{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:07.224129", "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-Aug-04_to_2012-Aug-09_349.0_31.0"}, "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": 2012080000302}, "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": "August 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 09 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": 54839.553497950605}, "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"]}, "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"]}, "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": 31.0}, "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": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\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": 352.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.18, 32.18], [-11.03, 32.53], [-10.68, 32.68], [-10.53, 33.03], [-10.18, 33.18], [-10.03, 33.53], [-9.68, 33.68], [-9.53, 34.03], [-9.0, 34.25], [-8.75, 34.15], [-8.5, 34.25], [-7.97, 34.03], [-7.75, 33.5], [-7.97, 32.97], [-8.32, 32.82], [-8.47, 32.47], [-9.0, 32.25], [-9.25, 32.35], [-9.32, 32.32], [-9.47, 31.97], [-9.82, 31.82], [-9.85, 31.75], [-9.75, 31.5], [-9.97, 30.97], [-10.32, 30.82], [-10.47, 30.47], [-11.0, 30.25], [-11.25, 30.35], [-11.5, 30.25], [-12.03, 30.47], [-12.25, 31.0], [-12.03, 31.53], [-11.68, 31.68], [-11.53, 32.03], [-11.18, 32.18]]]]}, "2012-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 31.53], [-11.68, 31.68], [-11.53, 32.03], [-11.18, 32.18], [-11.03, 32.53], [-10.68, 32.68], [-10.53, 33.03], [-10.18, 33.18], [-10.03, 33.53], [-9.68, 33.68], [-9.53, 34.03], [-9.0, 34.25], [-8.75, 34.15], [-8.5, 34.25], [-8.25, 34.15], [-8.0, 34.25], [-7.75, 34.15], [-7.5, 34.25], [-6.97, 34.03], [-6.75, 33.5], [-6.97, 32.97], [-7.5, 32.75], [-7.75, 32.85], [-7.82, 32.82], [-7.97, 32.47], [-8.5, 32.25], [-8.75, 32.35], [-9.0, 32.25], [-9.25, 32.35], [-9.32, 32.32], [-9.47, 31.97], [-9.82, 31.82], [-9.85, 31.75], [-9.75, 31.5], [-9.85, 31.25], [-9.75, 31.0], [-9.97, 30.47], [-10.5, 30.25], [-10.75, 30.35], [-10.82, 30.32], [-10.97, 29.97], [-11.5, 29.75], [-12.03, 29.97], [-12.25, 30.5], [-12.15, 30.75], [-12.25, 31.0], [-12.03, 31.53]]]]}, "2012-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 31.53], [-11.68, 31.68], [-11.65, 31.75], [-11.75, 32.0], [-11.53, 32.53], [-11.18, 32.68], [-11.15, 32.75], [-11.25, 33.0], [-11.03, 33.53], [-10.5, 33.75], [-10.25, 33.65], [-10.18, 33.68], [-10.03, 34.03], [-9.5, 34.25], [-9.25, 34.15], [-9.0, 34.25], [-8.75, 34.15], [-8.5, 34.25], [-8.25, 34.15], [-8.0, 34.25], [-7.75, 34.15], [-7.5, 34.25], [-6.97, 34.03], [-6.75, 33.5], [-6.97, 32.97], [-7.5, 32.75], [-7.75, 32.85], [-7.82, 32.82], [-7.97, 32.47], [-8.5, 32.25], [-8.75, 32.35], [-9.0, 32.25], [-9.25, 32.35], [-9.32, 32.32], [-9.47, 31.97], [-9.82, 31.82], [-9.85, 31.75], [-9.75, 31.5], [-9.85, 31.25], [-9.75, 31.0], [-9.97, 30.47], [-10.5, 30.25], [-10.75, 30.35], [-10.82, 30.32], [-10.97, 29.97], [-11.5, 29.75], [-12.03, 29.97], [-12.25, 30.5], [-12.15, 30.75], [-12.25, 31.0], [-12.03, 31.53]]]]}, "2012-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.75, 