{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:31.946320", "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-27_to_2015-Mar-29_300.0_-17.5"}, "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": 2015030000990}, "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 27 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 29 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 70912.42754662316}, "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": ["Bolivia", "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": -17.5}, "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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -16.0], [-62.03, -15.47], [-61.5, -15.25], [-61.25, -15.35], [-61.18, -15.32], [-61.03, -14.97], [-60.5, -14.75], [-59.97, -14.97], [-59.82, -15.32], [-59.47, -15.47], [-59.32, -15.82], [-59.25, -15.85], [-59.0, -15.75], [-58.47, -15.97], [-58.25, -16.5], [-58.35, -16.75], [-58.32, -16.82], [-57.97, -16.97], [-57.75, -17.5], [-57.85, -17.75], [-57.82, -17.82], [-57.47, -17.97], [-57.25, -18.5], [-57.47, -19.03], [-58.0, -19.25], [-58.25, -19.15], [-58.5, -19.25], [-58.75, -19.15], [-59.0, -19.25], [-59.53, -19.03], [-59.68, -18.68], [-60.03, -18.53], [-60.18, -18.18], [-60.53, -18.03], [-60.68, -17.68], [-61.03, -17.53], [-61.18, -17.18], [-61.53, -17.03], [-61.68, -16.68], [-62.03, -16.53], [-62.25, -16.0]]]]}, "2015-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -16.0], [-62.03, -15.47], [-61.5, -15.25], [-61.25, -15.35], [-61.18, -15.32], [-61.03, -14.97], [-60.5, -14.75], [-59.97, -14.97], [-59.82, -15.32], [-59.47, -15.47], [-59.32, -15.82], [-59.25, -15.85], [-59.0, -15.75], [-58.47, -15.97], [-58.25, -16.5], [-58.35, -16.75], [-58.32, -16.82], [-57.97, -16.97], [-57.75, -17.5], [-57.85, -17.75], [-57.82, -17.82], [-57.47, -17.97], [-57.25, -18.5], [-57.47, -19.03], [-58.0, -19.25], [-58.25, -19.15], [-58.5, -19.25], [-58.75, -19.15], [-59.0, -19.25], [-59.53, -19.03], [-59.68, -18.68], [-60.03, -18.53], [-60.18, -18.18], [-60.53, -18.03], [-60.68, -17.68], [-61.03, -17.53], [-61.18, -17.18], [-61.53, -17.03], [-61.68, -16.68], [-62.03, -16.53], [-62.25, -16.0]]]]}, "2015-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -16.0], [-62.03, -15.47], [-61.5, -15.25], [-61.25, -15.35], [-61.18, -15.32], [-61.03, -14.97], [-60.5, -14.75], [-59.97, -14.97], [-59.82, -15.32], [-59.47, -15.47], [-59.32, -15.82], [-59.25, -15.85], [-59.0, -15.75], [-58.47, -15.97], [-58.25, -16.5], [-58.35, -16.75], [-58.32, -16.82], [-57.97, -16.97], [-57.75, -17.5], [-57.85, -17.75], [-57.82, -17.82], [-57.47, -17.97], [-57.25, -18.5], [-57.47, -19.03], [-58.0, -19.25], [-58.25, -19.15], [-58.5, -19.25], [-58.75, -19.15], [-59.0, -19.25], [-59.53, -19.03], [-59.68, -18.68], [-60.03, -18.53], [-60.18, -18.18], [-60.53, -18.03], [-60.68, -17.68], [-61.03, -17.53], [-61.18, -17.18], [-61.53, -17.03], [-61.68, -16.68], [-62.03, -16.53], [-62.25, -16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.497971408708736}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1712951767308337}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.394973980619568, 21.76972025532615, 23.2447248547561]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.143693860949213, 19.92023779164583, 21.512324993031143]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1965800169211653, -3.8765087693099836, -2.4407967439613523]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.358889140826818, -5.497971408708736, -3.2508804425486346]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8742563083902672, -2.331730610299623, -1.4863967641213505]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4997945144558074, -2.811299615277047, -1.761771770639101]}}