{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:25:56.994692", "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": "2021-Jun-01_to_2021-Jun-05_259.0_25.0"}, "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": 2021060000093}, "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 01 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 05 2021"}, "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": 414826.6310970023}, "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", "United States"]}, "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": []}, "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": 25.0}, "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": 259.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.75}, "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": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.5, 26.75], [-101.25, 26.65], [-101.0, 26.75], [-100.75, 26.65], [-100.5, 26.75], [-99.97, 26.53], [-99.75, 26.0], [-99.85, 25.75], [-99.82, 25.68], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.25, 24.5], [-99.47, 23.97], [-100.0, 23.75], [-100.25, 23.85], [-100.5, 23.75], [-100.75, 23.85], [-101.0, 23.75], [-101.53, 23.97], [-101.68, 24.32], [-102.03, 24.47], [-102.25, 25.0], [-102.04, 25.5], [-102.25, 26.0], [-102.03, 26.53], [-101.5, 26.75]]], [[[-103.25, 28.0], [-103.03, 28.53], [-102.5, 28.75], [-101.97, 28.53], [-101.75, 28.0], [-101.97, 27.47], [-102.5, 27.25], [-103.03, 27.47], [-103.25, 28.0]]], [[[-106.25, 31.0], [-106.03, 31.53], [-105.5, 31.75], [-104.97, 31.53], [-104.75, 31.0], [-104.97, 30.47], [-105.5, 30.25], [-106.03, 30.47], [-106.25, 31.0]]]]}, "2021-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 31.0], [-106.53, 31.53], [-106.0, 31.75], [-105.75, 31.65], [-105.5, 31.75], [-104.97, 31.53], [-104.82, 31.18], [-104.75, 31.15], [-104.5, 31.25], [-103.97, 31.03], [-103.75, 30.5], [-103.87, 30.2], [-103.47, 30.03], [-103.32, 29.68], [-102.97, 29.53], [-102.82, 29.18], [-102.47, 29.03], [-102.32, 28.68], [-101.97, 28.53], [-101.75, 28.0], [-101.85, 27.75], [-101.75, 27.5], [-101.85, 27.25], [-101.82, 27.18], [-101.75, 27.15], [-101.5, 27.25], [-101.25, 27.15], [-101.0, 27.25], [-100.75, 27.15], [-100.5, 27.25], [-99.97, 27.03], [-99.75, 26.5], [-99.85, 26.25], [-99.75, 26.0], [-99.85, 25.75], [-99.82, 25.68], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.32, 24.68], [-98.97, 24.53], [-98.8, 24.12], [-98.5, 24.25], [-98.25, 24.15], [-98.0, 24.25], [-97.47, 24.03], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.47, 22.47], [-97.82, 22.32], [-97.97, 21.97], [-98.5, 21.75], [-98.75, 21.85], [-98.82, 21.82], [-98.97, 21.47], [-99.32, 21.32], [-99.47, 20.97], [-100.0, 20.75], [-100.5, 20.96], [-100.82, 20.82], [-100.85, 20.75], [-100.75, 20.5], [-100.85, 20.25], [-100.82, 20.18], [-100.47, 20.03], [-100.25, 19.5], [-100.47, 18.97], [-101.0, 18.75], [-101.25, 18.85], [-101.5, 18.75], [-101.75, 18.85], [-102.0, 18.75], [-102.53, 18.97], [-102.68, 19.32], [-102.75, 19.35], [-103.0, 19.25], [-103.53, 19.47], [-103.75, 20.0], [-103.65, 20.25], [-103.75, 20.5], [-103.54, 21.0], [-103.75, 21.5], [-103.65, 21.75], [-103.75, 22.0], [-103.65, 22.25], [-103.68, 22.32], [-104.03, 22.47], [-104.25, 23.0], [-104.15, 23.25], [-104.18, 23.32], [-104.53, 23.47], [-104.75, 24.0], [-104.65, 24.25], [-104.68, 24.32], [-105.03, 24.47], [-105.25, 25.0], [-105.15, 25.25], [-105.25, 25.5], [-105.03, 26.03], [-104.62, 26.2], [-104.75, 26.5], [-104.62, 26.8], [-105.03, 26.97], [-105.25, 27.5], [-105.15, 27.75], [-105.25, 28.0], [-105.12, 28.3], [-105.25, 28.35], [-105.5, 28.25], [-106.03, 28.47], [-106.25, 29.0], [-106.15, 29.25], [-106.25, 29.5], [-106.04, 30.0], [-106.18, 30.32], [-106.53, 30.47], [-106.75, 