{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:50.080701", "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-19_to_2013-Mar-22_37.5_5.0"}, "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": 2013030000621}, "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 19 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 64785.33545101023}, "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": ["Ethiopia", "Kenya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-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": 5.0}, "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": 37.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 5.03], [36.0, 5.25], [36.25, 5.15], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.25, 5.0], [38.15, 4.75], [38.25, 4.5], [38.15, 4.25], [38.18, 4.18], [38.53, 4.03], [38.75, 3.5], [38.53, 2.97], [38.18, 2.82], [38.15, 2.75], [38.25, 2.5], [38.03, 1.97], [37.68, 1.82], [37.53, 1.47], [37.0, 1.25], [36.5, 1.46], [36.0, 1.25], [35.75, 1.35], [35.5, 1.25], [34.97, 1.47], [34.75, 2.0], [34.97, 2.53], [35.38, 2.7], [35.25, 3.0], [35.46, 3.5], [35.25, 4.0], [35.35, 4.25], [35.25, 4.5], [35.47, 5.03]]]]}, "2013-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 5.03], [36.0, 5.25], [36.25, 5.15], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.25, 5.0], [38.15, 4.75], [38.25, 4.5], [38.15, 4.25], [38.18, 4.18], [38.53, 4.03], [38.75, 3.5], [38.53, 2.97], [38.18, 2.82], [38.15, 2.75], [38.25, 2.5], [38.03, 1.97], [37.68, 1.82], [37.53, 1.47], [37.0, 1.25], [36.5, 1.46], [36.0, 1.25], [35.75, 1.35], [35.5, 1.25], [34.97, 1.47], [34.75, 2.0], [34.97, 2.53], [35.38, 2.7], [35.25, 3.0], [35.46, 3.5], [35.25, 4.0], [35.35, 4.25], [35.25, 4.5], [35.47, 5.03]]]]}, "2013-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 5.03], [36.0, 5.25], [36.25, 5.15], [36.5, 5.25], [36.75, 5.15], [36.82, 5.18], [36.97, 5.53], [37.5, 5.75], [38.03, 5.53], [38.25, 5.0], [38.15, 4.75], [38.25, 4.5], [38.15, 4.25], [38.18, 4.18], [38.53, 4.03], [38.75, 3.5], [38.53, 2.97], [38.18, 2.82], [38.15, 2.75], [38.25, 2.5], [38.03, 1.97], [37.68, 1.82], [37.53, 1.47], [37.0, 1.25], [36.5, 1.46], [36.0, 1.25], [35.75, 1.35], [35.5, 1.25], [34.97, 1.47], [34.75, 2.0], [34.97, 2.53], [35.38, 2.7], [35.25, 3.0], [35.46, 3.5], [35.25, 4.0], [35.35, 4.25], [35.25, 4.5], [35.47, 5.03]]]]}, "2013-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.5, 5.75], [38.03, 5.53], [38.25, 5.0], [38.03, 4.47], [37.5, 4.25], [36.97, 4.47], [36.75, 5.0], [36.97, 5.53], [37.5, 5.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.337177679579781}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0286945144720185}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.96388484742863, 26.44721282118121, 26.697513472274295, 23.06674168925383]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.101456060801468, 22.529806834155522, 23.106184952869796, 23.06674168925383]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4659896797217478, -2.9743104107982496, -2.6675664734070943, -2.5712510837402647]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.337177679579781, -3.675897856290817, -3.3451608241825284, -2.5712510837402647]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1242558377439726, -1.8622794503365365, -1.6635976975290283, -1.5128491161638435]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.892398298387775, -2.3117831562454465, -2.1044372917820566, -1.5128491161638435]}}