{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,29]],"date-time":"2025-11-29T16:24:23Z","timestamp":1764433463373,"version":"build-2065373602"},"reference-count":64,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2022,9,13]],"date-time":"2022-09-13T00:00:00Z","timestamp":1663027200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"NASA Solar System Observations","award":["80NSSC21M0344","80NSSC18K1001"],"award-info":[{"award-number":["80NSSC21M0344","80NSSC18K1001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>We obtained high-resolution spectra of Jupiter between 4.6 and 5.4 \u00b5m using NIRSPEC on the Keck 2 telescope in February 2017. We measured the spatial variation of NH3, H2O, and the pressure level of deep (p &gt; 3 bar) clouds using two geometries. We aligned the slit north\u2013south on Jupiter\u2019s Central Meridian to measure the spatial variation of the gas composition and cloud structure between 66\u00b0N and 70\u00b0S. With the slit aligned east\u2013west, we also examined the longitudinal variation at two regions of the North Equatorial Belt (NEB) at 18\u00b0N and at 8\u00b0N near the latitude of the Galileo Probe entry site. We used the integrated line absorption, also known as the equivalent width, of deuterated methane (CH3D) at 4.66 \u00b5m to derive the pressure level of deep clouds between 3 and 7 bar. From thermochemical models, these are most likely water clouds. At the location of a deep cloud revealed by HST methane-band imaging, we found spectroscopic evidence for an opaque cloud at the 5 bar level. We also identified regions on Jupiter that lacked deep clouds but exhibited evidence for upper clouds and enhanced NH3. We estimated column-averaged mole fractions of H2O and NH3 above the opaque lower boundary of the deep cloud. The meridional scan exhibited significant belt-zone structure with retrieved NH3 abundances in the 200\u2013400 ppm range above the opaque lower cloud, except for a depletion (down to 90 ppm) in the NEB. Water in Jupiter\u2019s belts varies from a maximum of 7 ppm at 8\u00b0S to a minimum of 1.5 ppm at 23\u00b0S. We found evidence for water clouds and enhanced NH3 and H2O in the South Equatorial Belt Outbreak region at 13\u00b0S. The NEB is a heterogeneous region with significant variation in all of these quantities. The NH3 abundance at 18\u00b0N and 8\u00b0N varies with the longitude with mole fractions between 120 and 300 ppm. The H2O abundance at these same latitudes varies with the longitude with mole fractions between 3 and 10 ppm. Our volatile mole fractions apply to the 5 to 8 bar pressure range (or to the level of an opaque cloud top where found at shallower pressure); therefore, they imply a deeper gradient continuing to increase toward higher concentrations detected by the Galileo Probe Mass Spectrometer at 11 and 20 bar. Hot Spots in the NEB exhibit minimal cloud opacity; however, they lack prominent anomalies in the concentrations of NH3 or H2O.<\/jats:p>","DOI":"10.3390\/rs14184567","type":"journal-article","created":{"date-parts":[[2022,9,13]],"date-time":"2022-09-13T22:37:28Z","timestamp":1663108648000},"page":"4567","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["The Spatial Variation of Water Clouds, NH3, and H2O on Jupiter Using Keck Data at 5 Microns"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9679-4153","authenticated-orcid":false,"given":"Gordon L.","family":"Bjoraker","sequence":"first","affiliation":[{"name":"NASA Goddard Space Flight Center, Code 693, Greenbelt, MD 20771, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2804-5086","authenticated-orcid":false,"given":"Michael H.","family":"Wong","sequence":"additional","affiliation":[{"name":"Center for Integrative Planetary Science, University of California, Berkeley, CA 94720-3411, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4278-3168","authenticated-orcid":false,"given":"Imke","family":"de Pater","sequence":"additional","affiliation":[{"name":"Departments of Astronomy and of Earth and Planetary Science, University of California, Berkeley, CA 94720-3411, USA"}]},{"given":"Tilak","family":"Hewagama","sequence":"additional","affiliation":[{"name":"NASA