{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:44.996493", "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": "2011-Feb-08_to_2011-Feb-13_35.0_-11.5"}, "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": 2011020000506}, "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": "February 08 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 13 2011"}, "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": 54326.9174431945}, "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": ["Malawi", "Mozambique", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "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": -11.5}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, -11.5], [33.47, -10.97], [34.0, -10.75], [34.5, -10.96], [35.0, -10.75], [35.25, -10.85], [35.5, -10.75], [35.75, -10.85], [36.0, -10.75], [36.53, -10.97], [36.75, -11.5], [36.53, -12.03], [36.18, -12.18], [36.03, -12.53], [35.68, -12.68], [35.53, -13.03], [35.0, -13.25], [34.75, -13.15], [34.5, -13.25], [33.97, -13.03], [33.75, -12.5], [33.85, -12.25], [33.82, -12.18], [33.47, -12.03], [33.25, -11.5]]]]}, "2011-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, -11.5], [33.47, -10.97], [34.0, -10.75], [34.5, -10.96], [35.0, -10.75], [35.25, -10.85], [35.5, -10.75], [35.75, -10.85], [36.0, -10.75], [36.53, -10.97], [36.75, -11.5], [36.63, -11.8], [36.75, -11.85], [37.0, -11.75], [37.53, -11.97], [37.75, -12.5], [37.53, -13.03], [37.0, -13.25], [36.75, -13.15], [36.68, -13.18], [36.53, -13.53], [36.0, -13.75], [35.57, -13.57], [35.75, -14.0], [35.53, -14.53], [35.0, -14.75], [34.47, -14.53], [34.32, -14.18], [33.97, -14.03], [33.75, -13.5], [33.85, -13.25], [33.75, -13.0], [33.85, -12.75], [33.75, -12.5], [33.85, -12.25], [33.82, -12.18], [33.47, -12.03], [33.25, -11.5]], [[35.15, -13.25], [35.18, -13.32], [35.43, -13.43], [35.3, -13.12], [35.18, -13.18], [35.15, -13.25]]]]}, "2011-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, -11.5], [33.47, -10.97], [34.0, -10.75], [34.5, -10.96], [35.0, -10.75], [35.25, -10.85], [35.5, -10.75], [35.75, -10.85], [36.0, -10.75], [36.53, -10.97], [36.75, -11.5], [36.63, -11.8], [36.75, -11.85], [37.0, -11.75], [37.53, -11.97], [37.75, -12.5], [37.53, -13.03], [37.0, -13.25], [36.75, -13.15], [36.68, -13.18], [36.53, -13.53], [36.18, -13.68], [36.03, -14.03], [35.68, -14.18], [35.53, -14.53], [35.0, -14.75], [34.47, -14.53], [34.32, -14.18], [33.97, -14.03], [33.75, -13.5], [33.85, -13.25], [33.75, -13.0], [33.85, -12.75], [33.75, -12.5], [33.85, -12.25], [33.82, -12.18], [33.47, -12.03], [33.25, -11.5]]]]}, "2011-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.85, -12.75], [33.75, -12.5], [33.85, -12.25], [33.75, -12.0], [33.85, -11.75], [33.75, -11.5], [33.97, -10.97], [34.5, -10.75], [34.75, -10.85], [35.0, -10.75], [35.53, -10.97], [35.75, -11.5], [35.53, -12.03], [35.18, -12.18], [35.15, -12.25], [35.25, -12.5], [35.15, -12.75], [35.18, -12.82], [35.25, -12.85], [35.32, -12.82], [35.47, -12.47], [35.82, -12.32], [35.97, -11.97], [36.5, -11.75], [36.75, -11.85], [37.0, -11.75], [37.53, -11.97], [37.75, -12.5], [37.53, -13.03], [37.0, -13.25], [36.75, -13.15], [36.68, -13.18], [36.53, -13.53], [36.18, -13.68], [36.03, -14.03], [35.68, -14.18], [35.53, -14.53], [35.0, -14.75], [34.47, -14.53], [34.32, -14.18], [33.97, -14.03], [33.75, -13.5], [33.85, -13.25], [33.75, -13.0], [33.85, -12.75]]]]}, "2011-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.85, -11.75], [33.75, -11.5], [33.97, -10.97], [34.5, -10.75], [34.75, -10.85], [35.0, -10.75], [35.53, -10.97], [35.75, -11.5], [35.53, -12.03], [35.18, -12.18], [35.15, -12.25], [35.25, -12.5], [35.13, -12.8], [35.25, -12.85], [35.32, -12.82], [35.47, -12.47], [36.0, -12.25], [36.53, -12.47], [36.75, -13.0], [36.53, -13.53], [36.18, -13.68], [36.03, -14.03], [35.5, -14.25], [35.25, -14.15], [35.0, -14.25], [34.47, -14.03], [34.25, -13.5], [34.38, -13.2], [33.97, -13.03], [33.75, -12.5], [33.85, -12.25], [33.75, -12.0], [33.85, -11.75]]]]}, "2011-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.97, -10.97], [34.5, -10.75], [34.75, -10.85], [35.0, -10.75], [35.53, -10.97], [35.75, -11.5], [35.53, -12.03], [35.18, -12.18], [35.03, -12.53], [34.5, -12.75], [33.97, -12.53], [33.75, -12.0], [33.85, -11.75], [33.75, -11.5], [33.97, -10.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1775206748558276}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.575773028163488}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.383658065160716, 22.49978571529971, 22.315461382898718, 22.936265603606046, 22.665814321124117, 23.704475071859804]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.430609498859383, 19.50534117307228, 19.55010199276211, 20.120851309331897, 20.365960776105396, 21.85583801605992]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4957542762339118, -1.6180079480003884, -1.6219526750320516, -1.5427979305299857, -1.5142321680387778, -1.6184657500041908]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8280777399040176, -2.0243511110347185, -2.1775206748558276, -1.7833061362146623, -1.9351307480726518, -1.9114171871557915]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5925165556095777, -1.6941635092652414, -1.721767757067462, -1.6697591624406805, -1.6377861161120002, -1.6430651788693105]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9875800544477655, -2.1440769281818777, -2.2957211241951985, -1.8266316331849641, -2.002676792499517, -1.9796445302932955]}}