{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:21.355720", "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": "2025-Jul-13_to_2025-Jul-21_258.0_24.0"}, "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": 2025070000586}, "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": "July 13 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 21 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 102755.80829775773}, "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": []}, "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": 24.0}, "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": 258.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 24.03], [-102.68, 24.18], [-102.53, 24.53], [-102.18, 24.68], [-102.15, 24.75], [-102.25, 25.0], [-102.03, 25.53], [-101.5, 25.75], [-101.25, 25.65], [-101.0, 25.75], [-100.47, 25.53], [-100.25, 25.0], [-100.35, 24.75], [-100.32, 24.68], [-99.97, 24.53], [-99.75, 24.0], [-99.85, 23.75], [-99.75, 23.5], [-99.97, 22.97], [-100.32, 22.82], [-100.47, 22.47], [-100.82, 22.32], [-100.85, 22.25], [-100.82, 22.18], [-100.47, 22.03], [-100.32, 21.68], [-99.97, 21.53], [-99.75, 21.0], [-99.97, 20.47], [-100.32, 20.32], [-100.47, 19.97], [-100.82, 19.82], [-100.97, 19.47], [-101.5, 19.25], [-101.75, 19.35], [-102.0, 19.25], [-102.53, 19.47], [-102.75, 20.0], [-102.65, 20.25], [-102.75, 20.5], [-102.65, 20.75], [-102.68, 20.82], [-103.03, 20.97], [-103.25, 21.5], [-103.15, 21.75], [-103.25, 22.0], [-103.15, 22.25], [-103.18, 22.32], [-103.53, 22.47], [-103.75, 23.0], [-103.53, 23.53], [-103.18, 23.68], [-103.03, 24.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.52999999999997, 24.53], [-102.0, 24.75], [-101.47000000000003, 24.53], [-101.25, 24.0], [-101.47000000000003, 23.47], [-102.0, 23.25], [-102.52999999999997, 23.47], [-102.75, 24.0], [-102.52999999999997, 24.53]]]]}, "2025-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.52999999999997, 24.53], [-102.0, 24.75], [-101.47000000000003, 24.53], [-101.25, 24.0], [-101.47000000000003, 23.47], [-102.0, 23.25], [-102.52999999999997, 23.47], [-102.75, 24.0], [-102.52999999999997, 24.53]]]]}, "2025-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 22.0], [-102.52999999999997, 22.53], [-102.0, 22.75], [-101.75, 22.65], [-101.5, 22.75], [-100.97000000000003, 22.53], [-100.75, 22.0], [-100.85000000000002, 21.75], [-100.75, 21.5], [-100.97000000000003, 20.97], [-101.5, 20.75], [-102.02999999999997, 20.97], [-102.18, 21.32], [-102.52999999999997, 21.47], [-102.75, 22.0]]], [[[-101.5, 25.25], [-100.97000000000003, 25.03], [-100.75, 24.5], [-100.85000000000002, 24.25], [-100.75, 24.0], [-100.97000000000003, 23.47], [-101.5, 23.25], [-101.75, 23.35], [-102.0, 23.25], [-102.52999999999997, 23.47], [-102.75, 24.0], [-102.52999999999997, 24.53], [-102.18, 24.68], [-102.02999999999997, 25.03], [-101.5, 25.25]]]]}, "2025-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.02999999999997, 22.97], [-103.25, 23.5], [-103.02999999999997, 24.03], [-102.68, 24.18], [-102.52999999999997, 24.53], [-102.18, 24.68], [-102.14999999999998, 24.75], [-102.25, 25.0], [-102.02999999999997, 25.53], [-101.5, 25.75], [-101.25, 25.65], [-101.0, 25.75], [-100.47000000000003, 25.53], [-100.25, 25.0], [-100.35000000000002, 24.75], [-100.32, 24.68], [-99.97000000000003, 24.53], [-99.75, 24.0], [-99.85000000000002, 23.75], [-99.75, 23.5], [-99.97000000000003, 22.97], [-100.32, 22.82], [-100.47000000000003, 22.47], [-100.82, 22.32], [-100.85000000000002, 22.25], [-100.82, 22.18], [-100.47000000000003, 22.03], [-100.32, 21.68], [-99.97000000000003, 21.53], [-99.75, 21.0], [-99.97000000000003, 20.47], [-100.5, 20.25], [-100.75, 20.35], [-101.0, 