{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:59.654064", "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": "2013-Apr-04_to_2013-Apr-08_352.0_34.5"}, "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": 2013040000220}, "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": "April 04 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2013"}, "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": 192864.66532141942}, "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": ["Morocco", "Portugal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "N.Atlantic-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Europe"]}, "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": 34.5}, "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": 352.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.25, 31.5], [-8.03, 32.03], [-7.5, 32.25], [-7.25, 32.15], [-7.18, 32.18], [-7.04, 32.5], [-7.25, 33.0], [-7.03, 33.53], [-6.5, 33.75], [-6.25, 33.65], [-6.18, 33.68], [-6.03, 34.03], [-5.62, 34.2], [-5.75, 34.5], [-5.53, 35.03], [-5.0, 35.25], [-4.75, 35.15], [-4.5, 35.25], [-3.97, 35.03], [-3.75, 34.5], [-3.97, 33.97], [-4.37, 33.8], [-4.32, 33.68], [-3.97, 33.53], [-3.75, 33.0], [-3.97, 32.47], [-4.32, 32.32], [-4.47, 31.97], [-4.82, 31.82], [-4.97, 31.47], [-5.5, 31.25], [-5.75, 31.35], [-5.82, 31.32], [-5.97, 30.97], [-6.5, 30.75], [-6.75, 30.85], [-7.0, 30.75], [-7.25, 30.85], [-7.5, 30.75], [-8.03, 30.97], [-8.25, 31.5]]], [[[-9.53, 34.53], [-9.18, 34.68], [-9.15, 34.75], [-9.25, 35.0], [-9.15, 35.25], [-9.25, 35.5], [-9.15, 35.75], [-9.25, 36.0], [-9.03, 36.53], [-8.5, 36.75], [-7.97, 36.53], [-7.82, 36.18], [-7.47, 36.03], [-7.32, 35.68], [-6.97, 35.53], [-6.75, 35.0], [-6.85, 34.75], [-6.75, 34.5], [-6.97, 33.97], [-7.32, 33.82], [-7.47, 33.47], [-7.82, 33.32], [-7.97, 32.97], [-8.32, 32.82], [-8.47, 32.47], [-9.0, 32.25], [-9.25, 32.35], [-9.5, 32.25], [-10.03, 32.47], [-10.25, 33.0], [-10.03, 33.53], [-9.68, 33.68], [-9.65, 33.75], [-9.75, 34.0], [-9.53, 34.53]]]]}, "2013-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 36.03], [-12.18, 36.18], [-12.15, 36.25], [-12.25, 36.5], [-12.03, 37.03], [-11.5, 37.25], [-11.25, 37.15], [-11.18, 37.18], [-11.03, 37.53], [-10.5, 37.75], [-10.25, 37.65], [-10.18, 37.68], [-10.03, 38.03], [-9.68, 38.18], [-9.65, 38.25], [-9.75, 38.5], [-9.53, 39.03], [-9.0, 39.25], [-8.47, 39.03], [-8.25, 38.5], [-8.35, 38.25], [-8.25, 38.0], [-8.35, 37.75], [-8.32, 37.68], [-7.97, 37.53], [-7.75, 37.0], [-7.85, 36.75], [-7.82, 36.68], [-7.47, 36.53], [-7.25, 36.0], [-7.35, 35.75], [-7.32, 35.68], [-6.97, 35.53], [-6.82, 35.18], [-6.47, 35.03], [-6.25, 34.5], [-6.43, 34.07], [-6.0, 34.25], [-5.75, 34.15], [-5.68, 34.18], [-5.65, 34.25], [-5.75, 