{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:08.047042", "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": "2024-Jan-29_to_2024-Feb-01_268.5_17.0"}, "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": 2024010000797}, "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 29 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 2024"}, "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": 86014.88385054402}, "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": ["El Salvador", "Guatemala", "Honduras", "Mexico"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "America", "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": 17.0}, "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": 268.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "268.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 266.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 271.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-94.18, 17.18], [-94.03, 17.53], [-93.5, 17.75], [-93.25, 17.65], [-93.18, 17.68], [-93.03, 18.03], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.5, 18.25], [-91.25, 18.15], [-91.0, 18.25], [-90.47, 18.03], [-90.32, 17.68], [-89.97, 17.53], [-89.82, 17.18], [-89.47, 17.03], [-89.25, 16.5], [-89.35, 16.25], [-89.25, 16.0], [-89.35, 15.75], [-89.32, 15.68], [-88.97, 15.53], [-88.82, 15.18], [-88.47, 15.03], [-88.25, 14.5], [-88.47, 13.97], [-88.82, 13.82], [-88.97, 13.47], [-89.5, 13.25], [-90.03, 13.47], [-90.25, 14.0], [-90.15, 14.25], [-90.25, 14.5], [-90.15, 14.75], [-90.18, 14.82], [-90.25, 14.85], [-90.5, 14.75], [-91.03, 14.97], [-91.18, 15.32], [-91.53, 15.47], [-91.68, 15.82], [-91.75, 15.85], [-92.0, 15.75], [-92.3, 15.88], [-92.47, 15.47], [-93.0, 15.25], [-93.25, 15.35], [-93.5, 15.25], [-94.03, 15.47], [-94.18, 15.82], [-94.53, 15.97], [-94.75, 16.5], [-94.53, 17.03], [-94.18, 17.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.52999999999997, 15.97], [-94.75, 16.5], [-94.52999999999997, 17.03], [-94.18, 17.18], [-94.02999999999997, 17.53], [-93.5, 17.75], [-93.25, 17.65], [-93.18, 17.68], [-93.02999999999997, 18.03], [-92.5, 18.25], [-91.97000000000003, 18.03], [-91.82, 17.68], [-91.75, 17.65], [-91.5, 17.75], [-90.97000000000003, 17.53], [-90.75, 17.0], [-90.97000000000003, 16.47], [-91.32, 16.32], [-91.47000000000003, 15.97], [-92.0, 15.75], [-92.30000000000001, 15.88], [-92.47000000000003, 15.47], [-93.0, 15.25], [-93.25, 15.35], [-93.5, 15.25], [-94.02999999999997, 15.47], [-94.18, 15.82], [-94.52999999999997, 15.97]]]]}, "2024-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.52999999999997, 15.97], [-94.75, 16.5], [-94.52999999999997, 17.03], [-94.18, 17.18], [-94.02999999999997, 17.53], [-93.5, 17.75], [-93.25, 17.65], [-93.18, 17.68], [-93.02999999999997, 18.03], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.5, 18.25], [-91.25, 18.15], [-91.0, 18.25], [-90.47000000000003, 18.03], [-90.32, 17.68], [-89.97000000000003, 17.53], [-89.82, 17.18], [-89.47000000000003, 17.03], [-89.25, 16.5], [-89.35000000000002, 16.25], [-89.25, 16.0], [-89.35000000000002, 15.75], [-89.32, 15.68], [-88.97000000000003, 15.53], [-88.82, 15.18], [-88.47000000000003, 15.03], [-88.25, 14.5], [-88.47000000000003, 13.97], [-88.82, 13.82], [-88.97000000000003, 13.47], [-89.5, 13.25], [-90.02999999999997, 13.47], [-90.25, 14.0], [-90.14999999999998, 14.25], [-90.25, 14.5], [-90.14999999999998, 14.75], [-90.18, 14.82], [-90.25, 14.85], [-90.5, 14.75], [-91.02999999999997, 