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  1. Article ; Online: Significant Diurnal Warming Events Observed by Saildrone at High Latitudes

    Jia, Chong / Minnett, Peter J. / Luo, Bingkun

    Journal of Geophysical Research: Oceans. 2023 Jan., v. 128, no. 1 p.e2022JC019368-

    2023  

    Abstract: The sea surface temperature (SST) is one of the essential parameters needed to understand the climate change in the Arctic. Saildrone, an advanced autonomous surface vehicle, has proven to be a useful tool for providing accurate SST data at high ... ...

    Abstract The sea surface temperature (SST) is one of the essential parameters needed to understand the climate change in the Arctic. Saildrone, an advanced autonomous surface vehicle, has proven to be a useful tool for providing accurate SST data at high latitudes. Here, data from two Saildrones, deployed in the Arctic in the summer of 2019, are used to investigate the diurnal variability of upper ocean thermal structure. An empirical cool skin effect model with dependence on the wind speed with new coefficients was generated. Several local large diurnal warming events were observed, the amplitudes of warming in the skin layer >5 K, rarely reported in previous studies. Furthermore, the warming signals could persist beyond 1 day. For those cases, it was found surface warm air suppressed the surface turbulent heat loss to maintain the persistence of diurnal warming under low wind conditions. Salinity also plays an important role in the formation of upper ocean density stratification during diurnal warming at high latitudes. A less salty and hence less dense surface layer was likely created by precipitation or melting sea ice, providing favorable conditions for the formation of upper ocean stratification. Comparisons with two prognostic diurnal warming models showed the simulations match reasonably well with Saildrone measurements for moderate wind speeds but exhibit large differences at low winds. Both schemes show significant negative biases in the early morning and late afternoon. It is necessary to improve the model schemes when applied at high latitudes.
    Keywords air ; climate change ; diurnal variation ; geophysics ; heat ; models ; research ; salinity ; sea ice ; summer ; surface water temperature ; wind speed ; Arctic region
    Language English
    Dates of publication 2023-01
    Publishing place John Wiley & Sons, Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 161667-5
    ISSN 2169-9291 ; 2169-9275 ; 0148-0227 ; 0196-2256
    ISSN (online) 2169-9291
    ISSN 2169-9275 ; 0148-0227 ; 0196-2256
    DOI 10.1029/2022JC019368
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Evaluation of the ERA5 Sea Surface Skin Temperature with Remotely-Sensed Shipborne Marine-Atmospheric Emitted Radiance Interferometer Data

    Luo, Bingkun / Minnett, Peter J

    Remote Sensing. 2020 June 09, v. 12, no. 11

    2020  

    Abstract: Sea surface temperature is very important in weather and ocean forecasting, and studying the ocean, atmosphere and climate system. Measuring the sea surface skin temperature (SSTₛₖᵢₙ) with infrared radiometers onboard earth observation satellites and ... ...

    Abstract Sea surface temperature is very important in weather and ocean forecasting, and studying the ocean, atmosphere and climate system. Measuring the sea surface skin temperature (SSTₛₖᵢₙ) with infrared radiometers onboard earth observation satellites and shipboard instruments is a mature subject spanning several decades. Reanalysis model output SSTₛₖᵢₙ, such as from the newly released ERA5, is very widely used and has been applied for monitoring climate change, weather prediction research, and other commercial applications. The ERA5 output SSTₛₖᵢₙ data must be rigorously evaluated to meet the stringent accuracy requirements for climate research. This study aims to estimate the accuracy of the ERA5 SSTₛₖᵢₙ fields and provide an associated error estimate by using measurements from accurate shipboard infrared radiometers: the Marine-Atmosphere Emitted Radiance Interferometers (M-AERIs). Overall, the ERA5 SSTₛₖᵢₙ has high correlation with ship-based radiometric measurements, with an average difference of~0.2 K with a Pearson correlation coefficient (R) of 0.993. Parts of the discrepancies are related to dust aerosols and variability in air-sea temperature differences. The downward radiative flux due to dust aerosols leads to significant SSTₛₖᵢₙ differences for ERA5. The SSTₛₖᵢₙ differences are greater with the large, positive air–sea temperature differences. This study provides suggestions for the applicability of ERA5 SSTₛₖᵢₙ fields in a selection of research applications.
    Keywords aerosols ; climate ; climate change ; dust ; infrared radiometers ; interferometers ; models ; monitoring ; radiometry ; remote sensing ; satellites ; skin temperature ; surface water temperature ; weather forecasting
    Language English
    Dates of publication 2020-0609
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2513863-7
    ISSN 2072-4292
    ISSN 2072-4292
    DOI 10.3390/rs12111873
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Comparison of SLSTR Thermal Emissive Bands Clear-Sky Measurements with Those of Geostationary Imagers

