{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:18.957974", "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": "2019-Mar-09_to_2019-Mar-12_44.5_-17.0"}, "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": 2019030000283}, "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 09 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 12 2019"}, "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": 94471.86897804208}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "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": ["Mozambique Channel"]}, "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": -17.0}, "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": 44.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 43.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -16.97], [43.82, -16.82], [43.97, -16.47], [44.32, -16.32], [44.35, -16.25], [44.25, -16.0], [44.47, -15.47], [45.0, -15.25], [45.53, -15.47], [45.68, -15.82], [46.03, -15.97], [46.25, -16.5], [46.15, -16.75], [46.25, -17.0], [46.15, -17.25], [46.25, -17.5], [46.03, -18.03], [45.68, -18.18], [45.65, -18.25], [45.75, -18.5], [45.53, -19.03], [45.18, -19.18], [45.03, -19.53], [44.5, -19.75], [43.97, -19.53], [43.75, -19.0], [43.88, -18.7], [43.47, -18.53], [43.25, -18.0], [43.35, -17.75], [43.25, -17.5], [43.47, -16.97]]]]}, "2019-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -16.97], [43.82, -16.82], [43.97, -16.47], [44.32, -16.32], [44.35, -16.25], [44.25, -16.0], [44.47, -15.47], [45.0, -15.25], [45.25, -15.35], [45.5, -15.25], [45.75, -15.35], [46.0, -15.25], [46.25, -15.35], [46.5, -15.25], [46.75, -15.35], [47.0, -15.25], [47.53, -15.47], [47.75, -16.0], [47.65, -16.25], [47.75, -16.5], [47.65, -16.75], [47.75, -17.0], [47.65, -17.25], [47.75, -17.5], [47.53, -18.03], [47.18, -18.18], [47.03, -18.53], [46.68, -18.68], [46.53, -19.03], [46.0, -19.25], [45.5, -19.04], [45.18, -19.18], [45.03, -19.53], [44.5, -19.75], [43.97, -19.53], [43.75, -19.0], [43.88, -18.7], [43.47, -18.53], [43.25, -18.0], [43.35, -17.75], [43.25, -17.5], [43.47, -16.97]]]]}, "2019-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -16.97], [43.82, -16.82], [43.97, -16.47], [44.32, -16.32], [44.35, -16.25], [44.25, -16.0], [44.47, -15.47], [45.0, -15.25], [45.25, -15.35], [45.5, -15.25], [45.75, -15.35], [46.0, -15.25], [46.25, -15.35], [46.5, -15.25], [46.75, -15.35], [47.0, -15.25], [47.53, -15.47], [47.75, -16.0], [47.65, -16.25], [47.75, -16.5], [47.65, -16.75], [47.75, -17.0], [47.65, -17.25], [47.75, -17.5], [47.53, -18.03], [47.18, -18.18], [47.03, -18.53], [46.68, -18.68], [46.53, -19.03], [46.0, -19.25], [45.5, -19.04], [45.18, -19.18], [45.03, -19.53], [44.5, -19.75], [43.97, -19.53], [43.75, -19.0], [43.88, -18.7], [43.47, -18.53], [43.25, -18.0], [43.35, -17.75], [43.25, -17.5], [43.47, -16.97]]]]}, "2019-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -16.97], [43.82, -16.82], [43.97, -16.47], [44.32, -16.32], [44.35, -16.25], [44.25, -16.0], [44.47, -15.47], [45.0, -15.25], [45.25, -15.35], [45.5, -15.25], [45.75, -15.35], [46.0, -15.25], [46.25, -15.35], [46.5, -15.25], [46.75, -15.35], [47.0, -15.25], [47.53, -15.47], [47.75, -16.0], [47.65, -16.25], [47.75, -16.5], [47.65, -16.75], [47.75, -17.0], [47.65, -17.25], [47.75, -17.5], [47.53, -18.03], [47.18, -18.18], [47.03, -18.53], [46.68, -18.68], [46.53, -19.03], [46.0, -19.25], [45.5, -19.04], [45.0, -19.25], [44.47, -19.03], [44.32, -18.68], [44.25, -18.65], [44.0, -18.75], [43.47, -18.53], [43.25, -18.0], [43.35, -17.75], [43.25, -17.5], [43.47, -16.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2157030891129352}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9663920710858116}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.936593918934705, 23.98301539982083, 24.053246277891674, 24.712168377182422]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.35546836885038, 21.28609570913369, 20.68311575557391, 21.296246376693603]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5798159031384633, -2.2645252856522085, -2.227147506854749, -1.5765277391012806]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.08477179152527, -2.868127614498974, -3.2157030891129352, -2.1420121596734134]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7299063523783675, -2.39495415378198, -2.4018837509458324, -1.7719362926721005]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3125828465961633, -3.153500508526631, -3.29737383830647, -2.2010377176106806]}}