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223 results on '"Kalashnikova, Olga V."'

3. Correction to “Monthly Global Estimates of Fine Particulate Matter and Their Uncertainty”

Author

van Donkelaar, Aaron, primary, Hammer, Melanie S., additional, Bindle, Liam, additional, Brauer, Michael, additional, Brook, Jeffery R., additional, Garay, Michael J., additional, Hsu, N. Christina, additional, Kalashnikova, Olga V., additional, Kahn, Ralph A., additional, Lee, Colin, additional, Levy, Robert C., additional, Lyapustin, Alexei, additional, Sayer, Andrew M., additional, and Martin, Randall V., additional

Published
2024
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7. Using HScore for Evaluation of Hemophagocytosis in Multisystem Inflammatory Syndrome Associated with COVID-19 in Children.

Author

Avrusin, Ilia S., Abramova, Natalia N., Belozerov, Konstantin E., Bregel, Liudmila V., Efremova, Olesya S., Vilnits, Alla A., Konstantinova, Julia E., Isupova, Eugenia A., Kornishina, Tatiana L., Masalova, Vera V., Kalashnikova, Olga V., Chasnyk, Vyacheslav G., Aleksandrovich, Yuriy S., Ivanov, Dmitri O., and Kostik, Mikhail M.

Subjects
MULTISYSTEM inflammatory syndrome, BLOOD sedimentation, MULTISYSTEM inflammatory syndrome in children, ASPIRIN, COVID-19, HAND-foot syndrome, MYELOFIBROSIS
Abstract

Hemophagocytic syndrome is a key point in the pathogenesis of severe forms of multisystem inflammatory syndrome associated with COVID-19 in children (MIS-C). The factors associated with hemophagocytosis in patients with MIS-C were assessed in the present study of 94 boys and 64 girls ranging in age from 4 months to 17 years, each of whose HScore was calculated. In accordance with a previous analysis, patients with HScore ≤ 91 (n = 79) and HScore > 91 (n = 79) were compared. Patients with HScore > 91 had a higher frequency of symptoms such as cervical lymphadenopathy, dry cracked lips, bright mucous, erythema/swelling of hands and feet, peeling of fingers, edematous syndrome, hepatomegaly, splenomegaly, and hypotension/shock. They also had a higher erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) and D-dimer levels, and a tendency to anemia, thrombocytopenia, and hypofibrinogenemia. They more often needed acetylsalicylic acid and biological treatment and were admitted to ICU in 70.9% of cases. Conclusion: The following signs of severe MIS-C were associated with HScore > 91: myocardial involvement, pericarditis, hypotension/shock, and ICU admission. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Determination of Risk Factors for Severe Life-Threatening Course of Multisystem Inflammatory Syndrome Associated with COVID-19 in Children

Author

Avrusin, Ilia S., primary, Abramova, Natalia N., additional, Belozerov, Konstantin E., additional, Kondratiev, Gleb V., additional, Bregel, Liudmila V., additional, Efremova, Olesya S., additional, Vilnits, Alla A., additional, Konstantinova, Julia E., additional, Isupova, Eugenia A., additional, Kornishina, Tatiana L., additional, Masalova, Vera V., additional, Felker, Eugeniy Yu., additional, Kalashnikova, Olga V., additional, Chasnyk, Vyacheslav G., additional, Aleksandrovich, Yuriy S., additional, and Kostik, Mikhail M., additional

Published
2023
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10. The predictors of severe course of multisystem inflammatory syndrome associated with the new coronavirus infection COVID-19 in children: results of a retrospective-prospective multicenter study

Author

Avrusin, Ilia S., primary, Abramova, Natalia N., additional, Belozerov, Konstantin E., additional, Efremova, Olesya S., additional, Bregel, Lyudmila V., additional, Kondratiev, Gleb V., additional, Dondurey, Elena A., additional, Vilnitz, Alla A., additional, Konstantinova, Yulia E., additional, Burtseva, Tatiana E., additional, Vinnikova, Ekaterina I., additional, Isupova, Evgeniya A., additional, Kornishina, Tatiana L., additional, Masalova, Vera V., additional, Redkina, Maria V., additional, Solodkova, Irina V., additional, Kalashnikova, Olga V., additional, Chasnyk, Vyacheslav G., additional, Alexandrovich, Yuri S., additional, and Kostik, Mikhail M., additional