    Luo, Bingkun / Minnett, Peter J

    Remote Sensing. 2020 Oct. 09, v. 12, no. 20

    2020  

    Abstract: The Sentinel-3 series satellites belong to the European Earth Observation satellite missions for supporting oceanography, land, and atmospheric studies. The Sea and Land Surface Temperature Radiometer (SLSTR) onboard the Sentinel-3 satellites was ... ...

    Abstract The Sentinel-3 series satellites belong to the European Earth Observation satellite missions for supporting oceanography, land, and atmospheric studies. The Sea and Land Surface Temperature Radiometer (SLSTR) onboard the Sentinel-3 satellites was designed to provide a significant improvement in remote sensing of skin sea surface temperature (SSTₛₖᵢₙ). The successful application of SLSTR-derived SSTₛₖᵢₙ fields depends on their accuracies. Based on sensor-dependent radiative transfer model simulations, geostationary Geostationary Operational Environmental Satellite (GOES-16) Advanced Baseline Imagers (ABI) and Meteosat Second Generation (MSG-4) Spinning Enhanced Visible and Infrared Imager (SEVIRI) brightness temperatures (BT) have been transformed to SLSTR equivalents to permit comparisons at the pixel level in three ocean regions. The results show the averaged BT differences are on the order of 0.1 K and the existence of small biases between them are likely due to the uncertainties in cloud masking, satellite view angle, solar azimuth angle, and reflected solar light. This study demonstrates the feasibility of combining SSTₛₖᵢₙ retrievals from SLSTR with those of ABI and SEVIRI.
    Keywords bias ; fields ; oceanography ; radiative transfer ; remote sensing ; satellites ; simulation models ; solar radiation ; spinning ; surface water temperature ; uncertainty
    Language English
    Dates of publication 2020-1009
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    Note NAL-light
    ZDB-ID 2513863-7
    ISSN 2072-4292
    ISSN 2072-4292
    DOI 10.3390/rs12203279
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Infrared satellite-derived sea surface skin temperature sensitivity to aerosol vertical distribution ̶ Field data analysis and model simulations

    Luo, Bingkun / Minnett, Peter J / Nalli, Nicholas R

    Elsevier Inc. Remote sensing of environment. 2021 Jan., v. 252

    2021  

    Abstract: Sea surface temperature is an Essential Climate Variable. The radiative impact of mineral dust is one of the major contributors to inaccuracies in the satellite-retrieved sea surface skin temperature (SSTₛₖᵢₙ). Different aerosol dust vertical ... ...

    Abstract Sea surface temperature is an Essential Climate Variable. The radiative impact of mineral dust is one of the major contributors to inaccuracies in the satellite-retrieved sea surface skin temperature (SSTₛₖᵢₙ). Different aerosol dust vertical distributions have varying effects on the satellite-derived SSTₛₖᵢₙ. To further investigate the physical mechanisms of aerosol effects on Terra MODerate-resolution Imaging Spectroradiometers (MODIS) derived SSTₛₖᵢₙ, the aerosol radiative effects were studied with a field-data match-up analysis and radiative transfer simulations. The field data are measurements of the SSTₛₖᵢₙ derived from highly accurate ship-based infrared spectrometers vertical atmospheric temperature and water vapor radiosonde profiles. The aerosol dust concentrations in three-dimensions from the NASA Modern-Era Retrospective analysis for Research and Applications, Version 2 have been used as input to radiative transfer simulations. Based on the analysis of field data and simulations, we have empirically determined that the sensitivity of the Terra MODIS retrieved SSTₛₖᵢₙ accuracies is related to 1) dust concentration in the atmosphere, 2) the dust layer altitude, and 3) the dust layer temperature. As the aerosol altitude increases, the effect on the SSTₛₖᵢₙ retrievals becomes more negative in proportion to the temperature contrast with the sea surface. SSTₛₖᵢₙ differences, satellite-derived - surface measurements, for a given aerosol layer optical depth vary between −3 K and 1 K according to our match-up comparisons and radiative transfer simulations.
    Keywords aerosols ; air temperature ; altitude ; climate ; dust ; radiative transfer ; retrospective studies ; skin temperature ; spatial distribution ; surface water temperature ; water vapor
    Language English
    Dates of publication 2021-01
    Publishing place Elsevier Inc.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 431483-9
    ISSN 0034-4257
    ISSN 0034-4257
    DOI 10.1016/j.rse.2020.112151
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Glutathione/pH-responsive copper-based nanoplatform for amplified chemodynamic therapy through synergistic cycling regeneration of reactive oxygen species and dual glutathione depletion

