{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:14.708081", "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": "2018-Oct-04_to_2018-Oct-10_273.5_13.0"}, "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": 2018100000217}, "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 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 10 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 78254.83799262656}, "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", "Honduras", "Nicaragua"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["North 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": 13.0}, "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": 273.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 269.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 275.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.0, 12.75], [-84.47, 12.53], [-84.25, 12.0], [-84.47, 11.47], [-85.0, 11.25], [-85.53, 11.47], [-85.75, 12.0], [-85.53, 12.53], [-85.0, 12.75]]]]}, "2018-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.25, 13.0], [-88.03, 13.53], [-87.5, 13.75], [-87.25, 13.65], [-87.18, 13.68], [-87.15, 13.75], [-87.25, 14.0], [-87.03, 14.53], [-86.5, 14.75], [-85.97, 14.53], [-85.82, 14.18], [-85.7, 14.12], [-85.53, 14.53], [-85.0, 14.75], [-84.75, 14.65], [-84.5, 14.75], [-83.97, 14.53], [-83.75, 14.0], [-83.97, 13.47], [-84.32, 13.32], [-84.47, 12.97], [-84.82, 12.82], [-84.85, 12.75], [-84.82, 12.68], [-84.47, 12.53], [-84.25, 12.0], [-84.47, 11.47], [-85.0, 11.25], [-85.5, 11.46], [-86.0, 11.25], [-86.25, 11.35], [-86.5, 11.25], [-87.03, 11.47], [-87.18, 11.82], [-87.53, 11.97], [-87.68, 12.32], [-88.03, 12.47], [-88.25, 13.0]]]]}, "2018-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.03, 12.97], [-89.25, 13.5], [-89.03, 14.03], [-88.5, 14.25], [-88.25, 14.15], [-88.18, 14.18], [-88.03, 14.53], [-87.5, 14.75], [-87.0, 14.54], [-86.5, 14.75], [-85.97, 14.53], [-85.82, 14.18], [-85.7, 14.12], [-85.53, 14.53], [-85.0, 14.75], [-84.75, 14.65], [-84.5, 14.75], [-83.97, 14.53], [-83.75, 14.0], [-83.97, 13.47], [-84.32, 13.32], [-84.47, 12.97], [-84.82, 12.82], [-84.85, 12.75], [-84.82, 12.68], [-84.47, 12.53], [-84.25, 12.0], [-84.47, 11.47], [-85.0, 11.25], [-85.5, 11.46], [-86.0, 11.25], [-86.25, 11.35], [-86.5, 11.25], [-87.03, 11.47], [-87.18, 11.82], [-87.53, 11.97], [-87.68, 12.32], [-88.03, 12.47], [-88.18, 12.82], [-88.25, 12.85], [-88.5, 12.75], [-89.03, 12.97]]]]}, "2018-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.03, 12.97], [-90.25, 13.5], [-90.03, 14.03], [-89.5, 14.25], [-89.25, 14.15], [-89.0, 14.25], [-88.75, 14.15], [-88.5, 14.25], [-88.25, 14.15], [-88.18, 14.18], [-88.03, 14.53], [-87.5, 14.75], [-87.0, 14.54], [-86.5, 14.75], [-85.97, 14.53], [-85.82, 14.18], [-85.7, 14.12], [-85.53, 14.53], [-85.0, 14.75], [-84.75, 14.65], [-84.5, 14.75], [-83.97, 14.53], [-83.75, 14.0], [-83.97, 13.47], [-84.32, 13.32], [-84.47, 12.97], [-84.82, 12.82], [-84.85, 12.75], [-84.75, 12.5], [-84.97, 11.97], [-85.32, 11.82], [-85.47, 11.47], [-86.0, 11.25], [-86.25, 11.35], [-86.5, 11.25], [-87.03, 11.47], [-87.18, 11.82], [-87.53, 11.97], [-87.68, 12.32], [-88.03, 12.47], [-88.18, 12.82], [-88.25, 12.85], [-88.5, 12.75], [-88.75, 12.85], [-89.0, 12.75], [-89.25, 12.85], [-89.5, 12.75], [-90.03, 12.97]]]]}, "2018-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.53, 12.97], [-90.75, 13.5], [-90.53, 14.03], [-90.0, 14.25], [-89.75, 14.15], [-89.5, 14.25], [-89.25, 14.15], [-89.0, 14.25], [-88.75, 14.15], [-88.5, 14.25], [-88.25, 14.15], [-88.18, 14.18], [-88.03, 14.53], [-87.5, 14.75], [-86.97, 14.53], [-86.82, 14.18], [-86.47, 14.03], [-86.32, 13.68], [-85.97, 13.53], [-85.75, 13.0], [-85.97, 12.47], [-86.5, 12.25], [-86.75, 12.35], [-87.0, 12.25], [-87.53, 12.47], [-87.68, 12.82], [-87.75, 12.85], [-88.0, 12.75], [-88.25, 12.85], [-88.5, 12.75], [-88.75, 12.85], [-89.0, 12.75], [-89.25, 12.85], [-89.5, 12.75], [-89.75, 12.85], [-90.0, 12.75], [-90.53, 12.97]]]]}, "2018-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.53, 12.97], [-90.75, 13.5], [-90.53, 14.03], [-90.0, 14.25], [-89.75, 14.15], [-89.5, 14.25], [-89.25, 14.15], [-89.0, 14.25], [-88.47, 14.03], [-88.25, 13.5], [-88.47, 12.97], [-89.0, 12.75], [-89.25, 12.85], [-89.5, 12.75], [-89.75, 12.85], [-90.0, 12.75], [-90.53, 12.97]]]]}, "2018-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.0, 14.25], [-89.47, 14.03], [-89.25, 13.5], [-89.47, 12.97], [-90.0, 12.75], [-90.53, 12.97], [-90.75, 13.5], [-90.53, 14.03], [-90.0, 14.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9458060072414582}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7337843567678533}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.728752859971166, 23.210116372079085, 22.863835540207617, 23.32080427110651, 23.733576114460107, 24.54072854337329, 25.79100616057542]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.728752859971166, 20.58578221793374, 19.928879917061295, 20.177163732612314, 20.13348281296345, 23.802973716719237, 25.79100616057542]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1426328242403088, -1.6714491408682415, -2.0328581708335665, -1.605878685949025, -1.66851308363606, -1.4075438020389395, -1.2694425471335649]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1426328242403088, -2.287561083708681, -2.9458060072414582, -2.631063461740382, -1.956498118836521, -1.6160720708929261, -1.2694425471335649]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5688700883446067, -1.8850310280254214, -2.1992736278683664, -1.6999117626040914, -1.7159847619537423, -1.6193036400093028, -1.5368554486062287]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5688700883446067, -2.8277676326695618, -3.1330378155919303, -2.4218592959486664, -2.067215190073265, -1.8446221560166984, -1.5368554486062287]}}