{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:47.209593", "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": "2012-Mar-06_to_2012-Mar-11_305.0_-2.5"}, "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": 2012030000517}, "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": "March 06 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 83257.69704121955}, "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": ["N.E.South-America", "N.South-America"]}, "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": -2.5}, "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": 304.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, -4.47], [-52.18, -4.32], [-52.15, -4.25], [-52.25, -4.0], [-52.03, -3.47], [-51.5, -3.25], [-50.97, -3.47], [-50.75, -4.0], [-50.85, -4.25], [-50.82, -4.32], [-50.47, -4.47], [-50.25, -5.0], [-50.35, -5.25], [-50.25, -5.5], [-50.47, -6.03], [-51.0, -6.25], [-51.25, -6.15], [-51.5, -6.25], [-52.03, -6.03], [-52.18, -5.68], [-52.53, -5.53], [-52.75, -5.0], [-52.53, -4.47]]], [[[-50.25, -4.5], [-50.03, -3.97], [-49.5, -3.75], [-48.97, -3.97], [-48.75, -4.5], [-48.97, -5.03], [-49.5, -5.25], [-50.03, -5.03], [-50.25, -4.5]]], [[[-55.75, -2.5], [-55.53, -1.97], [-55.0, -1.75], [-54.47, -1.97], [-54.25, -2.5], [-54.47, -3.03], [-55.0, -3.25], [-55.53, -3.03], [-55.75, -2.5]]]]}, "2012-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -3.03], [-55.75, -2.5], [-55.53, -1.97], [-55.0, -1.75], [-54.75, -1.85], [-54.5, -1.75], [-53.97, -1.97], [-53.82, -2.32], [-53.47, -2.47], [-53.32, -2.82], [-53.25, -2.85], [-53.0, -2.75], [-52.75, -2.85], [-52.68, -2.82], [-52.53, -2.47], [-52.0, -2.25], [-51.75, -2.35], [-51.5, -2.25], [-50.97, -2.47], [-50.82, -2.82], [-50.47, -2.97], [-50.32, -3.32], [-49.97, -3.47], [-49.82, -3.82], [-49.75, -3.85], [-49.5, -3.75], [-48.97, -3.97], [-48.75, -4.5], [-48.97, -5.03], [-49.5, -5.25], [-49.75, -5.15], [-50.0, -5.25], [-50.25, -5.15], [-50.32, -5.18], [-50.35, -5.25], [-50.25, -5.5], [-50.47, -6.03], [-51.0, -6.25], [-51.25, -6.15], [-51.5, -6.25], [-52.03, -6.03], [-52.18, -5.68], [-52.53, -5.53], [-52.75, -5.0], [-52.53, -4.47], [-52.18, -4.32], [-52.15, -4.25], [-52.18, -4.18], [-52.25, -4.15], [-52.5, -4.25], [-52.75, -4.15], [-53.0, -4.25], [-53.25, -4.15], [-53.5, -4.25], [-53.75, -4.15], [-54.0, -4.25], [-54.53, -4.03], [-54.75, -3.5], [-54.65, -3.25], [-54.68, -3.18], [-54.75, -3.15], [-55.0, -3.25], [-55.53, -3.03]]]]}, "2012-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -3.03], [-55.75, -2.5], [-55.53, -1.97], [-55.0, -1.75], [-54.75, -1.85], [-54.5, -1.75], [-53.97, -1.97], [-53.82, -2.32], [-53.47, -2.47], [-53.32, -2.82], [-53.25, -2.85], [-53.0, -2.75], [-52.75, -2.85], [-52.68, -2.82], [-52.53, -2.47], [-52.0, -2.25], [-51.75, -2.35], [-51.5, -2.25], [-50.97, -2.47], [-50.82, -2.82], [-50.47, -2.97], [-50.32, -3.32], [-49.97, -3.47], [-49.82, -3.82], [-49.75, -3.85], [-49.5, -3.75], [-48.97, -3.97], [-48.75, -4.5], [-48.97, -5.03], [-49.5, -5.25], [-49.75, -5.15], [-50.0, -5.25], [-50.25, -5.15], [-50.32, -5.18], [-50.35, -5.25], [-50.25, -5.5], [-50.47, -6.03], [-51.0, -6.25], [-51.25, -6.15], [-51.5, -6.25], [-52.03, -6.03], [-52.18, -5.68], [-52.53, -5.53], [-52.75, -5.0], [-52.53, -4.47], [-52.18, -4.32], [-52.15, -4.25