    Jia, Sihan / Ke, Sunkui / Du, Li / Chen, Shengqiang / Luo, Bingkun / Xiong, Yeqi / Li, Yang / Wang, Peiyuan / Ye, Shefang

    Journal of Colloid And Interface Science. 2023 Aug. 07,

    2023  

    Abstract: The rapid scavenging of reactive oxygen species (ROS) by glutathione (GSH) and insufficient endogenous hydrogen peroxide (H₂O₂) in tumor cells are the major factors greatly restricting the efficacy of chemodynamic therapy (CDT). Herein, we developed a ... ...

    Abstract The rapid scavenging of reactive oxygen species (ROS) by glutathione (GSH) and insufficient endogenous hydrogen peroxide (H₂O₂) in tumor cells are the major factors greatly restricting the efficacy of chemodynamic therapy (CDT). Herein, we developed a tumor microenvironment (TME)-responsive Cu-based metal-mesoporous organosilica nanoplatform integrating vitamin k3 (VK3), which could deplete GSH and specifically regenerate H₂O₂ for amplified CDT cancer therapy. Once the CuO@MON-PEG/VK3 nanoparticles entered into the tumor cells through enhanced permeability and retention (EPR) effect, the organosilicon shell and CuO core would be successively degraded upon the triggering of GSH and endo/lysosomal acidity. Subsequently, the enriched tetrasulfide bridges and released Cu²⁺ could consume GSH substantially, thus triggering Fenton-like reaction for CDT. Furthermore, the released VK3 could be catalyzed by the highly expressed quinone oxidoreductase-1 (NQO1) inside tumor cells to generate sufficient H₂O₂ through a “reversible” redox cycle, which in turn promoted Cu⁺-mediated Fenton-like reaction. Both in vitro and in vivo studies demonstrated that this nanoplatform could achieve synergistic CDT therapy against tumor through synergistic cycling regeneration of ROS and dual GSH exhaustion with excellent biosafety. Our finding highlight the promising potential of CuO@MON-PEG/VK3 nanoplatform with multiple oxidative stress amplification for highly efficient tumor therapy.
    Keywords acidity ; biosafety ; cancer therapy ; copper ; glutathione ; hydrogen peroxide ; menadione ; nanoparticles ; neoplasms ; organosilicon compounds ; oxidative stress ; permeability ; Tumor microenvironment ; Chemodynamic therapy ; Reactive oxygen species
    Language English
    Dates of publication 2023-0807
    Publishing place Elsevier Inc.
    Document type Article ; Online
    Note Pre-press version
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2023.08.043
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Regional and Seasonal Variability of the Oceanic Thermal Skin Effect

    Luo, Bingkun / Minnett, Peter J. / Szczodrak, Malgorzata / Akella, Santha

    Journal of geophysical research. 2022 May, v. 127, no. 5

    2022  

    Abstract: The heat exchange between the ocean and atmosphere through turbulent and radiative processes is a fundamental component of the climate system. An accurate representation of the physical processes at the ocean thermal skin layer in numerical weather ... ...

