{ "created_at": "2026-07-24T15:20:55.482755+00:00", "elapsed": 0.181954, "encoding": "utf-8", "expires": "2026-07-24T15:20:55.482720+00:00", "headers": { "Accept-Ranges": "bytes", "Access-Control-Allow-Headers": "Content-Type", "Access-Control-Allow-Methods": "GET", "Access-Control-Allow-Origin": "*", "Connection": "Keep-Alive", "Content-Length": "12107", "Content-Security-Policy": "frame-ancestors 'self' *.gsfc.nasa.gov;", "Content-Type": "application/json", "Date": "Fri, 24 Jul 2026 15:20:55 GMT", "ETag": "\"2f4b-6575b2817f168\"", "Keep-Alive": "timeout=2, max=40", "Last-Modified": "Fri, 24 Jul 2026 13:14:46 GMT", "Server": "Apache", "Strict-Transport-Security": "max-age=63072000; includeSubdomains; preload" }, "reason": "OK", "request": { "body": "", "headers": { "Accept": "*/*", "Accept-Encoding": "gzip, deflate", "Connection": "keep-alive", "If-Modified-Since": "Thu, 23 Jul 2026 13:11:46 GMT", "If-None-Match": "\"2f4b-65746ff8147d1\"", "User-Agent": "python-requests/2.25.1" }, "method": "GET", "url": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/wi_l2_wav_tnr_00000000_v01.json?https" }, "status_code": 200, "url": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/wi_l2_wav_tnr_00000000_v01.json?https", "_decoded_content": { "wi_l2_wav_tnr_00000000_v01.cdf": { "CDFFileInfo": [ { "FileVersion": "3.9.0" }, { "Format": "SINGLE" }, { "Majority": "COLUMN" }, { "Encoding": "IBMPC" } ], "CDFglobalAttributes": [ { "Project": [ { "0": "ISTP>International Solar-Terrestrial Physics" } ] }, { "Source_name": [ { "0": "WIND>Wind Interplanetary Plasma Laboratory" } ] }, { "Discipline": [ { "0": "Solar Physics>Heliospheric Physics" }, { "1": "Space Physics>Interplanetary Studies" } ] }, { "Instrument_type": [ { "0": "Radio and Plasma Waves (space)" }, { "1": "Electric Fields (space)" } ] }, { "Mission_group": [ { "0": "Wind" } ] }, { "Data_type": [ { "0": "L2>Level 2" } ] }, { "Descriptor": [ { "0": "wav_tnr" } ] }, { "Data_version": [ { "0": " " } ] }, { "Logical_file_id": [ { "0": "wi_l2_wav_tnr" } ] }, { "Logical_source": [ { "0": "WI_L2_WAV_TNR" } ] }, { "Logical_source_description": [ { "0": "Wind/WAVES/Thermal Noise Receiver(TNR) Data" } ] }, { "File_naming_convention": [ { "0": "source_datatype_descriptor_yyyyMMdd" } ] }, { "PI_name": [ { "0": "Karine Issautier (Karine.Issautier@obspm.fr) & Keith Goetz (goetz@umn.edu)" } ] }, { "PI_affiliation": [ { "0": "LIRA, Observatoire de Paris-PSL, CNRS & University of Minnesota" } ] }, { "TEXT": [ { "0": "This file includes radio measurements recorded by the Wind/WAVES/TNR instrument" } ] }, { "Acknowledgement": [ { "0": "Please acknowledge the Principal Investigators, Dr. Karine Issautier (LIRA, Observatoire de Paris-PSL, CNRS) and Keith Goetz (University of Minnesota)" } ] }, { "Rules_of_use": [ { "0": "Data provided are publicly available. If used in presentations or publications, please acknowledge Wind/Waves Investigation (Karine Issautier, PI). Please