{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:49.647123", "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-Mar-14_to_2013-Mar-16_5.5_35.0"}, "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": 2013030000493}, "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 14 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 16 2013"}, "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": 93878.1018790548}, "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": ["Algeria", "Tunisia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": []}, "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": 35.0}, "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": 5.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "5.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 3.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 9.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[3.47, 37.03], [4.0, 37.25], [4.25, 37.15], [4.5, 37.25], [5.03, 37.03], [5.18, 36.68], [5.25, 36.65], [5.5, 36.75], [6.03, 36.53], [6.18, 36.18], [6.53, 36.03], [6.68, 35.68], [6.75, 35.65], [7.0, 35.75], [7.25, 35.65], [7.5, 35.75], [7.75, 35.65], [8.0, 35.75], [8.25, 35.65], [8.5, 35.75], [9.03, 35.53], [9.18, 35.18], [9.53, 35.03], [9.75, 34.5], [9.65, 34.25], [9.75, 34.0], [9.53, 33.47], [9.0, 33.25], [8.75, 33.35], [8.68, 33.32], [8.53, 32.97], [8.0, 32.75], [7.75, 32.85], [7.5, 32.75], [6.97, 32.97], [6.82, 33.32], [6.75, 33.35], [6.5, 33.25], [6.25, 33.35], [6.0, 33.25], [5.75, 33.35], [5.5, 33.25], [4.97, 33.47], [4.82, 33.82], [4.47, 33.97], [4.25, 34.5], [4.35, 34.75], [4.32, 34.82], [3.97, 34.97], [3.82, 35.32], [3.47, 35.47], [3.25, 36.0], [3.35, 36.25], [3.25, 36.5], [3.47, 37.03]]]]}, "2013-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[3.47, 37.03], [4.0, 37.25], [4.25, 37.15], [4.5, 37.25], [5.03, 37.03], [5.18, 36.68], [5.25, 36.65], [5.5, 36.75], [6.03, 36.53], [6.18, 36.18], [6.53, 36.03], [6.68, 35.68], [6.75, 35.65], [7.0, 35.75], [7.25, 35.65], [7.5, 35.75], [7.75, 35.65], [8.0, 35.75], [8.25, 35.65], [8.5, 35.75], [9.03, 35.53], [9.18, 35.18], [9.53, 35.03], [9.75, 34.5], [9.65, 34.25], [9.75, 34.0], [9.53, 33.47], [9.0, 33.25], [8.75, 33.35], [8.68, 33.32], [8.53, 32.97], [8.0, 32.75], [7.75, 32.85], [7.5, 32.75], [6.97, 32.97], [6.82, 33.32], [6.75, 33.35], [6.5, 33.25], [6.25, 33.35], [6.0, 33.25], [5.75, 33.35], [5.5, 33.25], [4.97, 33.47], [4.82, 33.82], [4.47, 33.97], [4.25, 34.5], [4.35, 34.75], [4.32, 34.82], [3.97, 34.97], [3.82, 35.32], [3.47, 35.47], [3.25, 36.0], [3.35, 36.25], [3.25, 36.5], [3.47, 37.03]]]]}, "2013-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[3.47, 37.03], [4.0, 37.25], [4.25, 37.15], [4.5, 37.25], [5.03, 37.03], [5.18, 36.68], [5.25, 36.65], [5.5, 36.75], [6.03, 36.53], [6.18, 36.18], [6.53, 36.03], [6.68, 35.68], [6.75, 35.65], [7.0, 35.75], [7.25, 35.65], [7.5, 35.75], [7.75, 35.65], [8.0, 35.75], [8.25, 35.65], [8.5, 35.75], [9.03, 35.53], [9.18, 35.18], [9.53, 35.03], [9.75, 34.5], [9.65, 34.25], [9.75, 34.0], [9.53, 33.47], [9.0, 33.25], [8.75, 33.35], [8.68, 33.32], [8.53, 32.97], [8.0, 32.75], [7.75, 32.85], [7.5, 32.75], [6.97, 32.97], [6.82, 33.32], [6.75, 33.35], [6.5, 33.25], [6.25, 33.35], [6.0, 33.25], [5.75, 33.35], [5.5, 33.25], [4.97, 33.47], [4.82, 33.82], [4.47, 33.97], [4.25, 34.5], [4.35, 34.75], [4.32, 34.82], [3.97, 34.97], [3.82, 35.32], [3.47, 35.47], [3.25, 36.0], [3.35, 36.25], [3.25, 36.5], [3.47, 37.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.1958150182070995}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.863666485000755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.48038305010607, 9.228554438976573, 10.019435635799653]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.6512749439565368, 2.632522048736007, 4.717336418224363]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.471711231380217, -4.87720327241681, -4.242084951205243]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.1958150182070995, -6.254975781978374, -5.833572914147965]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.94346770157691, -1.7622784764348902, -1.5358878451293754]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.392378244148447, -2.1113178269607396, -2.051113830999572]}}