{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:36.266862", "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-Feb-12_to_2012-Feb-17_304.5_1.5"}, "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": 2012020000749}, "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 12 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 17 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": 77193.98992694383}, "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", "Guyana", "Suriname"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 1.5}, "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": 304.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.15, 1.75], [-56.25, 2.0], [-56.03, 2.53], [-55.5, 2.75], [-54.97, 2.53], [-54.82, 2.18], [-54.75, 2.15], [-54.5, 2.25], [-53.97, 2.03], [-53.75, 1.5], [-53.97, 0.97], [-54.32, 0.82], [-54.47, 0.47], [-55.0, 0.25], [-55.25, 0.35], [-55.5, 0.25], [-56.03, 0.47], [-56.25, 1.0], [-56.15, 1.25], [-56.25, 1.5], [-56.15, 1.75]]]]}, "2012-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.15, 1.75], [-56.25, 2.0], [-56.03, 2.53], [-55.5, 2.75], [-54.97, 2.53], [-54.82, 2.18], [-54.75, 2.15], [-54.5, 2.25], [-53.97, 2.03], [-53.75, 1.5], [-53.97, 0.97], [-54.32, 0.82], [-54.47, 0.47], [-55.0, 0.25], [-55.25, 0.35], [-55.5, 0.25], [-56.03, 0.47], [-56.25, 1.0], [-56.15, 1.25], [-56.25, 1.5], [-56.15, 1.75]]]]}, "2012-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 3.53], [-57.68, 3.68], [-57.53, 4.03], [-57.0, 4.25], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.82, 2.68], [-55.75, 2.65], [-55.5, 2.75], [-54.97, 2.53], [-54.82, 2.18], [-54.75, 2.15], [-54.5, 2.25], [-53.97, 2.03], [-53.75, 1.5], [-53.97, 0.97], [-54.32, 0.82], [-54.47, 0.47], [-55.0, 0.25], [-55.25, 0.35], [-55.5, 0.25], [-56.03, 0.47], [-56.18, 0.82], [-56.25, 0.85], [-56.5, 0.75], [-57.03, 0.97], [-57.25, 1.5], [-57.15, 1.75], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.25, 2.5], [-58.15, 2.75], [-58.25, 3.0], [-58.03, 3.53]]]]}, "2012-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.53, 3.53], [-59.18, 3.68], [-59.03, 4.03], [-58.68, 4.18], [-58.53, 4.53], [-58.0, 4.75], [-57.75, 4.65], [-57.5, 4.75], [-56.97, 4.53], [-56.82, 4.18], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.82, 2.68], [-55.75, 2.65], [-55.5, 2.75], [-54.97, 2.53], [-54.75, 2.0], [-54.85, 1.75], [-54.82, 1.68], [-54.47, 1.53], [-54.25, 1.0], [-54.47, 0.47], [-55.0, 0.25], [-55.25, 0.35], [-55.5, 0.25], [-56.03, 0.47], [-56.18, 0.82], [-56.25, 0.85], [-56.5, 0.75], [-57.03, 0.97], [-57.25, 1.5], [-57.15, 1.75], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.2, 2.38], [-58.32, 2.32], [-58.47, 1.97], [-59.0, 1.75], [-59.53, 1.97], [-59.75, 2.5], [-59.65, 2.75], [-59.75, 3.0], [-59.53, 3.53]]]]}, "2012-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.53, 3.53], [-59.18, 3.68], [-59.03, 4.03], [-58.68, 4.18], [-58.53, 4.53], [-58.0, 4.75], [-57.75, 4.65], [-57.5, 4.75], [-56.97, 4.53], [-56.82, 4.18], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.82, 2.68], [-55.75, 2.65], [-55.5, 2.75], [-54.97, 2.53], [-54.75, 2.0], [-54.85, 1.75], [-54.82, 1.68], [-54.47, 1.53], [-54.25, 1.0], [-54.47, 0.47], [-55.0, 0.25], [-55.53, 0.47], [-55.68, 0.82], [-55.75, 0.85], [-56.0, 0.75], [-56.25, 0.85], [-56.5, 0.75], [-57.03, 0.97], [-57.25, 1.5], [-57.15, 1.75], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.2, 2.38], [-58.32, 2.32], [-58.47, 1.97], [-59.0, 1.75], [-59.53, 1.97], [-59.75, 2.5], [-59.65, 2.75], [-59.75, 3.0], [-59.53, 3.53]]]]}, "2012-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.53, 3.53], [-59.18, 3.68], [-59.03, 4.03], [-58.68, 4.18], [-58.53, 4.53], [-58.0, 4.75], [-57.75, 4.65], [-57.5, 4.75], [-56.97, 4.53], [-56.82, 4.18], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.82, 2.68], [-55.75, 2.65], [-55.5, 2.75], [-54.97, 2.53], [-54.75, 2.0], [-54.85, 1.75], [-54.82, 1.68], [-54.47, 1.53], [-54.25, 1.0], [-54.47, 0.47], [-55.0, 0.25], [-55.53, 0.47], [-55.68, 0.82], [-55.75, 0.85], [-56.0, 0.75], [-56.25, 0.85], [-56.5, 0.75], [-57.03, 0.97], [-57.25, 1.5], [-57.15, 1.75], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.2, 2.38], [-58.32, 2.32], [-58.47, 1.97], [-59.0, 1.75], [-59.53, 1.97], [-59.75, 2.5], [-59.65, 2.75], [-59.75, 3.0], [-59.53, 3.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6275713924350725}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8207885263966304}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.86116686913948, 23.044447257768923, 22.693442755073306, 23.479213267291925, 23.54626225958293, 22.90067604360644]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.395058974626807, 22.63394571791673, 21.8838360763624, 22.62558336499552, 22.44760352290274, 21.55019794839933]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6868799845623432, -1.4494635388426882, -2.106739191278681, -1.6129596238418704, -1.57621386095843, -2.199467947839103]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.180442064884346, -1.7995102067727657, -2.4251941459434647, -2.2297440069846743, -2.288462375555241, -2.6275713924350725]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6878949221543422, -1.4765401054761391, -2.1059307143881214, -1.6440122269350328, -1.6653044459627473, -2.323357302217637]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9666803609733456, -1.9101756305124802, -2.4322661137004524, -2.1447859078263374, -2.3256484127218293, -2.621612465713507]}}