read carefully the caveats attached to the data. For reporting purposes, we request bibliography information for any publication, etc., using these data. Please send information on the use of this data to: Karine Issautier (PI)." } ] }, { "Generated_by": [ { "0": "NASA/GSFC" } ] }, { "Generation_date": [ { "0": " " } ] }, { "Parents": [ { "0": " " } ] }, { "MODS": [ { "0": "2025-09-09: Coded by Vratislav Krupar (vratislav.krupar@nasa.gov)" }, { "1": "2025-11-14: Updated for ISTP: MODE/ANT FORMAT & FORM_PTR; FREQ_LABEL in Hz; Parents attribute." } ] } ], "CDFVariables": [ { "FREQ_FORMAT": [ { "VarDescription": [ { "DataType": "CDF_CHAR" }, { "NumElements": 7 }, { "NumDims": 0 }, { "RecVariance": "NOVARY" }, { "Compression": "GZIP.6" }, { "NumWrittenRecords": 1 }, { "PadValue": " " }, { "BlockingFactor": 1 } ] }, { "VarAttributes": [ { "VAR_TYPE": "metadata" }, { "FIELDNAM": "Frequency label format" }, { "CATDESC": "printf-style format for frequency labels" }, { "FORMAT": "A7" } ] }, { "VarData": [ "%.0f Hz" ] } ] }, { "FREQ_LABEL": [ { "VarDescription": [ { "DataType": "CDF_CHAR" }, { "NumElements": 9 }, { "NumDims": 1 }, { "DimSizes": [ 96 ] }, { "RecVariance": "NOVARY" }, { "DimVariances": [ "VARY" ] }, { "Compression": "GZIP.6" }, { "NumWrittenRecords": 1 }, { "PadValue": " " }, { "BlockingFactor": 1 } ] }, { "VarAttributes": [ { "VAR_TYPE": "metadata" }, { "FIELDNAM": "Frequency labels" }, { "CATDESC": "Labels for frequency dimension (one per bin)." }, { "FORMAT": "A9" }, { "FORM_PTR": "FREQ_FORMAT" } ] }, { "VarData": [ "4088 Hz", "4269 Hz", "4458 Hz", "4655 Hz", "4861 Hz", "5076 Hz", "5301 Hz", "5536 Hz", "5781 Hz", "6037 Hz", "6304 Hz", "6583 Hz", "6874 Hz", "7179 Hz", "7497 Hz", "7829 Hz", "8175 Hz", "8537 Hz", "8915 Hz", "9310 Hz", "9722 Hz", "10152 Hz", "10602 Hz", "11071 Hz", "11561 Hz", "12073 Hz", "12608 Hz", "13166 Hz", "13749 Hz", "14358 Hz", "14993 Hz", "15657 Hz", "16350 Hz", "17074 Hz", "17830 Hz", "18620 Hz", "19444 Hz", "20305 Hz", "21204 Hz", "22143 Hz", "23123 Hz", "24147 Hz", "25216 Hz", "26332 Hz", "27498 Hz", "28715 Hz", "29987 Hz", "31314 Hz", "32701 Hz", "34148 Hz", "35660 Hz", "37239 Hz", "38888 Hz", "40610 Hz", "42408 Hz", "44285 Hz", "46246 Hz", "48293 Hz", "50431 Hz", "52664 Hz", "54996 Hz", "57431 Hz", "59973 Hz", "62629 Hz", "65401 Hz", "68297 Hz", "71321 Hz", "74478 Hz", "77776 Hz", "81219 Hz", "84815 Hz", "88570 Hz", "92492 Hz", "96587 Hz", "100863 Hz", "105328 Hz", "109992 Hz", "114861 Hz", "119947 Hz", "125257 Hz", "130803 Hz", "136594 Hz", "142642 Hz", "148957 Hz", "155552 Hz", "162439 Hz", "169630 Hz", "177140 Hz", "184983 Hz", "193173 Hz", "201726 Hz", "210657 Hz", "219983 Hz", "229723 Hz", "239893 Hz", "250514 Hz" ] } ] }, { "CODE_FORMAT": [ { "VarDescription": [ { "DataType": "CDF_CHAR" }, { "NumElements": 2 }, { "NumDims": 0 }, { "RecVariance": "NOVARY" }, { "Compression": "GZIP.6" }, { "NumWrittenRecords": 1 }, { "PadValue": " " }, { "BlockingFactor": 