{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:18.192462", "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": "2015-Feb-18_to_2015-Feb-22_305.0_-15.0"}, "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": 2015020000697}, "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": "February 18 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 22 2015"}, "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": 75000.98030247797}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": -15.0}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 302.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.0, -14.25], [-54.47, -14.47], [-54.25, -15.0], [-54.47, -15.53], [-55.0, -15.75], [-55.53, -15.53], [-55.75, -15.0], [-55.53, -14.47], [-55.0, -14.25]]]]}, "2015-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, -12.47], [-57.5, -12.25], [-57.2, -12.38], [-57.03, -11.97], [-56.5, -11.75], [-56.2, -11.88], [-56.03, -11.47], [-55.5, -11.25], [-54.97, -11.47], [-54.82, -11.82], [-54.47, -11.97], [-54.25, -12.5], [-54.47, -13.03], [-55.0, -13.25], [-55.25, -13.15], [-55.32, -13.18], [-55.35, -13.25], [-55.32, -13.32], [-54.97, -13.47], [-54.82, -13.82], [-54.75, -13.85], [-54.5, -13.75], [-53.97, -13.97], [-53.75, -14.5], [-53.87, -14.8], [-53.47, -14.97], [-53.25, -15.5], [-53.47, -16.03], [-54.0, -16.25], [-54.25, -16.15], [-54.5, -16.25], [-54.75, -16.15], [-55.0, -16.25], [-55.53, -16.03], [-55.68, -15.68], [-55.75, -15.65], [-56.0, -15.75], [-56.25, -15.65], [-56.5, -15.75], [-57.03, -15.53], [-57.25, -15.0], [-57.03, -14.47], [-56.68, -14.32], [-56.65, -14.25], [-56.68, -14.18], [-56.75, -14.15], [-57.0, -14.25], [-57.25, -14.15], [-57.5, -14.25], [-58.03, -14.03], [-58.25, -13.5], [-58.15, -13.25], [-58.25, -13.0], [-58.03, -12.47]]]]}, "2015-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.15, -12.75], [-58.25, -12.5], [-58.03, -11.97], [-57.5, -11.75], [-57.0, -11.96], [-56.5, -11.75], [-56.2, -11.88], [-56.03, -11.47], [-55.5, -11.25], [-54.97, -11.47], [-54.82, -11.82], [-54.47, -11.97], [-54.25, -12.5], [-54.47, -13.03], [-55.0, -13.25], [-55.25, -13.15], [-55.32, -13.18], [-55.35, -13.25], [-55.32, -13.32], [-54.97, -13.47], [-54.82, -13.82], [-54.75, -13.85], [-54.5, -13.75], [-53.97, -13.97], [-53.75, -14.5], [-53.87, -14.8], [-53.47, -14.97], [-53.25, -15.5], [-53.47, -16.03], [-54.0, -16.25], [-54.25, -16.15], [-54.5, -16.25], [-54.75, -16.15], [-55.0, -16.25], [-55.53, -16.03], [-55.68, -15.68], [-55.75, -15.65], [-56.0, -15.75], [-56.25, -15.65], [-56.5, -15.75], [-57.03, -15.53], [-57.25, -15.0], [-57.03, -14.47], [-56.68, -14.32], [-56.65, -14.25], [-56.68, -14.18], [-56.75, -14.15], [-57.0, -14.25], [-57.25, -14.15], [-57.5, -14.25], [-58.03, -14.03], [-58.25, -13.5], [-58.15, -13.25], [-58.25, -13.0], [-58.15, -12.75]]]]}, "2015-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.15, -12.75], [-58.25, -12.5], [-58.03, -11.97], [-57.5, -11.75], [-57.0, -11.96], [-56.5, -11.75], [-56.2, -11.88], [-56.03, -11.47], [-55.5, -11.25], [-54.97, -11.47], [-54.82, -11.82], [-54.47, -11.97], [-54.25, -12.5], [-54.47, -13.03], [-55.0, -13.25], [-55.25, -13.15], [-55.32, -13.18], [-55.35, -13.25], [-55.32, -13.32], [-54.97, -13.47], [-54.82, -13.82], [-54.75, -13.85], [-54.5, -13.75], [-53.97, -13.97], [-53.75, -14.5], [-53.87, -14.8], [-53.47, -14.97], [-53.25, -15.5], [-53.47, -16.03], [-54.0, -16.25], [-54.25, -16.15], [-54.5, -16.25], [-54.75, -16.15], [-55.0, -16.25], [-55.53, -16.03], [-55.68, -15.68], [-55.75, -15.65], [-56.0, -15.75], [-56.25, -15.65], [-56.5, -15.75], [-57.03, -15.53], [-57.25, -15.0], [-57.03, -14.47], [-56.68, -14.32], [-56.65, -14.25], [-56.68, -14.18], [-56.75, -14.15], [-57.0, -14.25], [-57.25, -14.15], [-57.5, -14.25], [-58.03, -14.03], [-58.25, -13.5], [-58.15, -13.25], [-58.25, -13.0], [-58.15, -12.75]]]]}, "2015-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.5, -11.75], [-56.97, -11.97], [-56.75, -12.5], [-56.97, -13.03], [-57.5, -13.25], [-58.03, -13.03], [-58.25, -12.5], [-58.03, -11.97], [-57.5, -11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5868181017410166}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8575939857801333}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.618900528005724, 23.079160907201242, 22.900002312215065, 23.245589090537578, 23.4435351730084]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.618900528005724, 21.893317715468868, 21.713926967750297, 22.26947549117523, 23.4435351730084]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4877405141111808, -1.8365452508350562, -2.042698758980248, -1.7276671214542239, -1.353169374275808]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4877405141111808, -2.459063340947125, -2.5868181017410166, -2.2998761205028586, -1.353169374275808]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3884371707437895, -1.6717594547797343, -1.8824346660881668, -1.5828139271065362, -1.3592341827756778]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3884371707437895, -2.1474670956956774, -2.263092160486199, -1.9884601240582926, -1.3592341827756778]}}