{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:57.746252", "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": "2020-Jun-11_to_2020-Jun-16_260.0_21.0"}, "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": 2020060000381}, "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": "June 11 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 16 2020"}, "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": 63540.31866760024}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": []}, "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": 21.0}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 259.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-98.677, 19.823], [-98.749, 19.854], [-98.75, 19.854], [-98.823, 19.823], [-98.97, 19.47], [-99.5, 19.25], [-100.03, 19.47], [-100.177, 19.823], [-100.53, 19.97], [-100.677, 20.323], [-101.03, 20.47], [-101.177, 20.823], [-101.53, 20.97], [-101.75, 21.5], [-101.646, 21.75], [-101.75, 22.0], [-101.53, 22.53], [-101.0, 22.75], [-100.75, 22.646], [-100.5, 22.75], [-100.25, 22.646], [-100.0, 22.75], [-99.47, 22.53], [-99.323, 22.177], [-98.97, 22.03], [-98.823, 21.677], [-98.5, 21.543], [-98.0, 21.75], [-97.75, 21.646], [-97.5, 21.75], [-96.97, 21.53], [-96.823, 21.177], [-96.47, 21.03], [-96.25, 20.5], [-96.354, 20.25], [-96.25, 20.0], [-96.47, 19.47], [-96.823, 19.323], [-96.97, 18.97], [-97.5, 18.75], [-98.03, 18.97], [-98.177, 19.323], [-98.53, 19.47], [-98.677, 19.823]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "S.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.53033008588989, 20.46966991411009], [-98.75, 21.0], [-98.53033008588989, 21.53033008588991], [-98.0, 21.75], [-97.46966991411011, 21.53033008588991], [-97.32322330470339, 21.17677669529664], [-97.25, 21.146446609406723], [-97.0, 21.25], [-96.46966991411011, 21.03033008588991], [-96.25, 20.5], [-96.46966991411011, 19.96966991411009], [-97.0, 19.75], [-97.25, 19.853553390593277], [-97.5, 19.75], [-98.03033008588989, 19.96966991411009], [-98.17677669529661, 20.32322330470336], [-98.53033008588989, 20.46966991411009]]], [[[-98.96966991411011, 20.96966991411009], [-99.5, 20.75], [-100.03033008588989, 20.96966991411009], [-100.25, 21.5], [-100.03033008588989, 22.03033008588991], [-99.5, 22.25], [-98.96966991411011, 22.03033008588991], [-98.75, 21.5], [-98.96966991411011, 20.96966991411009]]]]}, "2020-06-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-101.64644660940672, 21.75], [-101.75, 22.0], [-101.53033008588989, 22.53033008588991], [-101.0, 22.75], [-100.75, 22.646446609406723], [-100.5, 22.75], [-100.25, 22.646446609406723], [-100.0, 22.75], [-99.46966991411011, 22.53033008588991], [-99.32322330470339, 22.17677669529664], [-98.96966991411011, 22.03033008588991], [-98.82322330470339, 21.67677669529664], [-98.5, 21.542893218813443], [-98.0, 21.75], [-97.75, 21.646446609406723], [-97.5, 21.75], [-96.96966991411011, 21.53033008588991], [-96.82322330470339, 21.17677669529664], [-96.46966991411011, 21.03033008588991], [-96.25, 20.5], [-96.46966991411011, 19.96966991411009], [-96.875, 19.801776695296635], [-96.75, 19.5], [-96.96966991411011, 18.96966991411009], [-97.5, 18.75], [-98.03033008588989, 18.96966991411009], [-98.25, 19.5], [-98.04289321881345, 20.0], [-98.17677669529661, 20.32322330470336], [-98.30177669529667, 20.375000000000007], [-98.46966991411011, 19.96966991411009], [-98.82322330470339, 19.82322330470336], [-98.96966991411011, 19.46966991411009], [-99.5, 19.25], [-100.03033008588989, 19.46966991411009], [-100.17677669529661, 19.82322330470336], [-100.53033008588989, 19.96966991411009], [-100.67677669529661, 20.32322330470336], [-101.03033008588989, 20.46966991411009], [-101.17677669529661, 20.82322330470336], [-101.53033008588989, 20.96966991411009], [-101.75, 21.5], [-101.64644660940672, 21.75]]]}, "2020-06-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-101.64644660940672, 21.75], [-101.75, 22.0], [-101.53033008588989, 22.53033008588991], [-101.0, 22.75], [-100.75, 22.646446609406723], [-100.5, 22.75], [-100.25, 22.646446609406723], [-100.0, 22.75], [-99.46966991411011, 22.53033008588991], [-99.32322330470339, 22.17677669529664], [-98.96966991411011, 22.03033008588991], [-98.82322330470339, 21.67677669529664], [-98.5, 21.542893218813443], [-98.0, 21.75], [-97.75, 21.646446609406723], [-97.5, 21.75], [-96.96966991411011, 21.53033008588991], [-96.82322330470339, 21.17677669529664], [-96.46966991411011, 21.03033008588991], [-96.25, 20.5], [-96.35355339059328, 20.25], [-96.25, 20.0], [-96.46966991411011, 19.46966991411009], [-96.82322330470339, 19.32322330470336], [-96.96966991411011, 