{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:41.707174", "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": "2019-May-15_to_2019-May-19_305.5_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": 2019050000435}, "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": "May 15 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 19 2019"}, "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": 58713.179892356915}, "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", "French Guiana"]}, "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": 305.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.25}, "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": -0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 1.5], [-56.53, 2.03], [-56.0, 2.25], [-55.75, 2.15], [-55.68, 2.18], [-55.65, 2.25], [-55.75, 2.5], [-55.53, 3.03], [-55.0, 3.25], [-54.5, 3.04], [-54.0, 3.25], [-53.47, 3.03], [-53.25, 2.5], [-53.47, 1.97], [-53.82, 1.82], [-53.97, 1.47], [-54.32, 1.32], [-54.35, 1.25], [-54.25, 1.0], [-54.46, 0.5], [-54.25, 0.0], [-54.47, -0.53], [-54.82, -0.68], [-54.97, -1.03], [-55.5, -1.25], [-56.03, -1.03], [-56.25, -0.5], [-56.15, -0.25], [-56.18, -0.18], [-56.25, -0.15], [-56.5, -0.25], [-57.03, -0.03], [-57.25, 0.5], [-57.03, 1.03], [-56.68, 1.18], [-56.65, 1.25], [-56.75, 1.5]]]]}, "2019-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 1.5], [-56.53, 2.03], [-56.0, 2.25], [-55.75, 2.15], [-55.68, 2.18], [-55.65, 2.25], [-55.75, 2.5], [-55.53, 3.03], [-55.0, 3.25], [-54.5, 3.04], [-54.0, 3.25], [-53.47, 3.03], [-53.25, 2.5], [-53.46, 2.0], [-53.25, 1.5], [-53.35, 1.25], [-53.25, 1.0], [-53.47, 0.47], [-54.0, 0.25], [-54.43, 0.43], [-54.25, 0.0], [-54.47, -0.53], [-54.82, -0.68], [-54.97, -1.03], [-55.5, -1.25], [-56.03, -1.03], [-56.25, -0.5], [-56.15, -0.25], [-56.18, -0.18], [-56.25, -0.15], [-56.5, -0.25], [-57.03, -0.03], [-57.25, 0.5], [-57.03, 1.03], [-56.68, 1.18], [-56.65, 1.25], [-56.75, 1.5]]]]}, "2019-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 1.5], [-56.53, 2.03], [-56.0, 2.25], [-55.75, 2.15], [-55.68, 2.18], [-55.65, 2.25], [-55.75, 2.5], [-55.53, 3.03], [-55.0, 3.25], [-54.5, 3.04], [-54.0, 3.25], [-53.47, 3.03], [-53.25, 2.5], [-53.46, 2.0], [-53.25, 1.5], [-53.35, 1.25], [-53.25, 1.0], [-53.47, 0.47], [-54.0, 0.25], [-54.43, 0.43], [-54.25, 0.0], [-54.47, -0.53], [-54.82, -0.68], [-54.97, -1.03], [-55.5, -1.25], [-56.03, -1.03], [-56.25, -0.5], [-56.15, -0.25], [-56.18, -0.18], [-56.25, -0.15], [-56.5, -0.25], [-57.03, -0.03], [-57.25, 0.5], [-57.03, 1.03], [-56.68, 1.18], [-56.65, 1.25], [-56.75, 1.5]]]]}, "2019-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.25, 1.5], [-55.03, 2.03], [-54.62, 2.2], [-54.75, 2.5], [-54.53, 3.03], [-54.0, 3.25], [-53.47, 3.03], [-53.25, 2.5], [-53.46, 2.0], [-53.25, 1.5], [-53.35, 1.25], [-53.25, 1.0], [-53.47, 0.47], [-54.0, 0.25], [-54.53, 0.47], [-54.68, 0.82], [-55.03, 0.97], [-55.25, 1.5]]]]}, "2019-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.5, 2.25], [-53.97, 2.03], [-53.75, 1.5], [-53.97, 0.97], [-54.5, 0.75], [-55.03, 0.97], [-55.25, 1.5], [-55.03, 2.03], [-54.5, 2.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8713461625442278}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3525457959201166}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.434987789166485, 23.434178970892958, 23.386591627242012, 23.949034778819566, 23.756407900087368]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.924714217043118, 22.54282813328797, 22.989470930778054, 23.58007163574399, 23.756407900087368]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.34897707992452, -1.3721463885041114, -1.4011360228087082, -1.1011835918608455, -1.119468498107608]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6418997136959774, -1.8713461625442278, -1.8006519700952595, -1.2850955850523746, -1.119468498107608]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.722480483259407, -1.7253452079046214, -1.7570912274516384, -1.4545107153550942, -1.4541488039440493]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.317415426932502, -2.1574276885219255, -2.2244450104123494, -1.6485873190059386, -1.4541488039440493]}}