14.97], [-91.18, 15.32], [-91.52999999999997, 15.47], [-91.68, 15.82], [-91.75, 15.85], [-92.0, 15.75], [-92.30000000000001, 15.88], [-92.47000000000003, 15.47], [-93.0, 15.25], [-93.25, 15.35], [-93.5, 15.25], [-94.02999999999997, 15.47], [-94.18, 15.82], [-94.52999999999997, 15.97]]]]}, "2024-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.52999999999997, 15.97], [-94.75, 16.5], [-94.52999999999997, 17.03], [-94.18, 17.18], [-94.02999999999997, 17.53], [-93.5, 17.75], [-93.25, 17.65], [-93.18, 17.68], [-93.02999999999997, 18.03], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.5, 18.25], [-91.25, 18.15], [-91.0, 18.25], [-90.47000000000003, 18.03], [-90.32, 17.68], [-89.97000000000003, 17.53], [-89.82, 17.18], [-89.47000000000003, 17.03], [-89.25, 16.5], [-89.35000000000002, 16.25], [-89.25, 16.0], [-89.35000000000002, 15.75], [-89.32, 15.68], [-88.97000000000003, 15.53], [-88.82, 15.18], [-88.47000000000003, 15.03], [-88.25, 14.5], [-88.47000000000003, 13.97], [-88.82, 13.82], [-88.97000000000003, 13.47], [-89.5, 13.25], [-90.02999999999997, 13.47], [-90.25, 14.0], [-90.14999999999998, 14.25], [-90.25, 14.5], [-90.14999999999998, 14.75], [-90.18, 14.82], [-90.25, 14.85], [-90.5, 14.75], [-91.02999999999997, 14.97], [-91.18, 15.32], [-91.52999999999997, 15.47], [-91.68, 15.82], [-91.75, 15.85], [-92.0, 15.75], [-92.30000000000001, 15.88], [-92.47000000000003, 15.47], [-93.0, 15.25], [-93.25, 15.35], [-93.5, 15.25], [-94.02999999999997, 15.47], [-94.18, 15.82], [-94.52999999999997, 15.97]]]]}, "2024-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.52999999999997, 18.03], [-92.0, 18.25], [-91.75, 18.15], [-91.5, 18.25], [-91.25, 18.15], [-91.0, 18.25], [-90.47000000000003, 18.03], [-90.32, 17.68], [-89.97000000000003, 17.53], [-89.82, 17.18], [-89.47000000000003, 17.03], [-89.25, 16.5], [-89.35000000000002, 16.25], [-89.25, 16.0], [-89.35000000000002, 15.75], [-89.32, 15.68], [-88.97000000000003, 15.53], [-88.82, 15.18], [-88.47000000000003, 15.03], [-88.25, 14.5], [-88.47000000000003, 13.97], [-88.82, 13.82], [-88.97000000000003, 13.47], [-89.5, 13.25], [-90.02999999999997, 13.47], [-90.25, 14.0], [-90.14999999999998, 14.25], [-90.25, 14.5], [-90.14999999999998, 14.75], [-90.18, 14.82], [-90.25, 14.85], [-90.5, 14.75], [-91.02999999999997, 14.97], [-91.18, 15.32], [-91.52999999999997, 15.47], [-91.68, 15.82], [-92.02999999999997, 15.97], [-92.18, 16.32], [-92.25, 16.35], [-92.5, 16.25], [-93.02999999999997, 16.47], [-93.25, 17.0], [-93.02999999999997, 17.53], [-92.68, 17.68], [-92.52999999999997, 18.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.792981783954758}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.695491022520978}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.586846736560233, 17.855835689234596, 18.0131543592575, 18.906402486750324]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.402645816371944, 12.490162046528383, 12.635547535850208, 14.383596056941144]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6554896579213194, -2.8658334627250692, -2.802770519306593, -2.33306144337311]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2671368301136567, -3.792981783954758, -3.5977651673273954, -3.0690767193365787]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6288939908449367, -1.877738284449511, -1.8718946732460815, -1.6466501798558024]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.994094211849456, -2.373924548598825, -2.3201753828794227, -2.2724174343114463]}}