-107.68, 23.82], [-108.03, 23.97], [-108.18, 24.32], [-108.25, 24.35], [-108.5, 24.25], 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[23.748616848050517, 23.303840017556126, 22.987353662847852, 22.89388889642214]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.767255804601405, 14.431503058470184, 14.202764231681329, 14.920360338409807]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6082010098666046, -1.965244955116942, -2.251849102014738, -2.3194343038147913]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8608507471079747, -3.089881661568313, -3.403979076143685, -3.9751717332586622]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7061423272670775, -1.8419349467600552, -2.0999819335446728, -2.1864570610956675]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.086047542814175, -2.756181874142946, -2.8416014908910516, -2.9545541777121644]}}