Goddard Space Flight Center, Code 553, Greenbelt, MD 20771, USA"}]},{"given":"M\u00e1t\u00e9","family":"\u00c1d\u00e1mkovics","sequence":"additional","affiliation":[{"name":"Lockheed Martin Corporation, Palo Alto, CA 94304, USA"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1016\/0019-1035(73)90019-5","article-title":"Atmospheric and cloud structures of the Jovian planets","volume":"20","author":"Weidenschilling","year":"1973","journal-title":"Icarus"},{"key":"ref_2","unstructured":"Hunt, G.E. (1985). Photochemistry and Clouds of Jupiter, Saturn and Uranus. Planetary Meteorology, Cambridge University Press."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1016\/j.icarus.2014.09.042","article-title":"Fresh clouds: A parameterized updraft method for calculating cloud densities in one-dimensional models","volume":"245","author":"Wong","year":"2015","journal-title":"Icarus"},{"key":"ref_4","first-page":"566","article-title":"Design and development of NIRSPEC: A near-infrared echelle spectrograph for the Keck II telescope","volume":"Volume 3354","author":"Fowler","year":"1998","journal-title":"Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"139","DOI":"10.3847\/1538-3881\/ab3643","article-title":"First ALMA Millimeter-wavelength Maps of Jupiter, with a Multiwavelength Study of Convection","volume":"158","author":"Sault","year":"2019","journal-title":"Astron. J."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"22857","DOI":"10.1029\/98JE01766","article-title":"Thermal structure of Jupiter\u2019s atmosphere near the edge of a 5-\u03bcm hot spot in the north equatorial belt","volume":"103","author":"Seiff","year":"1998","journal-title":"J. Geophys. Res."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"58","DOI":"10.3847\/1538-4365\/ab775f","article-title":"High-resolution UV\/Optical\/IR Imaging of Jupiter in 2016\u20132019","volume":"247","author":"Wong","year":"2020","journal-title":"Astrophys. J. Suppl. Ser."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.icarus.2017.06.007","article-title":"Changes in Jupiter\u2019s Zonal Wind Profile preceding and during the Juno mission","volume":"296","author":"Tollefson","year":"2017","journal-title":"Icarus"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1088\/0004-637X\/810\/2\/122","article-title":"Jupiter\u2019s Deep Cloud Structure Revealed Using Keck Observations of Spectrally Resolved Line Shapes","volume":"810","author":"Bjoraker","year":"2015","journal-title":"Astrophys. J."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"803","DOI":"10.1016\/0022-4073(74)90124-1","article-title":"Direct integration transmittance model","volume":"14","author":"Kunde","year":"1974","journal-title":"J. Quant. Spectrosc. Radiat. Transf."},{"key":"ref_11","first-page":"999","article-title":"The Gas Composition and Deep Cloud Structure of Jupiter\u2019s Great Red Spot","volume":"999","author":"Bjoraker","year":"2018","journal-title":"Astron. J."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1016\/j.jqsrt.2004.12.004","article-title":"The 2003 edition of the GEISA\/IASI spectroscopic database","volume":"95","author":"Scott","year":"2005","journal-title":"J. Quant. Spectrosc. Radiat. Transf."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/S0022-4073(98)00134-4","article-title":"Pressure broadening and shift coefficients for H2, He and N2 in the 3\u03bd2 band of 12CH3D retrieved by a multispectrum fitting technique","volume":"63","author":"Boussin","year":"1999","journal-title":"J. Quant. Spectrosc. Radiat. Transf."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"329","DOI":"10.1016\/S0022-2852(03)00053-5","article-title":"H2-broadening coefficients in the \u03bd3 band of CH3D at low temperatures","volume":"219","author":"Lerot","year":"2003","journal-title":"J. Mol. Spectrosc."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1016\/S0022-2852(03)00019-5","article-title":"Calculated line broadening coefficients in the \u03bd2 band of CH3D perturbed by helium","volume":"219","author":"Gabard","year":"2003","journal-title":"J. Mol. Spectrosc."