{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:27.693406", "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-Mar-02_to_2015-Mar-05_303.5_4.0"}, "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": 2015030000185}, "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 02 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 129442.01908543972}, "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": ["French Guiana", "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": ["North Atlantic 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": 4.0}, "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": 303.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.5\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": 307.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.0, 6.75], [-56.75, 6.65], [-56.5, 6.75], [-55.97, 6.53], 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5.68], [-55.25, 5.65], [-55.0, 5.75], [-54.75, 5.65], [-54.5, 5.75], [-54.25, 5.65], [-54.0, 5.75], [-53.47, 5.53], [-53.32, 5.18], [-53.25, 5.15], [-53.0, 5.25], [-52.47, 5.03], [-52.32, 4.68], [-51.97, 4.53], [-51.75, 4.0], [-51.97, 3.47], [-52.5, 3.25], [-52.75, 3.35], [-53.0, 3.25], [-53.25, 3.35], [-53.32, 3.32], [-53.47, 2.97], [-53.82, 2.82], [-53.97, 2.47], [-54.5, 2.25], [-54.75, 2.35], [-55.0, 2.25], [-55.25, 2.35], [-55.5, 2.25], [-55.75, 2.35], [-56.0, 2.25], [-56.53, 2.47], [-56.7, 2.88], [-57.0, 2.75], [-57.53, 2.97], [-57.75, 3.5], [-57.65, 3.75], [-57.75, 4.0], [-57.65, 4.25], [-57.68, 4.32], [-58.03, 4.47], [-58.25, 5.0], [-58.15, 5.25], [-58.25, 5.5], [-58.03, 6.03]]]]}, "2015-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 6.03], [-57.68, 6.18], [-57.53, 6.53], [-57.0, 6.75], [-56.75, 6.65], [-56.5, 6.75], [-55.97, 6.53], [-55.82, 6.18], [-55.47, 6.03], [-55.32, 5.68], [-55.25, 5.65], [-55.0, 5.75], [-54.75, 5.65], [-54.5, 5.75], [-54.25, 5.65], [-54.0, 5.75], [-53.47, 5.53], [-53.32, 5.18], [-53.25, 5.15], [-53.0, 5.25], [-52.47, 5.03], [-52.32, 4.68], [-51.97, 4.53], [-51.75, 4.0], [-51.97, 3.47], [-52.5, 3.25], [-52.75, 3.35], [-53.0, 3.25], [-53.25, 3.35], [-53.32, 3.32], [-53.47, 2.97], [-53.82, 2.82], [-53.97, 2.47], [-54.5, 2.25], [-54.75, 2.35], [-55.0, 2.25], [-55.25, 2.35], [-55.5, 2.25], [-55.75, 2.35], [-56.0, 2.25], [-56.53, 2.47], [-56.7, 2.88], [-57.0, 2.75], [-57.53, 2.97], [-57.75, 3.5], [-57.65, 3.75], [-57.75, 4.0], [-57.65, 4.25], [-57.68, 4.32], [-58.03, 4.47], [-58.25, 5.0], [-58.15, 5.25], [-58.25, 5.5], [-58.03, 6.03]]]]}, "2015-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 6.03], [-57.5, 6.25], [-56.97, 6.03], [-56.82, 5.68], [-56.47, 5.53], [-56.32, 5.18], [-55.97, 5.03], [-55.75, 4.5], [-55.85, 4.25], [-55.75, 4.0], [-55.97, 3.47], [-56.5, 3.25], [-57.03, 3.47], [-57.25, 4.0], [-57.15, 4.25], [-57.18, 4.32], [-57.25, 4.35], [-57.5, 4.25], [-58.03, 4.47], [-58.25, 5.0], [-58.15, 5.25], [-58.25, 5.5], [-58.03, 6.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.575740047669001}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6449192421912506}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.81555404941855, 23.550491469391773, 23.975347816302133, 24.45403911873541]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.631619129224816, 22.584929042648184, 23.178847827649236, 23.904334204856866]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.612998606909842, -1.897182769620702, -1.4905617628629766, -1.0778735203926317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1952100692418526, -2.575740047669001, -2.044275045144275, -1.1431555332221137]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0509520545017645, -2.401102413934901, -1.8955216675821096, -1.3813802149006968]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.868188061087848, -3.078688118863353, -2.724213952704991, -1.5597847132275564]}}