31.0]]]]}, "2021-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 31.0], [-106.53, 31.53], [-106.0, 31.75], [-105.75, 31.65], [-105.5, 31.75], [-104.97, 31.53], [-104.82, 31.18], [-104.75, 31.15], [-104.5, 31.25], [-103.97, 31.03], [-103.75, 30.5], [-103.87, 30.2], [-103.7, 30.12], [-103.53, 30.53], [-103.18, 30.68], [-103.03, 31.03], [-102.5, 31.25], [-101.97, 31.03], [-101.75, 30.5], [-101.85, 30.25], [-101.75, 30.0], [-101.87, 29.7], [-101.47, 29.53], [-101.25, 29.0], [-101.35, 28.75], [-101.25, 28.5], [-101.35, 28.25], [-101.25, 28.0], [-101.47, 27.47], [-101.82, 27.32], [-101.85, 27.25], [-101.82, 27.18], [-101.75, 27.15], [-101.5, 27.25], [-101.25, 27.15], [-101.0, 27.25], [-100.75, 27.15], [-100.5, 27.25], [-99.97, 27.03], [-99.75, 26.5], [-99.85, 26.25], [-99.75, 26.0], [-99.85, 25.75], [-99.82, 25.68], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.32, 24.68], [-98.97, 24.53], [-98.8, 24.12], [-98.5, 24.25], [-98.25, 24.15], [-98.0, 24.25], [-97.47, 24.03], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.47, 22.47], [-97.82, 22.32], [-97.97, 21.97], [-98.5, 21.75], [-98.75, 21.85], [-98.82, 21.82], [-98.97, 21.47], [-99.32, 21.32], [-99.47, 20.97], [-100.0, 20.75], [-100.5, 20.96], [-100.82, 20.82], [-100.85, 20.75], [-100.75, 20.5], [-100.85, 20.25], [-100.82, 20.18], [-100.47, 20.03], [-100.25, 19.5], [-100.47, 18.97], [-101.0, 18.75], [-101.25, 18.85], [-101.5, 18.75], [-101.75, 18.85], [-102.0, 18.75], [-102.5, 18.96], [-103.0, 18.75], [-103.53, 18.97], [-103.75, 19.5], [-103.65, 19.75], [-103.75, 20.0], [-103.65, 20.25], [-103.75, 20.5], [-103.54, 21.0], [-103.75, 21.5], [-103.65, 21.75], [-103.75, 22.0], [-103.65, 22.25], [-103.68, 22.32], [-104.03, 22.47], [-104.25, 23.0], [-104.15, 23.25], [-104.18, 23.32], [-104.53, 23.47], [-104.75, 24.0], [-104.65, 24.25], [-104.68, 24.32], [-105.03, 24.47], [-105.25, 25.0], [-105.15, 25.25], [-105.25, 25.5], [-105.03, 26.03], [-104.62, 26.2], [-104.75, 26.5], [-104.62, 26.8], [-105.03, 26.97], [-105.25, 27.5], [-105.15, 27.75], [-105.25, 28.0], [-105.12, 28.3], [-105.25, 28.35], [-105.5, 28.25], [-106.03, 28.47], [-106.25, 29.0], [-106.15, 29.25], [-106.25, 29.5], [-106.04, 30.0], [-106.18, 30.32], [-106.53, 30.47], [-106.75, 31.0]]]]}, "2021-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 31.0], [-106.53, 31.53], [-106.0, 31.75], [-105.75, 31.65], [-105.5, 31.75], [-104.97, 31.53], [-104.82, 31.18], [-104.75, 31.15], [-104.5, 31.25], [-103.97, 31.03], [-103.75, 30.5], [-103.87, 30.2], [-103.7, 30.12], [-103.53, 30.53], [-103.18, 30.68], [-103.03, 31.03], [-102.5, 31.25], [-101.97, 31.03], [-101.75, 30.5], [-101.85, 30.25], [-101.75, 30.0], [-101.87, 29.7], [-101.47, 29.53], [-101.25, 29.0], [-101.35, 28.75], [-101.25, 28.5], [-101.35, 28.25], [-101.25, 28.0], [-101.47, 27.47], [-101.82, 27.32], [-101.85, 27.25], [-101.82, 27.18], [-101.75, 27.15], [-101.5, 27.25], [-101.25, 27.15], [-101.0, 27.25], [-100.75, 27.15], [-100.5, 27.25], [-99.97, 27.03], [-99.75, 26.5], [-99.85, 26.25], [-99.75, 26.0], [-99.85, 25.75], [-99.82, 25.68], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.32, 24.68], [-98.97, 24.53], [-98.8, 24.12], [-98.5, 24.25], [-98.25, 24.15], [-98.0, 24.25], [-97.47, 24.03], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.47, 22.47], [-97.82, 22.32], [-97.97, 21.97], [-98.5, 21.75], [-98.75, 21.85], [-98.82, 21.82], [-98.97, 21.47], [-99.32, 21.32], [-99.47, 20.97], [-100.0, 20.75], [-100.5, 20.96], [-100.82, 20.82], [-100.85, 20.75], [-100.75, 20.5], [-100.85, 20.25], [-100.82, 20.18], [-100.47, 20.03], [-100.25, 19.5], [-100.47, 18.97], [-101.0, 18.75], [-101.25, 18.85], [-101.5, 18.75], [-101.75, 18.85], [-102.0, 18.75], [-102.5, 18.96], [-103.0, 18.75], [-103.53, 18.97], [-103.75, 19.5], [-103.65, 