{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:59.805091", "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-Nov-16_to_2020-Nov-30_296.0_9.0"}, "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": 2020110000514}, "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": "November 16 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 30 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 15}, "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": 227228.7136563112}, "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", "Colombia", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": 9.0}, "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": 296.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 9.0], [-65.03, 9.53], [-64.68, 9.68], [-64.53, 10.03], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-62.97, 10.03], [-62.75, 9.5], [-62.85, 9.25], [-62.75, 9.0], [-62.97, 8.47], [-63.32, 8.32], [-63.47, 7.97], [-64.0, 7.75], [-64.53, 7.97], [-64.68, 8.32], [-65.03, 8.47], [-65.25, 9.0]]]]}, "2020-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 9.0], [-65.03, 9.53], [-64.68, 9.68], [-64.53, 10.03], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-62.97, 10.03], [-62.75, 9.5], [-62.85, 9.25], [-62.75, 9.0], [-62.97, 8.47], [-63.32, 8.32], [-63.47, 7.97], [-64.0, 7.75], [-64.53, 7.97], [-64.68, 8.32], [-65.03, 8.47], [-65.25, 9.0]]]]}, "2020-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 9.0], [-65.03, 9.53], [-64.68, 9.68], [-64.53, 10.03], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-62.97, 10.03], [-62.75, 9.5], [-62.85, 9.25], [-62.75, 9.0], [-62.97, 8.47], [-63.32, 8.32], [-63.47, 7.97], [-64.0, 7.75], [-64.53, 7.97], [-64.68, 8.32], [-65.03, 8.47], [-65.25, 9.0]]]]}, "2020-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.0, 9.75], [-63.47, 9.53], [-63.25, 9.0], [-63.47, 8.47], [-64.0, 8.25], [-64.53, 8.47], [-64.75, 9.0], [-64.53, 9.53], [-64.0, 9.75]]]]}, "2020-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.0, 9.75], [-63.47, 9.53], [-63.25, 9.0], [-63.47, 8.47], [-64.0, 8.25], [-64.53, 8.47], [-64.75, 9.0], [-64.53, 9.53], [-64.0, 9.75]]]]}, "2020-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.53, 10.03], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-62.97, 10.03], [-62.82, 9.68], [-62.47, 9.53], [-62.25, 9.0], [-62.47, 8.47], [-63.0, 8.25], [-63.25, 8.35], [-63.5, 8.25], [-63.75, 8.35], [-64.0, 8.25], [-64.53, 8.47], [-64.75, 9.0], [-64.65, 9.25], [-64.75, 9.5], [-64.53, 10.03]]]]}, "2020-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.53, 10.03], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-62.97, 10.03], [-62.82, 9.68], [-62.47, 9.53], [-62.25, 9.0], [-62.47, 8.47], [-63.0, 8.25], [-63.25, 8.35], [-63.5, 8.25], [-63.75, 8.35], [-64.0, 8.25], [-64.53, 8.47], [-64.75, 9.0], [-64.65, 9.25], [-64.75, 9.5], [-64.53, 10.03]]]]}, "2020-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.53, 10.03], [-64.0, 10.25], [-63.75, 10.15], [-63.5, 10.25], [-62.97, 10.03], [-62.82, 