{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:47.557597", "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-Dec-07_to_2020-Dec-10_314.5_-3.5"}, "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": 2020120000325}, "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": "December 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2020"}, "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": 64786.15201420903}, "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": ["Brazil"]}, "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": -3.5}, "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": 314.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "314.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 317.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-47.5, -2.25], [-47.0, -2.457], [-46.5, -2.25], [-45.97, -2.47], [-45.823, -2.823], [-45.75, -2.854], [-45.677, -2.823], [-45.53, -2.47], [-45.0, -2.25], [-44.75, -2.354], [-44.5, -2.25], [-44.25, -2.354], [-44.0, -2.25], [-43.75, -2.354], [-43.5, -2.25], [-42.97, -2.47], [-42.823, -2.823], [-42.47, -2.97], [-42.25, -3.5], [-42.47, -4.03], [-43.0, -4.25], [-43.25, -4.146], [-43.5, -4.25], [-43.75, -4.146], [-44.0, -4.25], [-44.25, -4.146], [-44.5, -4.25], [-44.802, -4.125], [-44.97, -4.53], [-45.5, -4.75], [-45.75, -4.646], [-45.823, -4.677], [-45.97, -5.03], [-46.5, -5.25], [-46.75, -5.146], [-47.0, -5.25], [-47.53, -5.03], [-47.75, -4.5], [-47.646, -4.25], [-47.677, -4.177], [-48.03, -4.03], [-48.25, -3.5], [-48.146, -3.25], [-48.25, -3.0], [-48.03, -2.47], [-47.5, -2.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-45.17677669529661, -3.676776695296637], [-45.53033008588989, -3.5303300858899105], [-45.75, -3.0], [-45.53033008588989, -2.4696699141100895], [-45.0, -2.25], [-44.75, -2.3535533905932784], [-44.5, -2.25], [-44.25, -2.3535533905932784], [-44.0, -2.25], [-43.75, -2.3535533905932784], [-43.5, -2.25], [-42.96966991411011, -2.4696699141100895], [-42.82322330470339, -2.823223304703363], [-42.46966991411011, -2.9696699141100895], [-42.25, -3.5], [-42.46966991411011, -4.0303300858899105], [-43.0, -4.25], [-43.25, -4.146446609406722], [-43.5, -4.25], [-43.75, -4.146446609406722], [-44.0, -4.25], [-44.25, -4.146446609406722], [-44.5, -4.25], [-45.03033008588989, -4.0303300858899105], [-45.17677669529661, -3.676776695296637]]]}, "2020-12-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-48.14644660940672, -3.25], [-48.25, -3.0], [-48.03033008588989, -2.4696699141100895], [-47.5, -2.25], [-47.0, -2.4571067811865572], [-46.5, -2.25], [-45.96966991411011, -2.4696699141100895], [-45.82322330470339, -2.823223304703363], [-45.75, -2.8535533905932784], [-45.67677669529661, -2.823223304703363], [-45.53033008588989, -2.4696699141100895], [-45.0, -2.25], [-44.75, -2.3535533905932784], [-44.5, -2.25], [-44.25, -2.3535533905932784], [-44.0, -2.25], [-43.75, -2.3535533905932784], [-43.5, -2.25], [-42.96966991411011, -2.4696699141100895], [-42.82322330470339, -2.823223304703363], [-42.46966991411011, -2.9696699141100895], [-42.25, -3.5], [-42.46966991411011, -4.0303300858899105], [-43.0, -4.25], [-43.25, -4.146446609406722], [-43.5, -4.25], [-43.75, -4.146446609406722], [-44.0, -4.25], [-44.25, -4.146446609406722], [-44.5, -4.25], [-44.80177669529667, -4.124999999999993], [-44.96966991411011, -4.5303300858899105], [-45.5, -4.75], [-45.75, -4.646446609406722], [-45.82322330470339, -4.6767766952966365], [-45.96966991411011, -5.0303300858899105], [-46.5, -5.25], [-