1 } ] }, { "VarAttributes": [ { "VAR_TYPE": "metadata" }, { "FIELDNAM": "Integer code display format" }, { "CATDESC": "printf-style format for code variables (MODE/ANT/ANT_A/ANT_B)" }, { "FORMAT": "A2" } ] }, { "VarData": [ "%d" ] } ] }, { "Epoch": [ { "VarDescription": [ { "DataType": "CDF_TIME_TT2000" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "PadValue": "0000-01-01T00:00:00.000000000" }, { "BlockingFactor": 1 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "Time" }, { "CATDESC": "Time tags (UTC) in TT2000 (ns since 2000-01-01T12:00:00)." }, { "DISPLAY_TYPE": "time_series" }, { "LABLAXIS": "Time" }, { "UNITS": "ns" }, { "TIME_BASE": "J2000" }, { "SI_conversion": "1e-9>s" }, { "MONOTON": "INCREASE" }, { "FILLVAL": "9999-12-31T23:59:59.999999999" }, { "VALIDMIN": "1994-11-01T00:00:00.000000000" }, { "VALIDMAX": "2094-11-01T00:00:00.000000000" } ] } ] }, { "FREQUENCY": [ { "VarDescription": [ { "DataType": "CDF_DOUBLE" }, { "NumElements": 1 }, { "NumDims": 1 }, { "DimSizes": [ 96 ] }, { "RecVariance": "NOVARY" }, { "DimVariances": [ "VARY" ] }, { "Compression": "GZIP.6" }, { "NumWrittenRecords": 1 }, { "PadValue": -1e+30 }, { "BlockingFactor": 1 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "Frequency" }, { "CATDESC": "Center frequency of TNR spectral channels." }, { "FORMAT": "F12.3" }, { "LABLAXIS": "Frequency" }, { "UNITS": "Hz" }, { "VALIDMIN": 4000.0 }, { "VALIDMAX": 256000.0 }, { "SCALETYP": "log" } ] }, { "VarData": [ 4087.589, 4268.562, 4457.547, 4654.899, 4860.989, 5076.204, 5300.947, 5535.64, 5780.723, 6036.658, 6303.923, 6583.022, 6874.477, 7178.836, 7496.671, 7828.576, 8175.177, 8537.123, 8915.094, 9309.799, 9721.979, 10152.408, 10601.893, 11071.279, 11561.446, 12073.315, 12607.847, 13166.044, 13748.954, 14357.673, 14993.341, 15657.153, 16350.354, 17074.246, 17830.188, 18619.598, 19443.958, 20304.815, 21203.786, 22142.558, 23122.893, 24146.631, 25215.694, 26332.088, 27497.909, 28715.345, 29986.682, 31314.306, 32700.709, 34148.493, 35660.376, 37239.195, 38887.916, 40609.631, 42407.573, 44285.116, 46245.786, 48293.262, 50431.387, 52664.175, 54995.818, 57430.69, 59973.364, 62628.612, 65401.418, 68296.986, 71320.752, 74478.391, 77775.831, 81219.261, 84815.145, 88570.232, 92491.572, 96586.523, 100862.774, 105328.351, 109991.635, 114861.381, 119946.729, 125257.224, 130802.835, 136593.971, 142641.503, 148956.782, 155551.662, 162438.523, 169630.29, 177140.465, 184983.143, 193173.047, 201725.548, 210656.701, 219983.27, 229722.762, 239893.457, 250514.448 ] } ] }, { "PSD_V2": [ { "VarDescription": [ { "DataType": "CDF_DOUBLE" }, { "NumElements": 1 }, { "NumDims": 1 }, { "DimSizes": [ 96 ] }, { "RecVariance": "VARY" }, { "DimVariances": [ "VARY" ] }, { "Compression": "GZIP.6" }, { "PadValue": -1e+30 }, { "BlockingFactor": 86 } ] }, { "VarAttributes": [ { "VAR_TYPE": "data" }, { "FIELDNAM": "PSD" }, { "CATDESC": "Electric field power spectral