Published
2023
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11. COVID-19 Associated Vasculitis Confirmed by the Tissues RT-PCR: A Case Series Report

Author

Belozerov, Konstantin E., primary, Avrusin, Ilia S., additional, Andaryanova, Lyubov I., additional, Guseva, Anna M., additional, Shogenova, Zaira S., additional, Belanovich, Irina N., additional, Lobacheva, Anna V., additional, Kornishina, Tatiana L., additional, Isupova, Eugenia A., additional, Masalova, Vera V., additional, Kalashnikova, Olga V., additional, Nokhrin, Andrey V., additional, Panova, Tatyana F., additional, Dutova, Yulia P., additional, Myshkovskaya, Svetlana L., additional, Kostyunin, Kirill Y., additional, Komissarov, Andrey B., additional, Chasnyk, Vyacheslav G., additional, Bregel, Liudmila V., additional, and Kostik, Mikhail M., additional

Published
2023
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18. Retrieving Aerosol Characteristics From the PACE Mission, Part 2: Multi-Angle and Polarimetry

Author

Remer, Lorraine A, Knobelspiesse, Kirk, Zhai, Peng-Wang, Xu, Feng, Kalashnikova, Olga V, Chowdhary, Jacek, Hasekamp, Otto, Dubovik, Oleg, Wu, Lianghai, Ahmad, Ziauddin, Boss, Emmanuel, Cairns, Brian, Coddington, Odele, Davis, Anthony B, Dierssen, Heidi M, Diner, David J, Franz, Bryan, Frouin, Robert, Gao, Bo-Cai, Ibrahim, Amir, Levy, Robert C, Martins, J. Vanderlei, Omar, Ali H, and Torres, Omar

Subjects
Geosciences (General)
Abstract

The Plankton, Aerosol, Clouds, ocean Ecosystem (PACE) mission presents new opportunities and new challenges in applying observations of two complementary multi-angle polarimeters for the space-based retrieval of global aerosol properties.Aerosol remote sensing from multi-angle radiometric-only observations enables aerosol characterization to a greater degree than single-view radiometers, as demonstrated by nearly two decades of heritage instruments. Adding polarimetry to the multi-angle observations allows for the retrieval of aerosol optical depth, Angstrom exponent,parameters of size distribution, measures of aerosol absorption, complex refractive index and degree of non-sphericity of the particles, as demonstrated by two independent retrieval algorithms applied to the heritage POLarization and Directionality of the Earth's Reflectance (POLDER) instrument. The reason why this detailed particle characterization is possible is because a multi-angle polarimeter measurement contains twice the number of Degrees of Freedom of Signal (DFS) compared to an observation from a single-view radiometer. The challenges of making use of this information content involve separating surface signal from atmospheric signal, especially when the surface is optically complex and especially in the ultraviolet portion of the spectrum where we show the necessity of polarization in making that separation. The path forward is likely to involve joint retrievalsthat will simultaneously retrieve aerosol and surface properties, although advances will berequired in radiative transfer modeling and in representing optically complex constituents in those models. Another challenge is in having the processing capability that can keep pace with the output of these instruments in an operational environment. Yet, preliminaryalgorithms applied to airborne multi-angle polarimeter observations offer encouraging results that demonstrate the advantages of these instruments to retrieve aerosol layer height, particle single scattering albedo, size distribution and spectral optical depth, and also show the necessity of polarization measurements, not just multi-angle radiometricmeasurements, to achieve these results.