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"22815","DOI":"10.1029\/98JE00695","article-title":"Helium in Jupiter\u2019s atmosphere: Results from the Galileo probe helium interferometer experiment","volume":"103","author":"Hunten","year":"1998","journal-title":"J. Geophys. Res."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1139\/p83-074","article-title":"The translational-rotational absorption spectrum of hydrogen","volume":"61","author":"Bachet","year":"1983","journal-title":"Can. J. Phys."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"593","DOI":"10.1139\/p76-064","article-title":"Theory of line shape in pressure-induced absorption","volume":"54","author":"Birnbaum","year":"1976","journal-title":"Can. J. Phys."},{"key":"ref_19","unstructured":"Carroll, B., and Ostlie, D. (2007). An Introduction to Modern Astrophysics, Pearson Addison-Wesley. [2nd ed.]."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"610","DOI":"10.1051\/0004-6361:20010259","article-title":"The deuterium abundance in Jupiter and Saturn from ISO-SWS observations","volume":"370","author":"Lellouch","year":"2001","journal-title":"Astron. Astrophys."},{"key":"ref_21","unstructured":"Farmer, C.B., and Norton, R.H. (1989). A High-Resolution Atlas of the Infrared Spectrum of the Sun and the Earth Atmosphere from Space. A Compilation of ATMOS Spectra of the Region from 650 to 4800 cm\u22121 (2.3 to 16 \u03bcm). Vol. I. The Sun, NASA Technical Report NASA-RP-1224-VOL-1."},{"key":"ref_22","first-page":"511","article-title":"The ATMOS Solar Atlas","volume":"Volume 154","author":"Rabin","year":"1994","journal-title":"Infrared Solar Physics"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1016\/j.icarus.2004.04.010","article-title":"Updated Galileo probe mass spectrometer measurements of carbon, oxygen, nitrogen, and sulfur on Jupiter","volume":"171","author":"Wong","year":"2004","journal-title":"Icarus"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1016\/j.icarus.2018.11.024","article-title":"Jupiter\u2019s ammonia distribution derived from VLA maps at 3-37 GHz","volume":"322","author":"Sault","year":"2019","journal-title":"Icarus"},{"key":"ref_25","unstructured":"Bjoraker, G.L., de Pater, I., Wong, M.H., Adamkovics, M., Hewagama, T., and Orton, G. (2017, January 15\u201320). Variation in the Water and Ammonia Abundance in Jupiter\u2019s North Equatorial Belt. Proceedings of the AAS\/Division for Planetary Sciences Meeting, Provo, UT, USA."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1006\/icar.1998.5898","article-title":"Interpretation of Galileo Probe Data and Implications for Jupiter\u2019s Dry Downdrafts","volume":"132","author":"Showman","year":"1998","journal-title":"Icarus"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.icarus.2005.03.004","article-title":"Water, ammonia, and H2S mixing ratios in Jupiter\u2019s five-micron hot spots: A dynamical model","volume":"177","author":"Friedson","year":"2005","journal-title":"Icarus"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"5317","DOI":"10.1002\/2017GL073159","article-title":"The distribution of ammonia on Jupiter from a preliminary inversion of Juno microwave radiometer data","volume":"44","author":"Li","year":"2017","journal-title":"Geophys. Res. Lett."},{"key":"ref_29","unstructured":"Moeckel, C.M., de Pater, I., and de Boer, D. Ammonia Abundance Derived from Juno MWR and VLA Observations of Jupiter, Planet. Sci. J., in press."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"230","DOI":"10.1006\/icar.1998.5985","article-title":"Jupiter\u2019s Cloud Structure from Galileo Imaging Data","volume":"135","author":"Banfield","year":"1998","journal-title":"Icarus"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"67","DOI":"10.3847\/1538-3881\/aace02","article-title":"Jupiter\u2019s Mesoscale Waves Observed at 5 \u03bcm by Ground-based Observations and Juno JIRAM","volume":"156","author":"Fletcher","year":"2018","journal-title":"Astron. J."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"79","DOI":"10.3847\/1538-3881\/aacaf5","article-title":"A New, Long-lived, Jupiter Mesoscale Wave Observed at Visible Wavelengths","volume":"156","author":"Simon","year":"2018","journal-title":"Astron. J."