density" }, { "FORMAT": "E12.4" }, { "DISPLAY_TYPE": "spectrogram" }, { "LABLAXIS": "PSD (V^2/Hz)" }, { "UNITS": "V^2/Hz" }, { "SI_conversion": "1e0>V^2/Hz" }, { "FILLVAL": -1e+31 }, { "VALIDMIN": 0.0 }, { "VALIDMAX": 1.0 }, { "SCALETYP": "log" }, { "DEPEND_0": "Epoch" }, { "DEPEND_1": "FREQUENCY" }, { "LABL_PTR_1": "FREQ_LABEL" } ] } ] }, { "BACKGROUND": [ { "VarDescription": [ { "DataType": "CDF_DOUBLE" }, { "NumElements": 1 }, { "NumDims": 1 }, { "DimSizes": [ 96 ] }, { "RecVariance": "NOVARY" }, { "DimVariances": [ "VARY" ] }, { "Compression": "GZIP.6" }, { "NumWrittenRecords": 1 }, { "PadValue": -1e+30 }, { "BlockingFactor": 1 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "Background (1%)" }, { "CATDESC": "1st-percentile power spectral density per frequency for the day (V^2/Hz)" }, { "FORMAT": "E12.4" }, { "UNITS": "V^2/Hz" }, { "SI_conversion": "1e0>V^2/Hz" }, { "VALIDMIN": 0.0 }, { "VALIDMAX": 1.0 }, { "DEPEND_0": "FREQUENCY" }, { "LABL_PTR_1": "FREQ_LABEL" } ] }, { "VarData": [ 1.9983e-14, 9.599e-15, 5.0646e-15, 2.8006e-15, 1.8493e-15, 1.1756e-15, 9.3284e-16, 7.4526e-16, 6.8581e-16, 6.887e-16, 6.3239e-16, 6.5092e-16, 7.1694e-16, 6.4515e-16, 6.4493e-16, 6.9374e-16, 6.0865e-16, 6.353e-16, 5.8626e-16, 5.6772e-16, 4.9628e-16, 4.4495e-16, 4.155e-16, 4.1441e-16, 3.5631e-16, 2.9787e-16, 2.9145e-16, 2.4843e-16, 2.2395e-16, 1.6784e-16, 1.6044e-16, 1.4428e-16, 8.4781e-17, 7.6418e-17, 6.9785e-17, 7.086e-17, 6.2723e-17, 5.6005e-17, 5.5621e-17, 5.948e-17, 5.7086e-17, 4.8536e-17, 4.1747e-17, 3.634e-17, 3.3243e-17, 2.7721e-17, 2.5894e-17, 2.4418e-17, 2.1906e-17, 2.0641e-17, 1.9364e-17, 1.8648e-17, 1.7864e-17, 1.6086e-17, 1.4465e-17, 1.3912e-17, 1.3673e-17, 1.3132e-17, 2.2799e-17, 1.7175e-17, 1.0755e-17, 9.1711e-18, 7.3666e-18, 6.6145e-18, 3.1078e-18, 2.7673e-18, 2.4203e-18, 2.0532e-18, 1.6044e-18, 1.3717e-18, 1.1865e-18, 9.2554e-19, 8.1554e-19, 6.5306e-19, 1.0941e-18, 7.258e-19, 4.2436e-19, 3.2831e-19, 2.9981e-19, 2.6632e-19, 2.1289e-19, 1.7744e-19, 1.4282e-19, 2.6849e-19, 5.4268e-19, 9.7702e-20, 9.4163e-20, 8.485e-20, 7.3269e-20, 7.1295e-20, 6.7374e-19, 2.3091e-18, 1.1979e-19, 7.1765e-20, 9.2495e-20, 2.6803e-19 ] } ] }, { "MODE": [ { "VarDescription": [ { "DataType": "CDF_INT2" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "Compression": "GZIP.6" }, { "PadValue": -32767 }, { "BlockingFactor": 32768 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "TNR mode" }, { "CATDESC": "Instrument mode code per spectrum. 0=16ch TNRA, 1=16ch TNRB, 2=32ch TNRA, 3=32ch TNRB, 4=16+16 TNRA+TNRB. -32768=fill." }, { "FORMAT": "I3" }, { "FORM_PTR": "CODE_FORMAT" }, { "DISPLAY_TYPE": "time_series" }, { "LABLAXIS": "Mode" }, { "UNITS": "code" }, { "SI_conversion": "1e0>" }, { "FILLVAL": -32768 }, { "VALIDMIN": 0 }, { "VALIDMAX": 4 }, { "DEPEND_0": "Epoch" } ] } ] }, { "ANT": [ { "VarDescription": [ { "DataType": "CDF_INT2" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "Compression": "GZIP.6" }, { "PadValue": -32767 }, { "BlockingFactor": 