46.75, -5.146446609406722], [-47.0, -5.25], [-47.53033008588989, -5.0303300858899105], [-47.75, -4.5], [-47.64644660940672, -4.25], [-47.67677669529661, -4.1767766952966365], [-48.03033008588989, -4.0303300858899105], [-48.25, -3.5], [-48.14644660940672, -3.25]]]}, "2020-12-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-48.14644660940672, -3.25], [-48.25, -3.0], [-48.03033008588989, -2.4696699141100895], [-47.5, -2.25], [-47.0, -2.4571067811865572], [-46.5, -2.25], [-45.96966991411011, -2.4696699141100895], [-45.82322330470339, -2.823223304703363], [-45.75, -2.8535533905932784], [-45.67677669529661, -2.823223304703363], [-45.53033008588989, -2.4696699141100895], [-45.0, -2.25], [-44.75, -2.3535533905932784], [-44.5, -2.25], [-44.25, -2.3535533905932784], [-44.0, -2.25], [-43.75, -2.3535533905932784], [-43.5, -2.25], [-42.96966991411011, -2.4696699141100895], [-42.82322330470339, -2.823223304703363], [-42.46966991411011, -2.9696699141100895], [-42.25, -3.5], [-42.46966991411011, -4.0303300858899105], [-43.0, -4.25], [-43.25, -4.146446609406722], [-43.5, -4.25], [-43.75, -4.146446609406722], [-44.0, -4.25], [-44.25, -4.146446609406722], [-44.5, -4.25], [-44.80177669529667, -4.124999999999993], [-44.96966991411011, -4.5303300858899105], [-45.5, -4.75], [-45.75, -4.646446609406722], [-45.82322330470339, -4.6767766952966365], [-45.96966991411011, -5.0303300858899105], [-46.5, -5.25], [-46.75, -5.146446609406722], [-47.0, -5.25], [-47.53033008588989, -5.0303300858899105], [-47.75, -4.5], [-47.64644660940672, -4.25], [-47.67677669529661, -4.1767766952966365], [-48.03033008588989, -4.0303300858899105], [-48.25, -3.5], [-48.14644660940672, -3.25]]]}, "2020-12-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-48.14644660940672, -3.25], [-48.25, -3.0], [-48.03033008588989, -2.4696699141100895], [-47.5, -2.25], [-47.0, -2.4571067811865572], [-46.5, -2.25], [-45.96966991411011, -2.4696699141100895], [-45.82322330470339, -2.823223304703363], [-45.75, -2.8535533905932784], [-45.5, -2.75], [-44.96966991411011, -2.9696699141100895], [-44.75, -3.5], [-44.85355339059328, -3.75], [-44.75, -4.0], [-44.96966991411011, -4.5303300858899105], [-45.5, -4.75], [-45.75, -4.646446609406722], [-45.82322330470339, -4.6767766952966365], [-45.96966991411011, -5.0303300858899105], [-46.5, -5.25], [-46.75, -5.146446609406722], [-47.0, -5.25], [-47.53033008588989, -5.0303300858899105], [-47.75, -4.5], [-47.64644660940672, -4.25], [-47.67677669529661, -4.1767766952966365], [-48.03033008588989, -4.0303300858899105], [-48.25, -3.5], [-48.14644660940672, -3.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6411899202278164}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5818969918422008}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.647124234342584, 26.871816002937294, 26.38910160880124, 26.164993779120323]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.300141603511065, 25.699821242491396, 24.962689882182985, 25.428225535189142]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2646327407826021, -1.4320163721296861, -1.8482618078426754, -1.5889697523367876]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6900286050104114, -1.8146681833744651, -2.6411899202278164, -1.8522411203189222]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4278427613416131, -1.5805135255070697, -2.0364964673294916, -1.6284826624652256]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5598257467432217, -1.9029902445417057, -2.925692100201651, -1.8344750671700196]}}