{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:27.621272", "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": "2022-Oct-01_to_2022-Oct-05_255.5_19.5"}, "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": 2022100000112}, "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": "October 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 05 2022"}, "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": 122915.7659518006}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["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": 19.5}, "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": 255.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-107.75, 19.5], [-107.65, 19.75], [-107.75, 20.0], [-107.53, 20.53], [-107.0, 20.75], [-106.75, 20.65], [-106.5, 20.75], [-106.25, 20.65], [-106.0, 20.75], [-105.75, 20.65], [-105.5, 20.75], [-105.25, 20.65], [-105.0, 20.75], [-104.75, 20.65], [-104.5, 20.75], [-104.25, 20.65], [-104.0, 20.75], [-103.75, 20.65], [-103.5, 20.75], [-102.97, 20.53], [-102.75, 20.0], [-102.85, 19.75], [-102.82, 19.68], [-102.47, 19.53], [-102.25, 19.0], [-102.47, 18.47], [-102.82, 18.32], [-102.85, 18.25], [-102.75, 18.0], [-102.85, 17.75], [-102.75, 17.5], [-102.85, 17.25], [-102.75, 17.0], [-102.85, 16.75], [-102.75, 16.5], [-102.97, 15.97], [-103.5, 15.75], [-103.75, 15.85], [-104.0, 15.75], [-104.53, 15.97], [-104.68, 16.32], [-105.03, 16.47], [-105.25, 17.0], [-105.15, 17.25], [-105.18, 17.32], [-105.53, 17.47], [-105.68, 17.82], [-105.75, 17.85], [-106.0, 17.75], [-106.25, 17.85], [-106.5, 17.75], [-107.03, 17.97], [-107.18, 18.32], [-107.53, 18.47], [-107.75, 19.0], [-107.65, 19.25], [-107.75, 19.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "S.Central-America", "N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.5, 17.75], [-107.03, 17.97], [-107.25, 18.5], [-107.03, 19.03], [-106.5, 19.25], [-106.25, 19.15], [-106.0, 19.25], [-105.75, 19.15], [-105.62, 19.2], [-105.75, 19.5], [-105.65, 19.75], [-105.75, 20.0], [-105.53, 20.53], [-105.0, 20.75], [-104.47, 20.53], [-104.32, 20.18], [-104.25, 20.15], [-104.0, 20.25], [-103.75, 20.15], [-103.5, 20.25], [-102.97000000000003, 20.03], [-102.82, 19.68], [-102.47000000000003, 19.53], [-102.25, 19.0], [-102.47000000000003, 18.47], [-102.82, 18.32], [-102.85000000000002, 18.25], [-102.75, 18.0], [-102.85000000000002, 17.75], [-102.75, 17.5], [-102.85000000000002, 17.25], [-102.75, 17.0], [-102.85000000000002, 16.75], [-102.75, 16.5], [-102.97000000000003, 15.97], [-103.5, 15.75], [-103.75, 15.85], [-104.0, 15.75], [-104.53, 15.97], [-104.68, 16.32], [-105.03, 16.47], [-105.25, 17.0], [-105.15, 17.25], [-105.18, 17.32], [-105.53, 17.47], [-105.68, 17.82], [-105.75, 17.85], [-106.0, 17.75], [-106.25, 17.85], [-106.5, 17.75]]]]}, "2022-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.53, 18.47], [-107.75, 19.0], [-107.53, 19.53], [-107.18, 19.68], [-107.15, 19.75], [-107.25, 20.0], [-107.03, 20.53], [-106.5, 20.75], [-106.25, 20.65], [-106.0, 20.75], [-105.75, 20.65], [-105.5, 20.75], [-105.25, 20.65], [-105.0, 20.75], [-104.75, 20.65], [-104.5, 20.75], [-104.25, 20.65], [-104.0, 20.75], [-103.75, 20.65], [-103.5, 20.75], [-102.97000000000003, 20.53], [-102.75, 20.0], [-102.85000000000002, 19.75], [-102.82, 19.68], [-102.47000000000003, 19.53], [-102.25, 19.0], [-102.47000000000003, 18.47], [-102.82, 18.32], [-102.85000000000002, 18.25], [-102.75, 18.0], [-102.85000000000002, 17.75], [-102.75, 17.5], [-102.85000000000002, 17.25], [-102.75, 17.0], [-102.85000000000002, 16.75], [-102.75, 16.5], [-102.97000000000003, 15.97], [-103.5, 15.75], [-103.75, 15.85], [-104.0, 15.75], [-104.53, 