20.25], [-101.52999999999997, 20.47], [-101.68, 20.82], [-102.02999999999997, 20.97], [-102.18, 21.32], [-102.52999999999997, 21.47], [-102.75, 22.0], [-102.64999999999998, 22.25], [-102.75, 22.5], [-102.64999999999998, 22.75], [-102.68, 22.82], [-103.02999999999997, 22.97]]]]}, "2025-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.52999999999997, 22.47], [-103.75, 23.0], [-103.52999999999997, 23.53], [-103.18, 23.68], [-103.02999999999997, 24.03], [-102.68, 24.18], [-102.52999999999997, 24.53], [-102.18, 24.68], [-102.14999999999998, 24.75], [-102.25, 25.0], [-102.02999999999997, 25.53], [-101.5, 25.75], [-101.25, 25.65], [-101.0, 25.75], [-100.47000000000003, 25.53], [-100.25, 25.0], [-100.35000000000002, 24.75], [-100.32, 24.68], [-99.97000000000003, 24.53], [-99.75, 24.0], [-99.85000000000002, 23.75], [-99.75, 23.5], [-99.97000000000003, 22.97], [-100.32, 22.82], [-100.47000000000003, 22.47], [-100.82, 22.32], [-100.85000000000002, 22.25], [-100.82, 22.18], [-100.47000000000003, 22.03], [-100.32, 21.68], [-99.97000000000003, 21.53], [-99.75, 21.0], [-99.97000000000003, 20.47], [-100.5, 20.25], [-100.75, 20.35], [-101.0, 20.25], [-101.52999999999997, 20.47], [-101.68, 20.82], [-102.02999999999997, 20.97], [-102.18, 21.32], [-102.25, 21.35], [-102.5, 21.25], [-103.02999999999997, 21.47], [-103.25, 22.0], [-103.14999999999998, 22.25], [-103.18, 22.32], [-103.52999999999997, 22.47]]]]}, "2025-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.52999999999997, 22.47], [-103.75, 23.0], [-103.52999999999997, 23.53], [-103.18, 23.68], [-103.02999999999997, 24.03], [-102.68, 24.18], [-102.52999999999997, 24.53], [-102.18, 24.68], [-102.14999999999998, 24.75], [-102.25, 25.0], [-102.02999999999997, 25.53], [-101.5, 25.75], [-101.25, 25.65], [-101.0, 25.75], [-100.47000000000003, 25.53], [-100.25, 25.0], [-100.35000000000002, 24.75], [-100.32, 24.68], [-99.97000000000003, 24.53], [-99.75, 24.0], [-99.85000000000002, 23.75], [-99.75, 23.5], [-99.97000000000003, 22.97], [-100.32, 22.82], [-100.47000000000003, 22.47], [-100.82, 22.32], [-100.85000000000002, 22.25], [-100.82, 22.18], [-100.47000000000003, 22.03], [-100.32, 21.68], [-99.97000000000003, 21.53], [-99.75, 21.0], [-99.97000000000003, 20.47], [-100.32, 20.32], [-100.47000000000003, 19.97], [-100.82, 19.82], [-100.97000000000003, 19.47], [-101.5, 19.25], [-101.75, 19.35], [-102.0, 19.25], [-102.52999999999997, 19.47], [-102.75, 20.0], [-102.64999999999998, 20.25], [-102.75, 20.5], [-102.64999999999998, 20.75], [-102.68, 20.82], [-103.02999999999997, 20.97], [-103.25, 21.5], [-103.14999999999998, 21.75], [-103.25, 22.0], [-103.14999999999998, 22.25], [-103.18, 22.32], [-103.52999999999997, 22.47]]]]}, "2025-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.52999999999997, 22.47], [-103.75, 23.0], [-103.52999999999997, 23.53], [-103.18, 23.68], [-103.02999999999997, 24.03], [-102.68, 24.18], [-102.52999999999997, 24.53], [-102.0, 24.75], [-101.75, 24.65], [-101.5, 24.75], [-100.97000000000003, 24.53], [-100.75, 24.0], [-100.85000000000002, 23.75], [-100.75, 23.5], [-100.85000000000002, 23.25], [-100.75, 23.0], [-100.85000000000002, 22.75], [-100.75, 22.5], [-100.85000000000002, 22.25], [-100.82, 22.18], [-100.47000000000003, 22.03], [-100.25, 21.5], [-100.35000000000002, 21.25], [-100.25, 21.0], [-100.35000000000002, 20.75], [-100.25, 20.5], [-100.47000000000003, 19.97], [-100.82, 19.82], [-100.97000000000003, 19.47], [-101.5, 19.25], [-101.75, 19.35], [-102.0, 19.25], [-102.52999999999997, 19.47], [-102.75, 20.0], [-102.64999999999998, 20.25], [-102.75, 20.5], [-102.64999999999998, 20.75], [-102.68, 20.82], [-103.02999999999997, 20.97], [-103.25, 21.5], [-103.14999999999998, 