{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:43:52.267826", "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": "2010-Jan-14_to_2010-Jan-17_256.0_21.5"}, "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": 2010010000517}, "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": "January 14 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 17 2010"}, "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": 143224.5474076193}, "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": []}, "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": 21.5}, "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": 256.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "256.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 258.25}, "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": 24.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.0, 24.25], [-104.47, 24.03], [-104.25, 23.5], [-104.47, 22.97], [-105.0, 22.75], [-105.53, 22.97], [-105.75, 23.5], [-105.53, 24.03], [-105.0, 24.25]]]]}, "2010-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.25, 23.0], [-106.03, 23.53], [-105.68, 23.68], [-105.53, 24.03], [-105.0, 24.25], [-104.5, 24.04], [-104.0, 24.25], [-103.7, 24.12], [-103.53, 24.53], [-103.18, 24.68], [-103.03, 25.03], [-102.5, 25.25], [-102.25, 25.15], [-102.0, 25.25], [-101.47, 25.03], [-101.25, 24.5], [-101.35, 24.25], [-101.25, 24.0], [-101.35, 23.75], [-101.25, 23.5], [-101.35, 23.25], [-101.25, 23.0], [-101.35, 22.75], [-101.25, 22.5], [-101.35, 22.25], [-101.25, 22.0], [-101.35, 21.75], [-101.25, 21.5], [-101.47, 20.97], [-102.0, 20.75], [-102.25, 20.85], [-102.32, 20.82], [-102.46, 20.5], [-102.25, 20.0], [-102.47, 19.47], [-103.0, 19.25], [-103.25, 19.35], [-103.32, 19.32], [-103.47, 18.97], [-104.0, 18.75], [-104.53, 18.97], [-104.68, 19.32], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-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], [-106.25, 23.0]]]]}, "2010-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.25, 23.0], [-106.03, 23.53], [-105.68, 23.68], [-105.53, 24.03], [-105.0, 24.25], [-104.5, 24.04], [-104.0, 24.25], [-103.7, 24.12], [-103.53, 24.53], [-103.18, 24.68], [-103.03, 25.03], [-102.5, 25.25], [-102.25, 25.15], [-102.0, 25.25], [-101.47, 25.03], [-101.25, 24.5], [-101.35, 24.25], [-101.25, 24.0], [-101.35, 23.75], [-101.25, 23.5], [-101.35, 23.25], [-101.25, 23.0], [-101.35, 22.75], [-101.25, 22.5], [-101.35, 22.25], [-101.25, 22.0], [-101.35, 21.75], [-101.25, 21.5], [-101.47, 20.97], [-102.0, 20.75], [-102.25, 20.85], [-102.32, 20.82], [-102.46, 20.5], [-102.25, 20.0], [-102.47, 19.47], [-103.0, 19.25], [-103.25, 19.35], [-103.32, 19.32], [-103.47, 18.97], [-104.0, 18.75], [-104.53, 18.97], [-104.68, 19.32], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-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], [-106.25, 23.0]]]]}, "2010-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.25, 23.0], [-106.03, 23.53], [-105.68, 23.68], [-105.53, 24.03], [-105.0, 24.25], [-104.5, 24.04], [-104.0, 24.25], [-103.7, 24.12], [-103.53, 24.53], [-103.18, 24.68], [-103.03, 25.03], [-102.5, 25.25], [-102.25, 25.15], [-102.0, 25.25], [-101.47, 25.03], [-101.25, 24.5], [-101.35, 24.25], [-101.25, 24.0], [-101.35, 23.75], [-101.25, 23.5], [-101.35, 23.25], [-101.25, 23.0], [-101.35, 22.75], [-101.25, 22.5], [-101.35, 22.25], [-101.25, 22.0], [-101.35, 21.75], [-101.25, 21.5], [-101.47, 20.97], [-102.0, 20.75], [-102.25, 20.85], [-102.32, 20.82], [-102.46, 20.5], [-102.25, 20.0], [-102.47, 19.47], [-103.0, 19.25], [-103.25, 19.35], [-103.32, 19.32], [-103.47, 18.97], [-104.0, 18.75], [-104.53, 18.97], [-104.68, 19.32], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-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], [-106.25, 23.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.862432890213427}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.777981659116827}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.716440092342339, 9.193372705520858, 7.635629758785001, 10.243161131465797]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.716440092342339, 2.132276574599814, 1.5048026242373567, 4.809037135325639]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.130716410783805, -4.612853112471962, -6.156841213644822, -3.597195956200361]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.130716410783805, -6.8233708718506705, -7.862432890213427, -4.554092977320693]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5276723337944471, -2.2917999666371913, -3.0517652220433513, -1.7877821122388287]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5276723337944471, -3.0982461127384853, -4.197167117813517, -2.4833284811497456]}}