18.96966991411009], [-97.5, 18.75], [-98.03033008588989, 18.96966991411009], [-98.17677669529661, 19.32322330470336], [-98.53033008588989, 19.46966991411009], [-98.67677669529661, 19.82322330470336], [-98.75, 19.853553390593277], [-98.82322330470339, 19.82322330470336], [-98.96966991411011, 19.46966991411009], [-99.5, 19.25], [-100.03033008588989, 19.46966991411009], [-100.17677669529661, 19.82322330470336], [-100.53033008588989, 19.96966991411009], [-100.67677669529661, 20.32322330470336], [-101.03033008588989, 20.46966991411009], [-101.17677669529661, 20.82322330470336], [-101.53033008588989, 20.96966991411009], [-101.75, 21.5], [-101.64644660940672, 21.75]]]}, "2020-06-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-101.64644660940672, 21.75], [-101.75, 22.0], [-101.53033008588989, 22.53033008588991], [-101.0, 22.75], [-100.75, 22.646446609406723], [-100.5, 22.75], [-100.25, 22.646446609406723], [-100.0, 22.75], [-99.46966991411011, 22.53033008588991], [-99.32322330470339, 22.17677669529664], [-98.96966991411011, 22.03033008588991], [-98.82322330470339, 21.67677669529664], [-98.46966991411011, 21.53033008588991], [-98.32322330470339, 21.17677669529664], [-98.19822330470333, 21.124999999999993], [-98.03033008588989, 21.53033008588991], [-97.5, 21.75], [-96.96966991411011, 21.53033008588991], [-96.75, 21.0], [-96.875, 20.698223304703365], [-96.46966991411011, 20.53033008588991], [-96.25, 20.0], [-96.46966991411011, 19.46966991411009], [-96.82322330470339, 19.32322330470336], [-96.96966991411011, 18.96966991411009], [-97.5, 18.75], [-98.03033008588989, 18.96966991411009], [-98.17677669529661, 19.32322330470336], [-98.53033008588989, 19.46966991411009], [-98.67677669529661, 19.82322330470336], [-98.75, 19.853553390593277], [-98.82322330470339, 19.82322330470336], [-98.96966991411011, 19.46966991411009], [-99.5, 19.25], [-100.03033008588989, 19.46966991411009], [-100.17677669529661, 19.82322330470336], [-100.53033008588989, 19.96966991411009], [-100.67677669529661, 20.32322330470336], [-101.03033008588989, 20.46966991411009], [-101.17677669529661, 20.82322330470336], [-101.53033008588989, 20.96966991411009], [-101.75, 21.5], [-101.64644660940672, 21.75]]]}, "2020-06-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-99.75, 20.353553390593277], [-100.0, 20.25], [-100.53033008588989, 20.46966991411009], [-100.75, 21.0], [-100.53033008588989, 21.53033008588991], [-100.0, 21.75], [-99.75, 21.646446609406723], [-99.5, 21.75], [-98.96966991411011, 21.53033008588991], [-98.82322330470339, 21.17677669529664], [-98.75, 21.146446609406723], [-98.5, 21.25], [-97.96966991411011, 21.03033008588991], [-97.82322330470339, 20.67677669529664], [-97.5, 20.542893218813443], [-97.0, 20.75], [-96.46966991411011, 20.53033008588991], [-96.25, 20.0], [-96.46966991411011, 19.46966991411009], [-97.0, 19.25], [-97.5, 19.457106781186557], [-98.0, 19.25], [-98.53033008588989, 19.46966991411009], [-98.67677669529661, 19.82322330470336], [-98.75, 19.853553390593277], [-99.0, 19.75], [-99.53033008588989, 19.96966991411009], [-99.67677669529661, 20.32322330470336], [-99.75, 20.353553390593277]]]}, "2020-06-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-98.75, 20.0], [-98.53033008588989, 20.53033008588991], [-98.0, 20.75], [-97.46966991411011, 20.53033008588991], [-97.25, 20.0], [-97.46966991411011, 19.46966991411009], [-98.0, 19.25], [-98.53033008588989, 19.46966991411009], [-98.75, 20.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.248960184888915}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.305979677203962}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.942717309474233, 19.568914111310846, 19.499722706685304, 18.44293733507476, 18.52616437125056, 15.551366171636687]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.625554264586697, 14.209133478956062, 13.562634148326367, 13.754243313234667, 15.270409346428039, 15.551366171636687]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.888738799350179, -2.4679872265789893, -2.317715409192648, -2.376283938300548, -1.9423385411334664, -1.484679502330323]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2758727367660185, -3.127633434959421, -3.248960184888915, -3.1381348025243483, -2.247649190091863, -1.484679502330323]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4644607610202516, -1.686153754048533, -1.627378648014706, -1.6376991309717228, -1.5055037285466863, -1.4483850849516162]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5708157300835635, -1.9901830528215754, -1.959235881988773, -1.934134557881644, -1.724878780429858, -1.4483850849516162]}}