9.68], [-62.47, 9.53], [-62.25, 9.0], [-62.47, 8.47], [-63.0, 8.25], [-63.25, 8.35], [-63.5, 8.25], [-63.75, 8.35], [-64.0, 8.25], [-64.53, 8.47], [-64.75, 9.0], [-64.65, 9.25], [-64.75, 9.5], [-64.53, 10.03]]]]}, "2020-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, 4.97], [-66.75, 5.5], [-66.53, 6.03], [-66.0, 6.25], [-65.47, 6.03], [-65.25, 5.5], [-65.47, 4.97], [-66.0, 4.75], [-66.53, 4.97]]], [[[-64.53, 8.47], [-64.75, 9.0], [-64.53, 9.53], [-64.0, 9.75], [-63.47, 9.53], [-63.25, 9.0], [-63.47, 8.47], [-64.0, 8.25], [-64.53, 8.47]]]]}, "2020-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, 4.5], [-68.03, 5.03], [-67.68, 5.18], [-67.53, 5.53], [-67.18, 5.68], [-67.03, 6.03], [-66.68, 6.18], [-66.53, 6.53], [-66.18, 6.68], [-66.15, 6.75], [-66.18, 6.82], [-66.25, 6.85], [-66.5, 6.75], [-67.03, 6.97], [-67.25, 7.5], [-67.15, 7.75], [-67.25, 8.0], [-67.03, 8.53], [-66.68, 8.68], [-66.53, 9.03], [-66.18, 9.18], [-66.03, 9.53], [-65.5, 9.75], [-65.0, 9.54], [-64.5, 9.75], [-64.25, 9.65], [-64.0, 9.75], [-63.47, 9.53], [-63.32, 9.18], [-62.97, 9.03], [-62.75, 8.5], [-62.97, 7.97], [-63.32, 7.82], [-63.46, 7.5], [-63.25, 7.0], [-63.47, 6.47], [-63.82, 6.32], [-63.85, 6.25], [-63.75, 6.0], [-63.97, 5.47], [-64.32, 5.32], [-64.35, 5.25], [-64.25, 5.0], [-64.35, 4.75], [-64.32, 4.68], [-63.97, 4.53], [-63.75, 4.0], [-63.85, 3.75], [-63.75, 3.5], [-63.85, 3.25], [-63.75, 3.0], [-63.97, 2.47], [-64.5, 2.25], [-65.03, 2.47], [-65.18, 2.82], [-65.25, 2.85], [-65.5, 2.75], [-66.03, 2.97], [-66.18, 3.32], [-66.25, 3.35], [-66.5, 3.25], [-66.75, 3.35], [-67.0, 3.25], [-67.53, 3.47], [-67.68, 3.82], [-68.03, 3.97], [-68.25, 4.5]]]]}, "2020-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, 4.5], [-68.03, 5.03], [-67.68, 5.18], [-67.53, 5.53], [-67.18, 5.68], [-67.03, 6.03], [-66.68, 6.18], [-66.53, 6.53], [-66.18, 6.68], [-66.15, 6.75], [-66.18, 6.82], [-66.25, 6.85], [-66.5, 6.75], [-67.03, 6.97], [-67.25, 7.5], [-67.15, 7.75], [-67.25, 8.0], [-67.03, 8.53], [-66.68, 8.68], [-66.53, 9.03], [-66.18, 9.18], [-66.03, 9.53], [-65.5, 9.75], [-65.0, 9.54], [-64.5, 9.75], [-64.25, 9.65], [-64.0, 9.75], [-63.47, 9.53], [-63.32, 9.18], [-62.97, 9.03], [-62.75, 8.5], [-62.96, 8.0], [-62.75, 7.5], [-62.85, 7.25], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.32, 5.82], [-63.47, 5.47], [-64.0, 5.25], [-64.25, 5.35], [-64.32, 5.32], [-64.35, 5.25], [-64.25, 5.0], [-64.35, 4.75], [-64.32, 4.68], [-63.97, 4.53], [-63.75, 4.0], [-63.85, 3.75], [-63.75, 3.5], [-63.85, 3.25], [-63.75, 3.0], [-63.97, 2.47], [-64.5, 2.25], [-65.03, 2.47], [-65.18, 2.82], [-65.25, 2.85], [-65.5, 2.75], [-66.03, 2.97], [-66.18, 3.32], [-66.25, 3.35], [-66.5, 3.25], [-66.75, 3.35], [-67.0, 3.25], [-67.53, 3.47], [-67.68, 3.82], [-68.03, 3.97], [-68.25, 4.5]]]]}, "2020-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.75, 6.0], [-69.53, 6.53], [-69.0, 6.75], [-68.75, 6.65], [-68.5, 6.75], [-68.25, 6.65], [-68.0, 6.75], [-67.5, 6.54], [-67.0, 6.75], [-66.5, 6.54], [-66.18, 6.68], [-66.15, 