21.75], [-103.25, 22.0], [-103.14999999999998, 22.25], [-103.18, 22.32], [-103.52999999999997, 22.47]]]]}, "2025-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.52999999999997, 22.47], [-103.75, 23.0], [-103.52999999999997, 23.53], [-103.0, 23.75], [-102.75, 23.65], [-102.62, 23.7], [-102.75, 24.0], [-102.52999999999997, 24.53], [-102.0, 24.75], [-101.47000000000003, 24.53], [-101.25, 24.0], [-101.45999999999998, 23.5], [-101.25, 23.0], [-101.35000000000002, 22.75], [-101.25, 22.5], [-101.47000000000003, 21.97], [-101.82, 21.82], [-101.85000000000002, 21.75], [-101.82, 21.68], [-101.75, 21.65], [-101.5, 21.75], [-101.25, 21.65], [-101.0, 21.75], [-100.47000000000003, 21.53], [-100.25, 21.0], [-100.35000000000002, 20.75], [-100.25, 20.5], [-100.47000000000003, 19.97], [-100.82, 19.82], [-100.97000000000003, 19.47], [-101.5, 19.25], [-101.75, 19.35], [-102.0, 19.25], [-102.52999999999997, 19.47], [-102.75, 20.0], [-102.64999999999998, 20.25], [-102.75, 20.5], [-102.64999999999998, 20.75], [-102.68, 20.82], [-103.02999999999997, 20.97], [-103.25, 21.5], [-103.14999999999998, 21.75], [-103.25, 22.0], [-103.14999999999998, 22.25], [-103.18, 22.32], [-103.52999999999997, 22.47]]]]}, "2025-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.52999999999997, 21.53], [-102.0, 21.75], [-101.75, 21.65], [-101.5, 21.75], [-101.25, 21.65], [-101.0, 21.75], [-100.47000000000003, 21.53], [-100.25, 21.0], [-100.35000000000002, 20.75], [-100.25, 20.5], [-100.47000000000003, 19.97], [-100.82, 19.82], [-100.97000000000003, 19.47], [-101.5, 19.25], [-101.75, 19.35], [-102.0, 19.25], [-102.52999999999997, 19.47], [-102.75, 20.0], [-102.54000000000002, 20.5], [-102.75, 21.0], [-102.52999999999997, 21.53]]], [[[-103.02999999999997, 21.97], [-103.25, 22.5], [-103.02999999999997, 23.03], [-102.5, 23.25], [-101.97000000000003, 23.03], [-101.75, 22.5], [-101.97000000000003, 21.97], [-102.5, 21.75], [-103.02999999999997, 21.97]]], [[[-102.52999999999997, 23.47], [-102.75, 24.0], [-102.52999999999997, 24.53], [-102.0, 24.75], [-101.47000000000003, 24.53], [-101.25, 24.0], [-101.47000000000003, 23.47], [-102.0, 23.25], [-102.52999999999997, 23.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.4064090658642385}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.26169579611559}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.421203867594443, 19.865492757161462, 17.940222676595056, 17.85900607638888, 17.77068154471266, 17.07188398573129, 17.88592875162766, 18.007725016276027, 18.273334051061624]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.421203867594443, 19.865492757161462, 15.690263366699241, 15.833337402343773, 15.683325703938806, 14.765128072102868, 15.818165079752646, 16.051955159505212, 16.3582588195801]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.3183257792622953, -2.9643808612234466, -2.2903533840435366, -2.3166516169254385, -2.2241336228201516, -2.8910371164783664, -1.8229492093516637, -1.7744160835710403, -1.5850728087561063]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3183257792622953, -2.9643808612234466, -2.9733862123129597, -3.4115248368614743, -3.328758967700196, -4.4064090658642385, -2.588580441395436, -2.502832097297869, -2.708064201994432]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7450532095736653, -1.5690930268542307, -1.4683870077467078, -1.5704901009717878, -1.5982156326245138, -2.2003342787506472, -1.4358649860576571, -1.4430408789888305, -1.3909258403689746]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7450532095736653, -1.5690930268542307, -1.6008915507270796, -1.8504155606462604, -2.1947577370022118, -2.642703867800413, -1.6196206319300044, -1.8895117692369803, -1.5353032888740532]}}