Published
2019
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19. Going Beyond Standard Ocean Color Observations: Lidar and Polarimetry

Author

Jamet, Cedric, Ibrahim, Amir, Ahmad, Ziauddin, Angelini, Federico, Babin, Marcel, Behrenfeld, Michael J, Boss, Emmanuel, Cairns, Brian, Churnside, James, Chowdhary, Jacek, Davis, Anthony B, Dionisi, Davide, Duforet-Gaurier, Lucile, Franz, Brian, Frouin, Robert, Gao, Meng, Gray, Deric, Hasekamp, Otto, He, Xianqiang, Hostetler, Chris, Kalashnikova, Olga V, Knobelspiesse, Kirk, Lacour, Leo, Loisel, Hubert, Martins, Vanderlei, Rehm, Eric, Remer, Lorraine, Sanhaj, Idriss, Stamnes, Knut, Stamnes, Snorre, Victori, Stephane, Werdell, Jeremy, and Zhai, Peng-Wang

Subjects
Oceanography, Earth Resources And Remote Sensing
Abstract

Passive ocean color images have provided a sustained synoptic view of the distribution of ocean optical properties and color and biogeochemical parameters for the past 20-plus years. These images have revolutionized our view of the ocean. Remote sensing of ocean color has relied on measurements of the radiance emerging at the top of the atmosphere, thus neglecting the polarization and the vertical components. Ocean color remote sensing utilizes the intensity and spectral variation of visible light scattered upward from beneath the ocean surface to derive concentrations of biogeochemical constituents and inherent optical properties within the ocean surface layer. However, these measurements have some limitations. Specifically, the measured property is a weighted-integrated value over a relatively shallow depth, it provides no information during the night and retrievals are compromised by clouds, absorbing aerosols, and low Sun zenithal angles. In addition, ocean color data provide limited information on the morphology and size distribution of marine particles. Major advances in our understanding of global ocean ecosystems will require measurements from new technologies, specifically lidar and polarimetry. These new techniques have been widely used for atmospheric applications but have not had as much as interest from the ocean color community. This is due to many factors including limited access to in-situ instruments and/or space-borne sensors and lack of attention in university courses and ocean science summer schools curricula. However, lidar and polarimetry technology will complement standard ocean color products by providing depth-resolved values of attenuation and scattering parameters and additional information about particle morphology and chemical composition. This review aims at presenting the basics of these techniques, examples of applications and at advocating for the development of in-situ and space-borne sensors. Recommendations are provided on actions that would foster the embrace of lidar and polarimetry as powerful remote sensing tools by the ocean science community.

Published
2019
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22. Standard and increased canakinumab dosing to quiet macrophage activation syndrome in children with systemic juvenile idiopathic arthritis

Author

Kostik, Mikhail M., primary, Isupova, Eugenia A., additional, Belozerov, Konstantin, additional, Likhacheva, Tatyana S., additional, Suspitsin, Evgeny N., additional, Raupov, Rinat, additional, Masalova, Vera V., additional, Chikova, Irina A., additional, Dubko, Margarita F., additional, Kalashnikova, Olga V., additional, Chasnyk, Vyacheslav G., additional, and Cron, Randy Q., additional

Published
2022
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23. Uveitis Is a Risk Factor for Juvenile Idiopathic Arthritis' Significant Flare in Patients Treated With Biologics

Author

Kostik, Mikhail M., primary, Gaidar, Ekaterina V., additional, Sorokina, Lubov S., additional, Avrusin, Ilya S., additional, Nikitina, Tatiana N., additional, Isupova, Eugenia A., additional, Chikova, Irina A., additional, Korin, Yuri Yu., additional, Orlova, Elizaveta D., additional, Snegireva, Ludmila S., additional, Masalova, Vera V., additional, Dubko, Margarita F., additional, Kalashnikova, Olga V., additional, and Chasnyk, Vyacheslav G., additional

Published
2022
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29. Measurements from inside a Thunderstorm Driven by Wildfire: The 2019 FIREX-AQ Field Experiment