32768 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "Antenna combination" }, { "CATDESC": "Two-bit DPU code (00,01,10,11) selecting one of four receiver-pair combinations. This numeric code is the commanded selector as encoded in telemetry; the actual per-receiver connections are given by ANT_A (TNRA) and ANT_B (TNRB). FILL=-32768." }, { "FORMAT": "I3" }, { "FORM_PTR": "CODE_FORMAT" }, { "DISPLAY_TYPE": "time_series" }, { "LABLAXIS": "Antenna" }, { "UNITS": "code" }, { "SI_conversion": "1e0>" }, { "FILLVAL": -32768 }, { "VALIDMIN": 0 }, { "VALIDMAX": 3 }, { "DEPEND_0": "Epoch" } ] } ] }, { "ANT_A": [ { "VarDescription": [ { "DataType": "CDF_INT2" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "Compression": "GZIP.6" }, { "PadValue": -32767 }, { "BlockingFactor": 32768 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "TNRA dipole" }, { "CATDESC": "Electric dipole connected to TNRA per spectrum. Codes: 0=unused, 1=Ex, 2=Ey; 3 is not used by TNRA; FILL=-32768." }, { "FORMAT": "I3" }, { "FORM_PTR": "CODE_FORMAT" }, { "DISPLAY_TYPE": "time_series" }, { "LABLAXIS": "TNRA" }, { "UNITS": "code" }, { "SI_conversion": "1e0>" }, { "FILLVAL": -32768 }, { "VALIDMIN": 0 }, { "VALIDMAX": 3 }, { "DEPEND_0": "Epoch" } ] } ] }, { "ANT_B": [ { "VarDescription": [ { "DataType": "CDF_INT2" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "Compression": "GZIP.6" }, { "PadValue": -32767 }, { "BlockingFactor": 32768 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "TNRB dipole" }, { "CATDESC": "Electric dipole connected to TNRB per spectrum. Codes: 0=unused, 1=Ex, 2=Ey, 3=Ez; FILL=-32768." }, { "FORMAT": "I3" }, { "FORM_PTR": "CODE_FORMAT" }, { "DISPLAY_TYPE": "time_series" }, { "LABLAXIS": "TNRB" }, { "UNITS": "code" }, { "SI_conversion": "1e0>" }, { "FILLVAL": -32768 }, { "VALIDMIN": 0 }, { "VALIDMAX": 3 }, { "DEPEND_0": "Epoch" } ] } ] }, { "TNRA_ANT": [ { "VarDescription": [ { "DataType": "CDF_INT1" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "Compression": "GZIP.6" }, { "PadValue": -127 }, { "BlockingFactor": 65536 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "TNRA Antenna" }, { "CATDESC": "Electric monopole connected to TNRA at each spectrum. Codes: 1=Ex, 2=Ey, 3=Ez; -128=missing/unknown." }, { "FORMAT": "I2" }, { "UNITS": "\u0000" }, { "FILLVAL": -128 }, { "VALIDMIN": 1 }, { "VALIDMAX": 3 }, { "DEPEND_0": "Epoch" } ] } ] }, { "TNRB_ANT": [ { "VarDescription": [ { "DataType": "CDF_INT1" }, { "NumElements": 1 }, { "NumDims": 0 }, { "RecVariance": "VARY" }, { "Compression": "GZIP.6" }, { "PadValue": -127 }, { "BlockingFactor": 65536 } ] }, { "VarAttributes": [ { "VAR_TYPE": "support_data" }, { "FIELDNAM": "TNRB Antenna" }, { "CATDESC": "Electric monopole connected to TNRB at each spectrum. Codes: 1=Ex, 2=Ey, 3=Ez; -128=missing/unknown." }, { "FORMAT": "I2" }, { "UNITS": "\u0000" }, { "FILLVAL": -128 }, { "VALIDMIN": 1 }, { "VALIDMAX": 3 }, { "DEPEND_0": "Epoch" } ] } ] } ] } } }