6.75], [-66.18, 6.82], [-66.25, 6.85], [-66.5, 6.75], [-67.03, 6.97], [-67.25, 7.5], [-67.15, 7.75], [-67.25, 8.0], [-67.03, 8.53], [-66.68, 8.68], [-66.53, 9.03], [-66.18, 9.18], [-66.03, 9.53], [-65.5, 9.75], [-65.0, 9.54], [-64.5, 9.75], [-64.25, 9.65], [-64.0, 9.75], [-63.47, 9.53], [-63.32, 9.18], [-62.97, 9.03], [-62.75, 8.5], [-62.96, 8.0], [-62.75, 7.5], [-62.85, 7.25], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.32, 5.82], [-63.47, 5.47], [-64.0, 5.25], [-64.25, 5.35], [-64.32, 5.32], [-64.35, 5.25], [-64.25, 5.0], [-64.35, 4.75], [-64.32, 4.68], [-63.97, 4.53], [-63.75, 4.0], [-63.85, 3.75], [-63.75, 3.5], [-63.85, 3.25], [-63.75, 3.0], [-63.97, 2.47], [-64.5, 2.25], [-65.03, 2.47], [-65.18, 2.82], [-65.25, 2.85], [-65.5, 2.75], [-66.03, 2.97], [-66.18, 3.32], [-66.25, 3.35], [-66.5, 3.25], [-66.75, 3.35], [-67.0, 3.25], [-67.53, 3.47], [-67.68, 3.82], [-68.03, 3.97], [-68.25, 4.5], [-68.15, 4.75], [-68.2, 4.88], [-68.5, 4.75], [-69.03, 4.97], [-69.18, 5.32], [-69.53, 5.47], [-69.75, 6.0]]]]}, "2020-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.75, 6.0], [-69.53, 6.53], [-69.0, 6.75], [-68.75, 6.65], [-68.5, 6.75], [-68.25, 6.65], [-68.0, 6.75], [-67.5, 6.54], [-67.0, 6.75], [-66.47, 6.53], [-66.3, 6.12], [-66.0, 6.25], [-65.57, 6.07], [-65.68, 6.32], [-66.03, 6.47], [-66.25, 7.0], [-66.12, 7.3], [-66.53, 7.47], [-66.75, 8.0], [-66.53, 8.53], [-66.0, 8.75], [-65.75, 8.65], [-65.68, 8.68], [-65.53, 9.03], [-65.18, 9.18], [-65.03, 9.53], [-64.5, 9.75], [-63.97, 9.53], [-63.82, 9.18], [-63.47, 9.03], [-63.25, 8.5], [-63.37, 8.2], [-62.97, 8.03], [-62.75, 7.5], [-62.85, 7.25], [-62.82, 7.18], [-62.47, 7.03], [-62.25, 6.5], [-62.47, 5.97], [-63.0, 5.75], [-63.25, 5.85], [-63.32, 5.82], [-63.47, 5.47], [-64.0, 5.25], [-64.53, 5.47], [-64.68, 5.82], [-64.75, 5.85], [-65.0, 5.75], [-65.43, 5.93], [-65.32, 5.68], [-64.97, 5.53], [-64.82, 5.18], [-64.47, 5.03], [-64.25, 4.5], [-64.37, 4.2], [-63.97, 4.03], [-63.75, 3.5], [-63.85, 3.25], [-63.75, 3.0], [-63.97, 2.47], [-64.5, 2.25], [-65.03, 2.47], [-65.18, 2.82], [-65.53, 2.97], [-65.68, 3.32], [-66.03, 3.47], [-66.18, 3.82], [-66.25, 3.85], [-66.5, 3.75], [-66.75, 3.85], [-67.0, 3.75], [-67.25, 3.85], [-67.5, 3.75], [-68.03, 3.97], [-68.25, 4.5], [-68.15, 4.75], [-68.2, 4.88], [-68.5, 4.75], [-69.03, 4.97], [-69.18, 5.32], [-69.53, 5.47], [-69.75, 6.0]]]]}, "2020-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.75, 6.0], [-69.53, 6.53], [-69.0, 6.75], [-68.75, 6.65], [-68.5, 6.75], [-68.25, 6.65], [-68.0, 6.75], [-67.5, 6.54], [-67.0, 6.75], [-66.47, 6.53], [-66.3, 6.12], [-66.0, 6.25], [-65.57, 6.07], [-65.75, 6.5], [-65.65, 6.75], [-65.75, 7.0], [-65.65, 7.25], [-65.7, 7.38], [-66.0, 7.25], [-66.53, 7.47], [-66.75, 8.0], [-66.53, 8.53], [-66.0, 8.75], [-65.47, 8.53], [-65.3, 8.12], [-65.0, 8.25], [-64.75, 8.15], [-64.5, 8.25], [-64.25, 8.15], [-64.0, 8.25], [-63.47, 8.03], [-63.25, 7.5], [-63.35, 7.25], [-63.32, 7.18], [-62.97, 7.03], [-62.75, 6.5], [-62.97, 5.97], [-63.32, 5.82], [-63.47, 5.47], [-64.0, 