Author

Peterson, David A., primary, Thapa, Laura H., additional, Saide, Pablo E., additional, Soja, Amber J., additional, Gargulinski, Emily M., additional, Hyer, Edward J., additional, Weinzierl, Bernadett, additional, Dollner, Maximilian, additional, Schöberl, Manuel, additional, Papin, Philippe P., additional, Kondragunta, Shobha, additional, Camacho, Christopher P., additional, Ichoku, Charles, additional, Moore, Richard H., additional, Hair, Johnathan W., additional, Crawford, James H., additional, Dennison, Philip E., additional, Kalashnikova, Olga V., additional, Bennese, Christel E., additional, Bui, Thaopaul P., additional, DiGangi, Joshua P., additional, Diskin, Glenn S., additional, Fenn, Marta A., additional, Halliday, Hannah S., additional, Jimenez, Jose, additional, Nowak, John B., additional, Robinson, Claire, additional, Sanchez, Kevin, additional, Shingler, Taylor J., additional, Thornhill, Lee, additional, Wiggins, Elizabeth B., additional, Winstead, Edward, additional, and Xu, Chuanyu, additional

Published
2022
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30. Heart Involvement in Multisystem Inflammatory Syndrome, Associated With COVID-19 in Children: The Retrospective Multicenter Cohort Data

Author

Kostik, Mikhail M., primary, Bregel, Liudmila V., additional, Avrusin, Ilia S., additional, Efremova, Olesya S., additional, Belozerov, Konstantin E., additional, Dondurei, Elena A., additional, Kornishina, Tatiana L., additional, Isupova, Eugenia A., additional, Abramova, Natalia N., additional, Felker, Eugeniy Yu, additional, Masalova, Vera V., additional, Santimov, Andrey V., additional, Kozlov, Yuri A., additional, Barakin, Alexander O., additional, Snegireva, Ludmila S., additional, Konstantinova, Julia, additional, Vilnits, Alla A., additional, Bekhtereva, Maria K., additional, Argunova, Vera M., additional, Matyunova, Alla E., additional, Sleptsova, Polina A., additional, Burtseva, Tatyana E., additional, Shprakh, Vladimir V., additional, Boyko, Tatyana V., additional, Kalashnikova, Olga V., additional, and Chasnyk, Vyacheslav G., additional

Published
2022
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31. The Safety and Efficacy of Tofacitinib in 24 Cases of Pediatric Rheumatic Diseases: Single Centre Experience

Author

Kostik, Mikhail M., primary, Raupov, Rinat K., additional, Suspitsin, Evgeny N., additional, Isupova, Eugenia A., additional, Gaidar, Ekaterina V., additional, Gabrusskaya, Tatyana V., additional, Kaneva, Maria A., additional, Snegireva, Ludmila S., additional, Likhacheva, Tatyana S., additional, Miulkidzhan, Rimma S., additional, Kosmin, Artem V., additional, Tumakova, Anastasia V., additional, Masalova, Vera V., additional, Dubko, Margarita F., additional, Kalashnikova, Olga V., additional, Aksentijevich, Ivona, additional, and Chasnyk, Vyacheslav G., additional

Published
2022
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36. Distinguishing Between Multisystem Inflammatory Syndrome, Associated With COVID-19 in Children and the Kawasaki Disease: Development of Preliminary Criteria Based on the Data of the Retrospective Multicenter Cohort Study

Author

Kostik, Mikhail M., primary, Bregel, Liudmila V., additional, Avrusin, Ilia S., additional, Dondurei, Elena A., additional, Matyunova, Alla E., additional, Efremova, Olesya S., additional, Isupova, Eugenia A., additional, Kornishina, Tatiana L., additional, Masalova, Vera V., additional, Snegireva, Ludmila S., additional, Shprakh, Vladimir V., additional, Kozlov, Yuri A., additional, Kalashnikova, Olga V., additional, and Chasnyk, Vyacheslav G., additional

Published
2021
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37. Monthly Global Estimates of Fine Particulate Matter and Their Uncertainty

Author

van Donkelaar, Aaron, primary, Hammer, Melanie S., additional, Bindle, Liam, additional, Brauer, Michael, additional, Brook, Jeffery R., additional, Garay, Michael J., additional, Hsu, N. Christina, additional, Kalashnikova, Olga V., additional, Kahn, Ralph A., additional, Lee, Colin, additional, Levy, Robert C., additional, Lyapustin, Alexei, additional, Sayer, Andrew M., additional, and Martin, Randall V., additional

Published
2021
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38. Resolving Vertical Profile of Cloud Condensation Nuclei Concentrations from Spaceborne Lidar Measurements.