34.5], [-5.53, 35.03], [-5.0, 35.25], [-4.75, 35.15], [-4.5, 35.25], [-3.97, 35.03], [-3.75, 34.5], [-3.97, 33.97], [-4.32, 33.82], [-4.35, 33.75], [-4.32, 33.68], [-3.97, 33.53], [-3.75, 33.0], [-3.97, 32.47], [-4.32, 32.32], [-4.47, 31.97], [-4.82, 31.82], [-4.97, 31.47], [-5.5, 31.25], [-5.75, 31.35], [-5.82, 31.32], [-5.97, 30.97], [-6.5, 30.75], [-6.75, 30.85], [-7.0, 30.75], [-7.25, 30.85], [-7.5, 30.75], [-8.03, 30.97], [-8.25, 31.5], [-8.03, 32.03], [-7.5, 32.25], [-7.25, 32.15], [-7.18, 32.18], [-7.04, 32.5], [-7.25, 33.0], [-7.07, 33.43], [-7.5, 33.25], [-7.75, 33.35], [-7.82, 33.32], [-7.97, 32.97], [-8.32, 32.82], [-8.47, 32.47], [-9.0, 32.25], [-9.25, 32.35], [-9.5, 32.25], [-10.03, 32.47], [-10.25, 33.0], [-10.15, 33.25], [-10.25, 33.5], [-10.03, 34.03], [-9.68, 34.18], [-9.62, 34.3], [-10.03, 34.47], [-10.18, 34.82], [-10.25, 34.85], [-10.32, 34.82], [-10.47, 34.47], [-11.0, 34.25], [-11.25, 34.35], [-11.5, 34.25], [-11.75, 34.35], [-12.0, 34.25], [-12.53, 34.47], [-12.75, 35.0], [-12.65, 35.25], [-12.75, 35.5], [-12.53, 36.03]], [[-6.82, 33.82], [-6.93, 33.57], [-6.68, 33.68], [-6.57, 33.93], [-6.82, 33.82]]]]}, "2013-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 36.03], [-12.18, 36.18], [-12.15, 36.25], [-12.25, 36.5], [-12.03, 37.03], [-11.5, 37.25], [-11.25, 37.15], [-11.18, 37.18], [-11.03, 37.53], [-10.5, 37.75], [-10.25, 37.65], [-10.18, 37.68], [-10.03, 38.03], [-9.68, 38.18], [-9.65, 38.25], [-9.75, 38.5], [-9.53, 39.03], [-9.0, 39.25], [-8.47, 39.03], [-8.25, 38.5], [-8.35, 38.25], [-8.25, 38.0], [-8.35, 37.75], [-8.32, 37.68], [-7.97, 37.53], [-7.75, 37.0], [-7.85, 36.75], [-7.82, 36.68], [-7.47, 36.53], [-7.25, 36.0], [-7.35, 35.75], [-7.32, 35.68], [-6.97, 35.53], [-6.82, 35.18], [-6.5, 35.04], [-6.0, 35.25], [-5.5, 35.04], [-5.0, 35.25], [-4.75, 35.15], [-4.5, 35.25], [-3.97, 35.03], [-3.75, 34.5], [-3.97, 33.97], [-4.32, 33.82], [-4.35, 33.75], [-4.32, 33.68], [-3.97, 33.53], [-3.75, 33.0], [-3.97, 32.47], [-4.32, 32.32], [-4.47, 31.97], [-4.82, 31.82], [-4.97, 31.47], [-5.5, 31.25], [-5.75, 31.35], [-5.82, 31.32], [-5.97, 30.97], [-6.5, 30.75], [-6.75, 30.85], [-7.0, 30.75], [-7.25, 30.85], [-7.5, 30.75], [-8.03, 30.97], [-8.25, 31.5], [-8.03, 32.03], [-7.5, 32.25], [-7.25, 32.15], [-7.18, 32.18], [-7.04, 32.5], [-7.2, 32.88], [-7.5, 32.75], [-8.0, 32.96], [-8.32, 32.82], [-8.47, 32.47], [-9.0, 32.25], [-9.25, 32.35], [-9.5, 32.25], [-10.03, 32.47], [-10.25, 33.0], [-10.15, 33.25], [-10.25, 33.5], [-10.03, 34.03], [-9.68, 34.18], [-9.62, 34.3], [-10.03, 34.47], [-10.18, 34.82], [-10.25, 34.85], [-10.32, 34.82], [-10.47, 34.47], [-11.0, 34.25], [-11.25, 34.35], [-11.5, 34.25], [-11.75, 34.35], [-12.0, 34.25], [-12.53, 34.47], [-12.75, 35.0], [-12.65, 35.25], [-12.75, 