{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:48.985710", "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-10_to_2013-Mar-13_253.5_23.5"}, "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": 2013030000371}, "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 10 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 13 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": 54242.93985080859}, "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": ["Mexico"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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 Pacific 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": 23.5}, "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": 253.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 252.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 255.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.5], [-108.03, 25.03], [-107.5, 25.25], [-106.97, 25.03], [-106.82, 24.68], [-106.47, 24.53], [-106.32, 24.18], [-105.97, 24.03], [-105.82, 23.68], [-105.47, 23.53], [-105.32, 23.18], [-104.97, 23.03], [-104.75, 22.5], [-104.85, 22.25], [-104.75, 22.0], [-104.85, 21.75], [-104.82, 21.68], [-104.47, 21.53], [-104.25, 21.0], [-104.47, 20.47], [-105.0, 20.25], [-105.53, 20.47], [-105.68, 20.82], [-105.75, 20.85], [-106.0, 20.75], [-106.5, 20.96], [-107.0, 20.75], [-107.53, 20.97], [-107.75, 21.5], [-107.65, 21.75], [-107.75, 22.0], [-107.65, 22.25], [-107.75, 22.5], [-107.65, 22.75], [-107.75, 23.0], [-107.65, 23.25], [-107.75, 23.5], [-107.65, 23.75], [-107.68, 23.82], [-108.03, 23.97], [-108.25, 24.5]]]]}, "2013-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.5], [-108.03, 25.03], [-107.5, 25.25], [-106.97, 25.03], [-106.82, 24.68], [-106.47, 24.53], [-106.32, 24.18], [-105.97, 24.03], [-105.82, 23.68], [-105.47, 23.53], [-105.32, 23.18], [-104.97, 23.03], [-104.75, 22.5], [-104.85, 22.25], [-104.75, 22.0], [-104.85, 21.75], [-104.82, 21.68], [-104.47, 21.53], [-104.25, 21.0], [-104.47, 20.47], [-105.0, 20.25], [-105.53, 20.47], [-105.68, 20.82], [-105.75, 20.85], [-106.0, 20.75], [-106.5, 20.96], [-107.0, 20.75], [-107.53, 20.97], [-107.75, 21.5], [-107.65, 21.75], [-107.75, 22.0], [-107.65, 22.25], [-107.75, 22.5], [-107.65, 22.75], [-107.75, 23.0], [-107.65, 23.25], [-107.75, 23.5], [-107.65, 23.75], [-107.68, 23.82], [-108.03, 23.97], [-108.25, 24.5]]]]}, "2013-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.5], [-108.03, 25.03], [-107.5, 25.25], [-106.97, 25.03], [-106.82, 24.68], [-106.47, 24.53], [-106.32, 24.18], [-105.97, 24.03], [-105.82, 23.68], [-105.47, 23.53], [-105.32, 23.18], [-104.97, 23.03], [-104.75, 22.5], [-104.85, 22.25], [-104.75, 22.0], [-104.85, 21.75], [-104.82, 21.68], [-104.47, 21.53], [-104.25, 21.0], [-104.47, 20.47], [-105.0, 20.25], [-105.53, 20.47], [-105.68, 20.82], [-105.75, 20.85], [-106.0, 20.75], [-106.5, 20.96], [-107.0, 20.75], [-107.53, 20.97], [-107.75, 21.5], [-107.65, 21.75], [-107.75, 22.0], [-107.65, 22.25], [-107.75, 22.5], [-107.65, 22.75], [-107.75, 23.0], [-107.65, 23.25], [-107.75, 23.5], [-107.65, 23.75], [-107.68, 23.82], [-108.03, 23.97], [-108.25, 24.5]]]]}, "2013-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.25, 24.5], [-108.03, 25.03], [-107.5, 25.25], [-106.97, 25.03], [-106.82, 24.68], [-106.47, 24.53], [-106.32, 24.18], [-105.97, 24.03], [-105.82, 23.68], [-105.47, 23.53], [-105.25, 23.0], [-105.35, 22.75], [-105.25, 22.5], [-105.47, 21.97], [-106.0, 21.75], [-106.25, 21.85], [-106.5, 21.75], [-106.75, 21.85], [-107.0, 21.75], [-107.53, 21.97], [-107.75, 22.5], [-107.65, 22.75], [-107.75, 23.0], [-107.65, 23.25], [-107.75, 23.5], [-107.65, 23.75], [-107.68, 23.82], [-108.03, 23.97], [-108.25, 24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.716799572033892}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2822702454144044}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.543265984230686, 18.90916079538931, 19.510640274268667, 19.284201772568338]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.45904532350238, 17.495188858839185, 17.717421721546714, 18.265943994555528]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1320348541351652, -2.7493784720189542, -2.1367838576597844, -1.956635995030092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.381677114368017, -3.716799572033892, -3.1361212048524862, -2.5993886328584495]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7645594702468035, -2.3112256616962044, -1.8285036082825654, -1.6881197503285694]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.42627167789966, -2.7937597144127353, -2.133259665944956, -2.141335034779058]}}