Author

Patel, Piyushkumar N., Jiang, Jonathan H., Gautam, Ritesh, Gadhavi, Harish, Kalashnikova, Olga V., Garay, Michael J., Gao, Lan, Feng Xu, and Omar, Ali H.

Abstract

Cloud condensation nuclei (CCN) are mediators of aerosol-cloud interactions (ACI), contributing to the largest uncertainties in the understandings of global climate change. We present a novel remote sensing-based algorithm that quantifies the vertically-resolved CCN number concentrations (NCCN) using aerosol optical properties measured by a multiwavelength lidar. The algorithm considers five distinct aerosol subtypes with bimodal size distributions. The inversion used the look-up tables developed in this study, based on the observations from the Aerosol Robotic Network to efficiently retrieve optimal particle size distributions from lidar measurements. The method derives dry aerosol optical properties by implementing hygroscopic enhancement factors to lidar measurements. The retrieved optically equivalent particle size distributions and aerosol type dependent particle composition are utilized to calculate critical diameter using the κ-Köhler theory and NCCN at six supersaturations ranging from 0.07% to 1.0%. Sensitivity analyses indicate that uncertainties in extinction coefficients and relative humidity greatly influence the retrieval error in NCCN. The potential of this algorithm is further evaluated by retrieving NCCN using airborne lidar from the NASA ORACLES campaign and validated against simultaneous measurements from the CCN counter. The independent validation with robust correlation demonstrates promising results. Furthermore, the NCCN has been retrieved for the first time using a proposed algorithm from spaceborne lidar - Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) - measurements. The application of this new capability demonstrates the potential for constructing a 3D CCN climatology at a global scale, which help to better quantify ACI effects and thus reduce the uncertainty in aerosol climate forcing. [ABSTRACT FROM AUTHOR]

Published
2022
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39. Climatology of the Aerosol Optical Depth by Components from the Multi-Angle Imaging Spectroradiometer (MISR) and Chemistry Transport Models

Author

Lee, Huikyo, Kalashnikova, Olga V, Suzuki, Kentaroh, Braverman, Amy, Garay, Michael J, and Kahn, Ralph A

Subjects
Meteorology And Climatology, Earth Resources And Remote Sensing
Abstract

The Multi-angle Imaging Spectroradiometer (MISR) Joint Aerosol (JOINT_AS) Level 3 product has provided a global, descriptive summary of MISR Level 2 aerosol optical depth (AOD) and aerosol type information for each month over 16+ years since March 2000. Using Version 1 of JOINT_AS, which is based on the operational (Version 22) MISR Level 2 aerosol product, this study analyzes, for the first time, characteristics of observed and simulated distributions of AOD for three broad classes of aerosols: spherical nonabsorbing, spherical absorbing, and nonspherical - near or downwind of their major source regions. The statistical moments (means, standard deviations, and skew-nesses) and distributions of AOD by components derived from the JOINT_AS are compared with results from two chemistry transport models (CTMs), the Goddard Chemistry Aerosol Radiation and Transport (GOCART) and SPectral RadIatioN-TrAnSport (SPRINTARS). Overall, the AOD distributions retrieved from MISR and modeled by GOCART and SPRINTARS agree with each other in a qualitative sense. Marginal distributions of AOD for each aerosol type in both MISR and models show considerable high positive skewness, which indicates the importance of including extreme AOD events when comparing satellite retrievals with models. The MISR JOINT_AS product will greatly facilitate comparisons between satellite observations and model simulations of aerosols by type.