], [-52.18, -4.18], [-52.25, -4.15], [-52.5, -4.25], [-52.75, -4.15], [-53.0, -4.25], [-53.25, -4.15], [-53.5, -4.25], [-53.75, -4.15], [-54.0, -4.25], [-54.53, -4.03], [-54.75, -3.5], [-54.65, -3.25], [-54.68, -3.18], [-54.75, -3.15], [-55.0, -3.25], [-55.53, -3.03]]]]}, "2012-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -1.97], [-55.0, -1.75], [-54.75, -1.85], [-54.5, -1.75], [-53.97, -1.97], [-53.82, -2.32], [-53.75, -2.35], [-53.5, -2.25], [-52.97, -2.47], [-52.82, -2.82], [-52.75, -2.85], [-52.68, -2.82], [-52.53, -2.47], [-52.0, -2.25], [-51.75, -2.35], [-51.5, -2.25], [-50.97, -2.47], [-50.82, -2.82], [-50.47, -2.97], [-50.32, -3.32], [-49.97, -3.47], [-49.82, -3.82], [-49.47, -3.97], [-49.25, -4.5], [-49.47, -5.03], [-50.0, -5.25], [-50.25, -5.15], [-50.32, -5.18], [-50.47, -5.53], [-50.82, -5.68], [-50.97, -6.03], [-51.5, -6.25], [-52.03, -6.03], [-52.18, -5.68], [-52.53, -5.53], [-52.75, -5.0], [-52.53, -4.47], [-52.18, -4.32], [-52.15, -4.25], [-52.18, -4.18], [-52.25, -4.15], [-52.5, -4.25], [-52.75, -4.15], [-53.0, -4.25], [-53.25, -4.15], [-53.5, -4.25], [-53.75, -4.15], [-54.0, -4.25], [-54.53, -4.03], [-54.7, -3.62], [-55.0, -3.75], [-55.53, -3.53], [-55.75, -3.0], [-55.65, -2.75], [-55.75, -2.5], [-55.53, -1.97]]]]}, "2012-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -1.97], [-55.0, -1.75], [-54.47, -1.97], [-54.3, -2.38], [-54.0, -2.25], [-53.75, -2.35], [-53.5, -2.25], [-52.97, -2.47], [-52.82, -2.82], [-52.47, -2.97], [-52.25, -3.5], [-52.47, -4.03], [-53.0, -4.25], [-53.25, -4.15], [-53.5, -4.25], [-53.75, -4.15], [-54.0, -4.25], [-54.53, -4.03], [-54.7, -3.62], [-55.0, -3.75], [-55.53, -3.53], [-55.75, -3.0], [-55.65, -2.75], [-55.75, -2.5], [-55.53, -1.97]]]]}, "2012-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -1.97], [-55.0, -1.75], [-54.47, -1.97], [-54.3, -2.38], [-54.0, -2.25], [-53.75, -2.35], [-53.5, -2.25], [-52.97, -2.47], [-52.75, -3.0], [-52.97, -3.53], [-53.5, -3.75], [-53.75, -3.65], [-54.0, -3.75], [-54.5, -3.54], [-55.0, -3.75], [-55.53, -3.53], [-55.75, -3.0], [-55.65, -2.75], [-55.75, -2.5], [-55.53, -1.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8227987146979103}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.656612873743984}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.063699794831734, 23.20791081302201, 24.183921817912733, 23.837093372451818, 24.065608590851866, 24.396224056696724]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.115393243127016, 22.126928960945122, 23.429572723569493, 22.491634167733253, 22.938991285249074, 23.814356795596268]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4217904907747854, -2.2742436933046677, -1.285876928533171, -1.6220933997034512, -1.3680655951166127, -1.3625747210892172]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8768191101968341, -2.8227987146979103, -1.6905405536454055, -2.5368074397701434, -1.9033120220850037, -1.591614173575124]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5824738585560363, -2.495433591604404, -1.4066431737158647, -1.749332319417045, -1.477297709924097, -1.4957217284685458]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.036015305553279, -2.988489594829481, -1.7848795765020087, -2.614387421224009, -1.9521827522500348, -1.8286045671865323]}}