35.5], [-12.53, 36.03]]]]}, "2013-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 36.03], [-12.18, 36.18], [-12.15, 36.25], [-12.25, 36.5], [-12.03, 37.03], [-11.5, 37.25], [-11.25, 37.15], [-11.18, 37.18], [-11.03, 37.53], [-10.5, 37.75], [-10.25, 37.65], [-10.18, 37.68], [-10.03, 38.03], [-9.68, 38.18], [-9.65, 38.25], [-9.75, 38.5], [-9.53, 39.03], [-9.0, 39.25], [-8.47, 39.03], [-8.25, 38.5], [-8.35, 38.25], [-8.25, 38.0], [-8.35, 37.75], [-8.32, 37.68], [-7.97, 37.53], [-7.75, 37.0], [-7.85, 36.75], [-7.82, 36.68], [-7.47, 36.53], [-7.25, 36.0], [-7.35, 35.75], [-7.32, 35.68], [-6.97, 35.53], [-6.82, 35.18], [-6.5, 35.04], [-6.0, 35.25], [-5.47, 35.03], [-5.3, 34.62], [-5.0, 34.75], [-4.47, 34.53], [-4.25, 34.0], [-4.47, 33.47], [-5.0, 33.25], [-5.3, 33.38], [-5.47, 32.97], [-6.0, 32.75], [-6.53, 32.97], [-6.68, 33.32], [-6.8, 33.38], [-6.97, 32.97], [-7.5, 32.75], [-8.0, 32.96], [-8.32, 32.82], [-8.47, 32.47], [-9.0, 32.25], [-9.25, 32.35], [-9.5, 32.25], [-10.03, 32.47], [-10.25, 33.0], [-10.15, 33.25], [-10.25, 33.5], [-10.03, 34.03], [-9.68, 34.18], [-9.62, 34.3], [-10.03, 34.47], [-10.18, 34.82], [-10.25, 34.85], [-10.32, 34.82], [-10.47, 34.47], [-11.0, 34.25], [-11.25, 34.35], [-11.5, 34.25], [-11.75, 34.35], [-12.0, 34.25], [-12.53, 34.47], [-12.75, 35.0], [-12.65, 35.25], [-12.75, 35.5], [-12.53, 36.03]]]]}, "2013-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.68, 34.68], [-6.53, 35.03], [-6.0, 35.25], [-5.47, 35.03], [-5.25, 34.5], [-5.47, 33.97], [-5.82, 33.82], [-5.97, 33.47], [-6.5, 33.25], [-6.8, 33.38], [-6.97, 32.97], [-7.5, 32.75], [-8.03, 32.97], [-8.25, 33.5], [-8.03, 34.03], [-7.5, 34.25], [-7.2, 34.12], [-7.03, 34.53], [-6.68, 34.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.915711387337296}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.869156020894168}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.1217235507346, 11.953934060221854, 11.759570022633113, 13.814771680280671, 13.504238448539525]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.652671312319967, 1.0042046634993653, 0.8592920621144344, 9.874909626967678, 13.035782217832832]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5643874114885987, -2.771556286752703, -3.161440304126869, -2.16599222638224, -3.554758643601815]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.9167001817760365, -6.610542878244132, -6.915711387337296, -5.452523499313656, -4.097622040497356]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.626331473097856, -1.572194349966016, -1.915805200123253, -1.6664941643241353, -1.3657678292402469]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.009750047170759, -2.0228199563831657, -2.6412039801665856, -2.0112829223044937, -1.3967833849534677]}}