{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:51.183485", "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-Sep-06_to_2024-Sep-10_257.5_25.0"}, "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": 2024090000193}, "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": "September 06 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 2024"}, "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": 103610.40653870713}, "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": 25.0}, "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": 257.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-105.68, 26.18], [-105.53, 26.53], [-105.18, 26.68], [-105.03, 27.03], [-104.5, 27.25], [-104.0, 27.04], [-103.5, 27.25], [-102.97, 27.03], [-102.82, 26.68], [-102.47, 26.53], [-102.32, 26.18], [-102.25, 26.15], [-102.0, 26.25], [-101.75, 26.15], [-101.5, 26.25], [-101.25, 26.15], [-101.0, 26.25], [-100.47, 26.03], [-100.25, 25.5], [-100.47, 24.97], [-100.82, 24.82], [-100.85, 24.75], [-100.75, 24.5], [-100.97, 23.97], [-101.32, 23.82], [-101.47, 23.47], [-102.0, 23.25], [-102.25, 23.35], [-102.32, 23.32], [-102.47, 22.97], [-103.0, 22.75], [-103.25, 22.85], [-103.5, 22.75], [-104.03, 22.97], [-104.2, 23.38], [-104.5, 23.25], [-105.03, 23.47], [-105.25, 24.0], [-105.12, 24.3], [-105.53, 24.47], [-105.68, 24.82], [-106.03, 24.97], [-106.25, 25.5], [-106.03, 26.03], [-105.68, 26.18]]]]}}, "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": {"2024-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.53, 24.97], [-104.75, 25.5], [-104.53, 26.03], [-104.0, 26.25], [-103.75, 26.15], [-103.5, 26.25], [-103.25, 26.15], [-103.0, 26.25], [-102.75, 26.15], [-102.5, 26.25], [-102.25, 26.15], [-102.0, 26.25], [-101.75, 26.15], [-101.5, 26.25], [-100.97000000000003, 26.03], [-100.75, 25.5], [-100.85000000000002, 25.25], [-100.75, 25.0], [-100.97000000000003, 24.47], [-101.5, 24.25], [-101.75, 24.35], [-101.82, 24.32], [-101.97000000000003, 23.97], [-102.5, 23.75], [-102.75, 23.85], [-103.0, 23.75], [-103.25, 23.85], [-103.5, 23.75], [-104.03, 23.97], [-104.25, 24.5], [-104.15, 24.75], [-104.18, 24.82], [-104.53, 24.97]]]]}, "2024-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.03, 24.97], [-106.25, 25.5], [-106.03, 26.03], [-105.68, 26.18], [-105.53, 26.53], [-105.0, 26.75], [-104.75, 26.65], [-104.5, 26.75], [-104.25, 26.65], [-104.18, 26.68], [-104.03, 27.03], [-103.5, 27.25], [-102.97000000000003, 27.03], [-102.82, 26.68], [-102.47000000000003, 26.53], [-102.32, 26.18], [-102.25, 26.15], [-102.0, 26.25], [-101.75, 26.15], [-101.5, 26.25], [-101.25, 26.15], [-101.0, 26.25], [-100.47000000000003, 26.03], [-100.25, 25.5], [-100.47000000000003, 24.97], [-100.82, 24.82], [-100.85000000000002, 24.75], [-100.75, 24.5], [-100.97000000000003, 23.97], [-101.32, 23.82], [-101.47000000000003, 23.47], [-102.0, 23.25], [-102.25, 23.35], [-102.32, 23.32], [-102.47000000000003, 22.97], [-103.0, 22.75], [-103.25, 22.85], [-103.5, 22.75], [-104.03, 22.97], [-104.19999999999999, 23.38], [-104.5, 23.25], [-105.03, 23.47], [-105.25, 24.0], [-105.12, 24.3], [-105.53, 24.47], [-105.68, 24.82], [-106.03, 24.97]]]]}, "2024-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.03, 24.97], [-106.25, 25.5], [-106.03, 26.03], [-105.68, 26.18], [-105.53, 26.53], [-105.18, 26.68], [-105.03, 27.03], [-104.5, 27.25], [-104.0, 27.04], [-103.5, 27.25], [-102.97000000000003, 27.03], [-102.82, 26.68], 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[20.332763926188193, 19.275182342529263, 18.561599745191984, 18.252523831204257, 20.261800719144105]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.91227238972982, 15.712234751383505, 14.572511291503929, 14.361993408203148, 16.17749938964846]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7008884406759415, -2.5910556831856977, -3.347817034072419, -3.634184795243787, -2.7612605336521066]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3048328837444387, -3.633369789628091, -4.334579376910369, -4.959157024399246, -3.6747307333478147]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4648406305754655, -1.5008715374054002, -1.982636323359912, -2.1265182289711246, -1.4318000858421447]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.660793079087678, -1.8685675546345923, -2.4548588552082653, -2.66342086104159, -1.7418567274825756]}}