15.97], [-104.68, 16.32], [-105.03, 16.47], [-105.25, 17.0], [-105.15, 17.25], [-105.18, 17.32], [-105.53, 17.47], [-105.68, 17.82], [-105.75, 17.85], [-106.0, 17.75], [-106.25, 17.85], [-106.5, 17.75], [-107.03, 17.97], [-107.18, 18.32], [-107.53, 18.47]]]]}, "2022-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.75, 19.5], [-107.65, 19.75], [-107.75, 20.0], [-107.53, 20.53], [-107.0, 20.75], [-106.75, 20.65], [-106.5, 20.75], [-106.25, 20.65], [-106.0, 20.75], [-105.75, 20.65], [-105.5, 20.75], [-105.25, 20.65], [-105.0, 20.75], [-104.75, 20.65], [-104.5, 20.75], [-104.25, 20.65], [-104.0, 20.75], [-103.75, 20.65], [-103.5, 20.75], [-102.97000000000003, 20.53], [-102.75, 20.0], [-102.85000000000002, 19.75], [-102.82, 19.68], [-102.47000000000003, 19.53], [-102.25, 19.0], [-102.47000000000003, 18.47], [-102.82, 18.32], [-102.85000000000002, 18.25], [-102.75, 18.0], [-102.85000000000002, 17.75], [-102.75, 17.5], [-102.85000000000002, 17.25], [-102.75, 17.0], [-102.85000000000002, 16.75], [-102.75, 16.5], [-102.97000000000003, 15.97], [-103.5, 15.75], [-103.75, 15.85], [-104.0, 15.75], [-104.53, 15.97], [-104.68, 16.32], [-105.03, 16.47], [-105.25, 17.0], [-105.15, 17.25], [-105.18, 17.32], [-105.53, 17.47], [-105.68, 17.82], [-105.75, 17.85], [-106.0, 17.75], [-106.25, 17.85], [-106.5, 17.75], [-107.03, 17.97], [-107.18, 18.32], [-107.53, 18.47], [-107.75, 19.0], [-107.65, 19.25], [-107.75, 19.5]]]]}, "2022-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.75, 19.5], [-107.65, 19.75], [-107.75, 20.0], [-107.53, 20.53], [-107.0, 20.75], [-106.75, 20.65], [-106.5, 20.75], [-106.25, 20.65], [-106.0, 20.75], [-105.75, 20.65], [-105.5, 20.75], [-105.0, 20.54], [-104.5, 20.75], [-104.25, 20.65], [-104.0, 20.75], [-103.75, 20.65], [-103.5, 20.75], [-102.97000000000003, 20.53], [-102.75, 20.0], [-102.85000000000002, 19.75], [-102.75, 19.5], [-102.97000000000003, 18.97], [-103.5, 18.75], [-103.75, 18.85], [-104.0, 18.75], [-104.25, 18.85], [-104.32, 18.82], [-104.47, 18.47], [-105.0, 18.25], [-105.25, 18.35], [-105.5, 18.25], [-105.75, 18.35], [-105.82, 18.32], [-105.97, 17.97], [-106.5, 17.75], [-107.03, 17.97], [-107.18, 18.32], [-107.53, 18.47], [-107.75, 19.0], [-107.65, 19.25], [-107.75, 19.5]]]]}, "2022-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.75, 19.5], [-107.65, 19.75], [-107.75, 20.0], [-107.53, 20.53], [-107.0, 20.75], [-106.47, 20.53], [-106.32, 20.18], [-105.97, 20.03], [-105.75, 19.5], [-105.85, 19.25], [-105.75, 19.0], [-105.97, 18.47], [-106.5, 18.25], [-106.75, 18.35], [-107.0, 18.25], [-107.53, 18.47], [-107.75, 19.0], [-107.65, 19.25], [-107.75, 19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.422189772323236}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.403965436203996}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.158851811717284, 24.89591361642016, 24.92894358136175, 24.43528462602751, 26.5747812221436]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.035940417431675, 17.94538160911469, 17.326836453770795, 17.687698749505387, 26.355150999315754]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2295924914857783, -1.4410594695853405, -1.5061325089996869, -1.385428830241148, -1.2336028152481275]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8369412087565706, -2.146253084196701, -2.422189772323236, -1.7162912954322564, -1.3644216487273297]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6365368583387747, -1.79116061257406, -1.764507843523696, -1.578565550337047, -1.481687105496613]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.519990287307792, -2.4471320784709216, -2.650361601927117, -1.845361055547964, -1.6429728608202228]}}