},{"key":"ref_33","first-page":"e06399","article-title":"Jupiter\u2019s Equatorial Plumes and Hot Spots: Spectral Mapping from Gemini\/TEXES and Juno\/MWR","volume":"125","author":"Fletcher","year":"2020","journal-title":"J. Geophys. Res. (Planets)"},{"key":"ref_34","first-page":"e06206","article-title":"On the Spatial Distribution of Minor Species in Jupiter\u2019s Troposphere as Inferred From Juno JIRAM Data","volume":"125","author":"Grassi","year":"2020","journal-title":"J. Geophys. Res. (Planets)"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1002\/2017GL075221","article-title":"Ammonia in Jupiter\u2019s Troposphere From High-Resolution 5 \u00b5m Spectroscopy","volume":"44","author":"Giles","year":"2017","journal-title":"Geophys. Res. Lett."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1016\/j.icarus.2018.06.002","article-title":"Mapping of Jupiter\u2019s tropospheric NH3 abundance using ground-based IRTF\/TEXES observations at 5 \u00b5m","volume":"314","author":"Blain","year":"2018","journal-title":"Icarus"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"22847","DOI":"10.1029\/98JE01635","article-title":"Ammonia abundance in Jupiter\u2019s atmosphere derived from the attenuation of the Galileo probe\u2019s radio signal","volume":"103","author":"Folkner","year":"1998","journal-title":"J. Geophys. Res."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"316","DOI":"10.1016\/j.icarus.2009.02.002","article-title":"A new model of the hydrogen and helium-broadened microwave opacity of ammonia based on extensive laboratory measurements","volume":"202","author":"Hanley","year":"2009","journal-title":"Icarus"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"609","DOI":"10.1038\/s41550-020-1009-3","article-title":"The water abundance in Jupiter\u2019s equatorial zone","volume":"4","author":"Li","year":"2020","journal-title":"Nat. Astron."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"22831","DOI":"10.1029\/98JE01050","article-title":"The composition of the Jovian atmosphere as determined by the Galileo probe mass spectrometer","volume":"103","author":"Niemann","year":"1998","journal-title":"J. Geophys. Res."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"481","DOI":"10.1146\/annurev.astro.46.060407.145222","article-title":"The Chemical Composition of the Sun","volume":"47","author":"Asplund","year":"2009","journal-title":"Annu. Rev. Astron. Astrophys."},{"key":"ref_42","unstructured":"Wong, M.H. Deep clouds on Jupiter, Remote Sens., in press."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"457","DOI":"10.1016\/j.icarus.2015.05.030","article-title":"Cloud structure and composition of Jupiter\u2019s troposphere from 5 to \u00b5m Cassini VIMS spectroscopy","volume":"257","author":"Giles","year":"2015","journal-title":"Icarus"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"630","DOI":"10.1038\/35001021","article-title":"Moist convection as an energy source for the large-scale motions in Jupiter\u2019s atmosphere","volume":"403","author":"Ingersoll","year":"2000","journal-title":"Nature"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"192","DOI":"10.1016\/j.icarus.2004.10.004","article-title":"Dynamical implications of Jupiter\u2019s tropospheric ammonia abundance","volume":"174","author":"Showman","year":"2005","journal-title":"Icarus"},{"key":"ref_46","first-page":"e06858","article-title":"Jupiter\u2019s Temperate Belt\/Zone Contrasts Revealed at Depth by Juno Microwave Observations","volume":"126","author":"Fletcher","year":"2021","journal-title":"J. Geophys. Res. (Planets)"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"e95651","DOI":"10.1029\/2021GL095651","article-title":"Evidence for Multiple Ferrel-Like Cells on Jupiter","volume":"48","author":"Duer","year":"2021","journal-title":"Geophys. Res. Lett."},{"key":"ref_48","first-page":"e06403","article-title":"Storms and the Depletion of Ammonia in Jupiter: I. Microphysics of \u201cMushballs\u201d","volume":"125","author":"Guillot","year":"2020","journal-title":"J. Geophys. Res. (Planets)"},{"key":"ref_49","first-page":"e06404","article-title":"Storms and the Depletion of Ammonia in Jupiter: II. Explaining the Juno Observations","volume":"125","author":"Guillot","year":"2020","journal-title":"J. Geophys. Res. (Planets)"},{"key":"ref_50","unstructured":"De Pater, I. Deep Atmospheres of the Giant Planets Revealed through Radio Observations, Remote Sens., in press."