19.75], [-103.75, 20.0], [-103.65, 20.25], [-103.75, 20.5], [-103.54, 21.0], [-103.75, 21.5], [-103.65, 21.75], [-103.75, 22.0], [-103.65, 22.25], [-103.68, 22.32], [-104.03, 22.47], [-104.25, 23.0], [-104.15, 23.25], [-104.18, 23.32], [-104.53, 23.47], [-104.75, 24.0], [-104.65, 24.25], [-104.68, 24.32], [-105.03, 24.47], [-105.25, 25.0], [-105.15, 25.25], [-105.25, 25.5], [-105.03, 26.03], [-104.62, 26.2], [-104.75, 26.5], [-104.62, 26.8], [-105.03, 26.97], [-105.25, 27.5], [-105.15, 27.75], [-105.25, 28.0], [-105.12, 28.3], [-105.25, 28.35], [-105.5, 28.25], [-106.03, 28.47], [-106.25, 29.0], [-106.15, 29.25], [-106.25, 29.5], [-106.04, 30.0], [-106.18, 30.32], [-106.53, 30.47], [-106.75, 31.0]]]]}, "2021-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.75, 19.5], [-103.53, 20.03], [-103.0, 20.25], [-102.47, 20.03], [-102.25, 19.5], [-102.47, 18.97], [-103.0, 18.75], [-103.53, 18.97], [-103.75, 19.5]]], [[[-97.47, 24.03], [-97.25, 23.5], [-97.35, 23.25], [-97.25, 23.0], [-97.47, 22.47], [-98.0, 22.25], [-98.53, 22.47], [-98.75, 23.0], [-98.65, 23.25], [-98.75, 23.5], [-98.53, 24.03], [-98.0, 24.25], [-97.47, 24.03]]], [[[-103.18, 30.68], [-103.03, 31.03], [-102.5, 31.25], [-101.97, 31.03], [-101.75, 30.5], [-101.85, 30.25], [-101.75, 30.0], [-101.87, 29.7], [-101.47, 29.53], [-101.25, 29.0], [-101.35, 28.75], [-101.25, 28.5], [-101.35, 28.25], [-101.25, 28.0], [-101.47, 27.47], [-101.87, 27.3], [-101.8, 27.12], [-101.5, 27.25], [-101.25, 27.15], [-101.0, 27.25], [-100.75, 27.15], [-100.5, 27.25], [-99.97, 27.03], [-99.75, 26.5], [-99.85, 26.25], [-99.75, 26.0], [-99.85, 25.75], [-99.82, 25.68], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.32, 24.68], [-98.97, 24.53], [-98.75, 24.0], [-98.97, 23.47], [-99.5, 23.25], [-99.75, 23.35], [-100.0, 23.25], [-100.25, 23.35], [-100.32, 23.32], [-100.47, 22.97], [-100.82, 22.82], [-100.97, 22.47], [-101.32, 22.32], [-101.47, 21.97], [-102.0, 21.75], [-102.53, 21.97], [-102.68, 22.32], [-103.03, 22.47], [-103.18, 22.82], [-103.53, 22.97], [-103.75, 23.5], [-103.65, 23.75], [-103.68, 23.82], [-104.03, 23.97], [-104.25, 24.5], [-104.03, 25.03], [-103.5, 25.25], [-103.25, 25.15], [-103.18, 25.18], [-103.04, 25.5], [-103.25, 26.0], [-103.04, 26.5], [-103.25, 27.0], [-103.04, 27.5], [-103.25, 28.0], [-103.03, 28.53], [-102.68, 28.68], [-102.65, 28.75], [-102.7, 28.88], [-103.0, 28.75], [-103.53, 28.97], [-103.75, 29.5], [-103.65, 29.75], [-103.75, 30.0], [-103.53, 30.53], [-103.18, 30.68]]], [[[-105.53, 30.03], [-105.0, 30.25], [-104.75, 30.15], [-104.5, 30.25], [-103.97, 30.03], [-103.75, 29.5], [-103.97, 28.97], [-104.5, 28.75], [-104.75, 28.85], [-105.0, 28.75], [-105.53, 28.97], [-105.75, 29.5], [-105.53, 30.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.671031336974295}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.0517765698155}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.02579844066048, 20.642452657128615, 20.281912233456183, 19.882505513222725, 20.853333644756844]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.93620627034511, 15.81757020942024, 14.513289944744486, 14.08148721834624, 15.939603234248466]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8704147196807384, -3.774554807223457, -4.177835679257758, -4.583196217138573, -3.2504567383521157]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.318576880860803, -5.788415208376648, -6.613527813680207, -6.671031336974295, -4.721282681176376]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.388077766266707, -1.793360103705106, -1.988394277407964, -2.2042467595056467, -1.5766828013120786]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8798584007688477, -2.592239386412984, -2.6990476016300993, -2.9458119030952106, -2.060503553355182]}}