5.25], [-64.53, 5.47], [-64.68, 5.82], [-64.75, 5.85], [-65.0, 5.75], [-65.43, 5.93], [-65.32, 5.68], [-64.97, 5.53], [-64.82, 5.18], [-64.47, 5.03], [-64.25, 4.5], [-64.46, 4.0], [-64.32, 3.68], [-63.97, 3.53], [-63.75, 3.0], [-63.97, 2.47], [-64.5, 2.25], [-65.03, 2.47], [-65.18, 2.82], [-65.53, 2.97], [-65.75, 3.5], [-65.62, 3.8], [-65.75, 3.85], [-66.0, 3.75], [-66.25, 3.85], [-66.5, 3.75], [-67.03, 3.97], [-67.2, 4.38], [-67.5, 4.25], [-68.03, 4.47], [-68.2, 4.88], [-68.5, 4.75], [-69.03, 4.97], [-69.18, 5.32], [-69.53, 5.47], [-69.75, 6.0]]]]}, "2020-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.5, 5.75], [-66.97, 5.53], [-66.75, 5.0], [-66.97, 4.47], [-67.5, 4.25], [-68.03, 4.47], [-68.25, 5.0], [-68.03, 5.53], [-67.5, 5.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.740874806516331}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4676423710967101}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.67605209040005, 25.387238979251833, 25.40197961575018, 25.68418640505314, 25.70434242782602, 25.57778417647546, 24.53692446402556, 25.514835366892385, 24.880979009270504, 23.653925202111168, 23.736098297370688, 23.505543764100878, 24.222769142751076, 24.32829662754699, 24.290994021617337]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.409282522551962, 25.199161041003094, 25.001712911565676, 25.68418640505314, 25.70434242782602, 25.33978132028159, 24.420693646416794, 25.271897992748734, 24.101904911657527, 19.12633339043947, 18.949108695222264, 19.25872947313502, 20.331313012731812, 21.369651537048924, 24.290994021617337]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3084205940685745, -1.5770335865223046, -1.5323237009426596, -1.1429839588075765, -1.105290439188252, -1.1599878331828903, -2.169402039990223, -1.1545005778947597, -1.1024491818803597, -1.4615015603623989, -1.4537365987742201, -1.776067273029328, -1.2689312862270805, -1.1157110151327498, -0.8112596929228175]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5087769979894574, -1.7308585514159063, -1.649080227840841, -1.1429839588075765, -1.105290439188252, -1.211538884005563, -2.3829718825714963, -1.254040939676031, -1.1374170803798052, -2.277456048087288, -2.313903930702452, -2.740874806516331, -1.8582324695278203, -1.4230295172745855, -0.8112596929228175]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3443098889818828, -1.6307102765553714, -1.5821657653959156, -1.184613461305899, -1.1628904613043536, -1.2884475252250212, -2.4372178968852003, -1.2927380299003535, -1.2424310979214244, -1.7471394997343115, -1.763279338591138, -2.1822935357617927, -1.5547033189882367, -1.4018974054636348, -1.2819865721689159]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5301240629683412, -1.8048080766428007, -1.7717412953478742, -1.184613461305899, -1.1628904613043536, -1.369540652053448, -2.6329158738478435, -1.3489055263288414, -1.3183368219268203, -2.742056264630477, -2.5804742854023948, -3.2729611019416973, -2.233201817382731, -1.8121921968882693, -1.2819865721689159]}}