Published
2016
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40. Effects of COVID-19 lockdowns on fine particulate matter concentrations

Author

Hammer, Melanie S., primary, van Donkelaar, Aaron, additional, Martin, Randall V., additional, McDuffie, Erin E., additional, Lyapustin, Alexei, additional, Sayer, Andrew M., additional, Hsu, N. Christina, additional, Levy, Robert C., additional, Garay, Michael J., additional, Kalashnikova, Olga V., additional, and Kahn, Ralph A., additional

Published
2021
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43. Synergistic Use of Remote Sensing and Modeling for Estimating Net Primary Productivity in the Red Sea With VGPM, Eppley-VGPM, and CbPM Models Intercomparison

Author

Li, Wenzhao, primary, Tiwari, Surya Prakash, additional, El-Askary, Hesham Mohamed, additional, Qurban, Mohammed Ali, additional, Amiridis, Vassilis, additional, ManiKandan, K. P., additional, Garay, Michael J., additional, Kalashnikova, Olga V., additional, Piechota, Thomas C., additional, and Struppa, Daniele C., additional

Published
2020
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44. CALIPSO Observations of Transatlantic Dust: Vertical Stratification and Effect of Clouds

Author

Yang, Weidong, Marshak, Alexander, Varnai, Tamas, Kalashnikova, Olga V, and Kostinski, Alexander B

Subjects
Earth Resources And Remote Sensing, Meteorology And Climatology
Abstract

We use CALIOP nighttime measurements of lidar backscatter, color and depolarization ratios, as well as particulate retrievals during the summer of 2007 to study transatlantic dust properties downwind of Saharan sources, and to examine the influence of nearby clouds on dust. Our analysis suggests that (1) under clear skies, while lidar backscatter and color ratio do not change much with altitude and longitude in the Saharan Air Layer (SAL), depolarization ratio increases with altitude and decreases westward in the SAL (2) the vertical lapse rate of dust depolarization ratio, introduced here, increases within SAL as plumes move westward (3) nearby clouds barely affect the backscatter and color ratio of dust volumes within SAL but not so below SAL. Moreover, the presence of nearby clouds tends to decrease the depolarization of dust volumes within SAL. Finally, (4) the odds of CALIOP finding dust below SAL next to clouds are about of those far away from clouds. This feature, together with an apparent increase in depolarization ratio near clouds, indicates that particles in some dust volumes loose asphericity in the humid air near clouds, and cannot be identified by CALIPSO as dust.

Published
2014

47. MISR Decadal Observations of Mineral Dust: Property Characterization and Climate Applications

Author

Kalashnikova, Olga V, Garay, Michael J, Sokolik, Irina, Kahn, Ralph A, Lyapustin, A, Diner, David J, Lee, Jae N, Torres, Omar, Leptoukh, Gregory G, and Sabbah, Ismail

Subjects
Earth Resources And Remote Sensing
Abstract

The Multi-angle Imaging SpectroRadiometer (MISR) provides a unique, independent source of data for studying dust emission and transport. MISR's multiple view angles allow the retrieval of aerosol properties over bright surfaces, and such retrievals have been shown to be sensitive to the non-sphericity of dust aerosols over both land and water. MISR stereographic views of thick aerosol plumes allow height and instantaneous wind derivations at spatial resolutions of better than 1.1 km horizontally and ~200m vertically. We will discuss the radiometric and stereo-retrieval capabilities of MISR specifically for dust, and demonstrate the use of MISR data in conjunction with other available satellite observations for dust property characterization and climate studies.First, we will discuss MISR non-spherical (dust) fraction product over the global oceans. We will show that over the Atlantic Ocean, changes in the MISR-derived non-spherical AOD fraction illustrate the evolution of dust during transport. Next, we will present a MISR satellite perspective on dust climatology in major dust source regions with a particular emphasis on the West Africa and Middle East and discuss MISR's unique strengths as well as current product biases. Finally, we will discuss MISR dust plume product and climatological applications.

Published
2012

50. Global Estimates and Long-Term Trends of Fine Particulate Matter Concentrations (1998–2018)

Author

Hammer, Melanie S., primary, van Donkelaar, Aaron, additional, Li, Chi, additional, Lyapustin, Alexei, additional, Sayer, Andrew M., additional, Hsu, N. Christina, additional, Levy, Robert C., additional, Garay, Michael J., additional, Kalashnikova, Olga V., additional, Kahn, Ralph A., additional, Brauer, Michael, additional, Apte, Joshua S., additional, Henze, Daven K., additional, Zhang, Li, additional, Zhang, Qiang, additional, Ford, Bonne, additional, Pierce, Jeffrey R., additional, and Martin, Randall V., additional

Published
2020
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