    Abstract The heat exchange between the ocean and atmosphere through turbulent and radiative processes is a fundamental component of the climate system. An accurate representation of the physical processes at the ocean thermal skin layer in numerical weather prediction and climate models is critical to the skill of the model forecasts and the fidelity of derived fields. Over many years we have deployed instruments on many ships to measure the sea‐surface skin temperature and variables that control surface exchanges. Here, the nighttime cool skin and daytime diurnal warming characteristics are investigated using our ship data in the Caribbean region. Overall comparisons with existing parameterizations and models show encouraging results: the biases of various cool skin schemes vary between −0.128 and 0.028 K; a new cool skin equation was derived. Several diurnal warming models are evaluated, with their accuracies being related to the wind speed, time, shortwave‐radiation, and air‐sea temperature difference.
    Keywords climate ; equations ; geophysics ; heat transfer ; research ; seasonal variation ; skin temperature ; weather forecasting ; wind speed ; Caribbean
    Language English
    Dates of publication 2022-05
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 161667-5
    ISSN 2169-9291 ; 2169-9275 ; 0148-0227 ; 0196-2256
    ISSN (online) 2169-9291
    ISSN 2169-9275 ; 0148-0227 ; 0196-2256
    DOI 10.1029/2022JC018465
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Glutathione/pH-responsive copper-based nanoplatform for amplified chemodynamic therapy through synergistic cycling regeneration of reactive oxygen species and dual glutathione depletion.

    Jia, Sihan / Ke, Sunkui / Tu, Li / Chen, Shengqiang / Luo, Bingkun / Xiong, Yeqi / Li, Yang / Wang, Peiyuan / Ye, Shefang

    Journal of colloid and interface science

    2023  Volume 652, Issue Pt A, Page(s) 329–340

    Abstract: The rapid scavenging of reactive oxygen species (ROS) by glutathione (GSH) and insufficient endogenous hydrogen peroxide ( ... ...

    Abstract The rapid scavenging of reactive oxygen species (ROS) by glutathione (GSH) and insufficient endogenous hydrogen peroxide (H
    MeSH term(s) Humans ; Copper/pharmacology ; Reactive Oxygen Species ; Hydrogen Peroxide/pharmacology ; Nanoparticles ; Glutathione ; Hydrogen-Ion Concentration ; Cell Line, Tumor ; Neoplasms ; Tumor Microenvironment
    Chemical Substances cupric oxide (V1XJQ704R4) ; Copper (789U1901C5) ; Reactive Oxygen Species ; Hydrogen Peroxide (BBX060AN9V) ; Glutathione (GAN16C9B8O)
    Language English
    Publishing date 2023-08-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2023.08.043
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Amino acid-based metallo-supramolecular nanoassemblies capable of regulating cellular redox homeostasis for tumoricidal chemo-/photo-/catalytic combination therapy.

    Tu, Li / Chen, Shengqiang / Yuan, Zhikang / Xiong, Yeqi / Luo, Bingkun / Chen, Ying / Hou, Zhenqing / Ke, Sunkui / Lin, Naibo / Li, Chao / Ye, Shefang

    Journal of colloid and interface science

    2024  Volume 663, Page(s) 810–824

    Abstract: Nanozymes, as nanomaterials with natural enzyme activities, have been widely applied to deliver various therapeutic agents to synergistically combat the progression of malignant tumors. However, currently common inorganic nanozyme-based drug delivery ... ...

    Abstract Nanozymes, as nanomaterials with natural enzyme activities, have been widely applied to deliver various therapeutic agents to synergistically combat the progression of malignant tumors. However, currently common inorganic nanozyme-based drug delivery systems still face challenges such as suboptimal biosafety, inadequate stability, and inferior tumor selectivity. Herein, a super-stable amino acid-based metallo-supramolecular nanoassembly (FPIC NPs) with peroxidase (POD)- and glutathione oxidase (GSHOx)-like activities was fabricated via Pt
    MeSH term(s) Humans ; Photochemotherapy ; Amino Acids ; Combined Modality Therapy ; Indocyanine Green/pharmacology ; Neoplasms/drug therapy ; Coloring Agents ; Curcumin ; Oxidation-Reduction ; Cell Line, Tumor ; Nanoparticles
    Chemical Substances Amino Acids ; Indocyanine Green (IX6J1063HV) ; Coloring Agents ; Curcumin (IT942ZTH98)
    Language English
    Publishing date 2024-02-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2024.02.197
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Saharan Dust Effects on North Atlantic Sea‐Surface Skin Temperatures

    Luo, Bingkun / Minnett, Peter J. / Zuidema, Paquita / Nalli, Nicholas R. / Akella, Santha

    Journal of geophysical research. 2021 Apr., v. 126, no. 4

    2021  

    Abstract: Saharan dust outbreaks frequently propagate westward over the Atlantic Ocean; accurate quantification of the dust aerosol scattering and absorption effect on the surface radiative fluxes (SRF) is fundamental to understanding critical climate feedbacks. ... ...

