{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:44.667075", "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": "2011-Jun-30_to_2011-Jul-04_259.5_18.0"}, "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": 2011060001599}, "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": "June 30 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 04 2011"}, "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": 73828.57315885242}, "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": 18.0}, "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": 259.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.25, 17.5], [-102.03, 18.03], [-101.5, 18.25], [-100.97, 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[-99.47, 17.53], [-99.32, 17.18], [-99.25, 17.15], [-99.0, 17.25], [-98.47, 17.03], [-98.32, 16.68], [-98.25, 16.65], [-98.0, 16.75], [-97.47, 16.53], [-97.25, 16.0], [-97.47, 15.47], [-98.0, 15.25], [-98.25, 15.35], [-98.5, 15.25], [-98.75, 15.35], [-98.82, 15.32], [-98.97, 14.97], [-99.32, 14.82], [-99.47, 14.47], [-100.0, 14.25], [-100.53, 14.47], [-100.75, 15.0], [-100.65, 15.25], [-100.75, 15.5], [-100.65, 15.75], [-100.75, 16.0], [-100.65, 16.25], [-100.68, 16.32], [-100.75, 16.35], [-101.0, 16.25], [-101.53, 16.47], [-101.68, 16.82], [-102.03, 16.97], [-102.18, 17.32], [-102.53, 17.47], [-102.68, 17.82], [-103.03, 17.97], [-103.25, 18.5], [-103.15, 18.75], [-103.25, 19.0], [-103.03, 19.53]]]]}, "2011-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 19.53], [-102.5, 19.75], [-101.97, 19.53], [-101.82, 19.18], [-101.75, 19.15], [-101.68, 19.18], [-101.53, 19.53], [-101.0, 19.75], [-100.47, 19.53], [-100.32, 19.18], [-99.97, 19.03], [-99.75, 18.5], [-99.85, 18.25], [-99.75, 18.0], [-99.97, 17.47], [-100.5, 17.25], [-100.75, 17.35], [-101.0, 17.25], [-101.5, 17.46], [-102.0, 17.25], [-102.53, 17.47], [-102.68, 17.82], [-103.03, 17.97], [-103.25, 18.5], [-103.15, 18.75], [-103.25, 19.0], [-103.03, 19.53]]]]}, "2011-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 18.0], [-101.53, 18.53], [-101.0, 18.75], [-100.75, 18.65], [-100.5, 18.75], [-99.97, 18.53], [-99.75, 18.0], [-99.97, 17.47], [-100.5, 17.25], [-100.75, 17.35], [-101.0, 17.25], [-101.53, 17.47], [-101.75, 18.0]]], [[[-102.5, 19.75], [-101.97, 19.53], [-101.75, 19.0], [-101.85, 18.75], [-101.75, 18.5], [-101.97, 17.97], [-102.5, 17.75], [-103.03, 17.97], [-103.25, 18.5], [-103.15, 18.75], [-103.25, 19.0], [-103.03, 19.53], [-102.5, 19.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.288611968328439}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.014965214405181}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.207610851395316, 25.187066798182457, 25.09467299239884, 23.43142555039327, 22.264839449591875]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.893401076788052, 19.683867554288724, 20.03724996266908, 19.714893571472544, 19.986351585111663]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5575381927718506, -2.091274597757238, -2.0046798769896985, -2.584668288893977, -1.9315632638806193]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.071861010793782, -4.288611968328439, -3.599102810083764, -3.6046375972721876, -2.707645499822604]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5370510904159687, -1.7148208383759225, -1.6711537475234366, -1.7130606192571505, -1.4528683485724616]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.916984248426848, -2.447077897725825, -2.2621783592384483, -1.9017539095690132, -1.5503596937896924]}}