31.0], [-12.53, 31.53], [-12.0, 31.75], [-11.75, 31.65], [-11.68, 31.68], [-11.65, 31.75], [-11.75, 32.0], [-11.53, 32.53], [-11.18, 32.68], [-11.15, 32.75], [-11.25, 33.0], [-11.03, 33.53], [-10.5, 33.75], [-10.25, 33.65], [-10.18, 33.68], [-10.03, 34.03], [-9.5, 34.25], [-9.25, 34.15], [-9.0, 34.25], [-8.5, 34.04], [-8.0, 34.25], [-7.75, 34.15], [-7.5, 34.25], [-6.97, 34.03], [-6.75, 33.5], [-6.97, 32.97], [-7.5, 32.75], [-7.75, 32.85], [-7.82, 32.82], [-7.97, 32.47], [-8.5, 32.25], [-8.75, 32.35], [-9.0, 32.25], [-9.25, 32.35], [-9.32, 32.32], [-9.47, 31.97], [-9.82, 31.82], [-9.85, 31.75], [-9.75, 31.5], [-9.85, 31.25], [-9.75, 31.0], [-9.97, 30.47], [-10.5, 30.25], [-10.75, 30.35], [-10.82, 30.32], [-10.97, 29.97], [-11.5, 29.75], [-12.03, 29.97], [-12.18, 30.32], [-12.53, 30.47], [-12.75, 31.0]]]]}, "2012-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.75, 31.0], [-12.53, 31.53], [-12.0, 31.75], [-11.75, 31.65], [-11.68, 31.68], [-11.65, 31.75], [-11.75, 32.0], [-11.53, 32.53], [-11.18, 32.68], [-11.15, 32.75], [-11.25, 33.0], [-11.03, 33.53], [-10.5, 33.75], [-10.25, 33.65], [-10.18, 33.68], [-10.03, 34.03], [-9.5, 34.25], [-8.97, 34.03], [-8.82, 33.68], [-8.47, 33.53], [-8.25, 33.0], [-8.47, 32.47], [-9.0, 32.25], [-9.25, 32.35], [-9.32, 32.32], [-9.47, 31.97], [-9.82, 31.82], [-9.85, 31.75], [-9.75, 31.5], [-9.85, 31.25], [-9.75, 31.0], [-9.97, 30.47], [-10.5, 30.25], [-10.75, 30.35], [-10.82, 30.32], [-10.97, 29.97], [-11.5, 29.75], [-12.03, 29.97], [-12.18, 30.32], [-12.53, 30.47], [-12.75, 31.0]]]]}, "2012-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 30.47], [-12.75, 31.0], [-12.53, 31.53], [-12.0, 31.75], [-11.75, 31.65], [-11.68, 31.68], [-11.53, 32.03], [-11.18, 32.18], [-11.03, 32.53], [-10.5, 32.75], [-9.97, 32.53], [-9.75, 32.0], [-9.85, 31.75], [-9.75, 31.5], [-9.97, 30.97], [-10.32, 30.82], [-10.47, 30.47], [-11.0, 30.25], [-11.25, 30.35], [-11.5, 30.25], [-11.75, 30.35], [-12.0, 30.25], [-12.53, 30.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.419255411990207}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1428041562463926}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.93900712919651, 21.096345710153912, 21.138268462849965, 20.98565979946875, 20.720199432014624, 20.855080984409938]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.470695237124517, 19.854471231222078, 20.05134258006865, 19.742354666455242, 19.743188867085905, 20.523666977174344]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9313820240055464, -1.0835264989906477, -1.0958106857473269, -1.2808080882861503, -1.274970938513146, -0.9875555619401837]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1904055349245937, -2.2114340018578673, -2.419255411990207, -2.1964218404487497, -1.6040056039669253, -1.1127686246953203]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6094030436544255, -1.5015549684379037, -1.4555472550437893, -1.6171294137004721, -1.710596433621231, -1.3670849226597994]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7875335978304887, -1.881898543704106, -1.7996836914274843, -2.2050602950621805, -2.241764818994948, -1.531114048241445]}}