    Abstract Saharan dust outbreaks frequently propagate westward over the Atlantic Ocean; accurate quantification of the dust aerosol scattering and absorption effect on the surface radiative fluxes (SRF) is fundamental to understanding critical climate feedbacks. By exploiting large sets of measurements from many ship campaigns in conjunction with reanalysis products, this study characterizes the sensitivity of the SRF and skin Sea‐Surface Temperature (SSTₛₖᵢₙ) to the Saharan dust aerosols using models of the atmospheric radiative transfer and thermal skin effect. Saharan dust outbreaks can decrease the surface shortwave radiation up to 190 W/m², and an analysis of the corresponding SSTₛₖᵢₙ changes using a thermal skin model suggests dust‐induced cooling effects as large as −0.24 K during daytime and a warming effect of up of 0.06 K during daytime and nighttime respectively. Greater physical insight into the radiative transfer through an aerosol‐burdened atmosphere will substantially improve the predictive capabilities of weather and climate studies on a regional basis.
    Keywords absorption ; aerosols ; climate ; dust ; geophysics ; models ; radiative transfer ; research ; shortwave radiation ; surface water temperature ; weather ; Atlantic Ocean
    Language English
    Dates of publication 2021-04
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 161667-5
    ISSN 2169-9291 ; 2169-9275 ; 0148-0227 ; 0196-2256
    ISSN (online) 2169-9291
    ISSN 2169-9275 ; 0148-0227 ; 0196-2256
    DOI 10.1029/2021JC017282
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: Validation of Sentinel-3A SLSTR derived Sea-Surface Skin Temperatures with those of the shipborne M-AERI

    Luo, Bingkun / Minnett, Peter J / Szczodrak, Malgorzata / Kilpatrick, Katherine / Izaguirre, Miguel

    Remote sensing of environment. 2020 July, v. 244

    2020  

    Abstract: The Skin Sea-Surface Temperature (SSTskin) derived from satellite measurements is one of the critical factors for determining ocean-atmosphere interactions in climate prediction and ocean research. Sentinel-3A is a European Earth Observation satellite ... ...

    Abstract The Skin Sea-Surface Temperature (SSTskin) derived from satellite measurements is one of the critical factors for determining ocean-atmosphere interactions in climate prediction and ocean research. Sentinel-3A is a European Earth Observation satellite mission developed to support ocean, land, and atmospheric applications. We compare three years of SSTskin from the Sea and Land Surface Temperature Radiometer (SLSTR) on board the Sentinel-3A satellite from July 2017–March 2019 with independent data from Marine-Atmospheric Emitted Radiance Interferometers (M-AERIs) deployed on research cruises. The comparison results show an average difference of −0.098 K and Robust Standard Deviation of 0.296 K between SLSTR and M-AERI SSTskin values; the average value meets the pre-launch scientific objective of a mean accuracy <0.1 K. Differences between four SSTskin retrieval algorithms have been investigated, the results show that the Dual-view 3 channels night time algorithm (D3) is better than other algorithms. This study involves determining the error and uncertainty characteristics of the SST retrievals in terms of factors that influence the accuracies of the satellite SST's, and we hope this information will be useful to improve the SLSTR atmospheric correction algorithms.
    Keywords algorithms ; climate models ; interferometers ; remote sensing ; satellites ; standard deviation ; surface water temperature ; uncertainty
    Language English
    Dates of publication 2020-07
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 431483-9
    ISSN 0034-4257
    ISSN 0034-4257
    DOI 10.1016/j.rse.2020.111826
    Database NAL-Catalogue (AGRICOLA)

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