},{"key":"ref_51","first-page":"10,987","article-title":"Infrared Characterization of Jupiter\u2019s Equatorial Disturbance Cycle","volume":"45","author":"Fletcher","year":"2018","journal-title":"Geophys. Res. Lett."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"E04004","DOI":"10.1029\/2005JE002556","article-title":"Vertical wind shear on Jupiter from Cassini images","volume":"111","author":"Li","year":"2006","journal-title":"J. Geophys. Res. (Planets)"},{"key":"ref_53","unstructured":"Roos-Serote, M. (1997). Spectro-Imagerie Infrarouge de V\u00e9nus et Jupiter: Interpr\u00e9tation des Observations Galileo\/NIMS. [Ph.D. Thesis, University of Paris 6]."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"4615","DOI":"10.1002\/2017GL072841","article-title":"Preliminary results on the composition of Jupiter\u2019s troposphere in hot spot regions from the JIRAM\/Juno instrument","volume":"44","author":"Grassi","year":"2017","journal-title":"Geophys. Res. Lett."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"336","DOI":"10.1016\/j.icarus.2003.11.014","article-title":"Longitude-resolved imaging of Jupiter at \u03bb=2 cm","volume":"168","author":"Sault","year":"2004","journal-title":"Icarus"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1007\/s11214-019-0631-9","article-title":"How Well Do We Understand the Belt\/Zone Circulation of Giant Planet Atmospheres?","volume":"216","author":"Fletcher","year":"2020","journal-title":"Space Sci. Rev."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"1737","DOI":"10.1126\/science.289.5485.1737","article-title":"Nonlinear Simulations of Jupiter\u2019s 5-Micron Hot Spots","volume":"289","author":"Showman","year":"2000","journal-title":"Science"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S1387-6473(02)00272-5","article-title":"The Galileo probe: How it has changed our understanding of Jupiter","volume":"47","author":"Young","year":"2003","journal-title":"New Astron. Rev."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1006\/icar.2000.6527","article-title":"Reconciling Galileo Probe Data and Ground-Based Radio Observations of Ammonia on Jupiter","volume":"149","author":"Dunn","year":"2001","journal-title":"Icarus"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"821","DOI":"10.1126\/science.aal2108","article-title":"Jupiter\u2019s interior and deep atmosphere: The initial pole-to-pole passes with the Juno spacecraft","volume":"356","author":"Bolton","year":"2017","journal-title":"Science"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1038\/s41586-018-0156-5","article-title":"Prevalent lightning sferics at 600 megahertz near Jupiter\u2019s poles","volume":"558","author":"Brown","year":"2018","journal-title":"Nature"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"1136","DOI":"10.1016\/j.jqsrt.2007.11.006","article-title":"The NEMESIS planetary atmosphere radiative transfer and retrieval tool","volume":"109","author":"Irwin","year":"2008","journal-title":"J. Quant. Spectrosc. Radiat. Transf."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"114973","DOI":"10.1016\/j.icarus.2022.114973","article-title":"A new convective parameterization applied to Jupiter: Implications for water abundance near the 24\u00b0N region","volume":"380","author":"Sankar","year":"2022","journal-title":"Icarus"},{"key":"ref_64","unstructured":"Wong, M. (2017). Dataset: Wide Field Coverage for Juno (WFCJ), WFCJ."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/18\/4567\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:30:19Z","timestamp":1760142619000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/18\/4567"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9,13]]},"references-count":64,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2022,9]]}},"alternative-id":["rs14184567"],"URL":"https:\/\/doi.org\/10.3390\/rs14184567","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2022,9,13]]}}}