A5032025437- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Geophysics and Gravity Measurements
- Aeolian processes and effects
- Precipitation Measurement and Analysis
- Ecology and Vegetation Dynamics Studies
- Cryospheric studies and observations
- Animal Ecology and Behavior Studies
- Atmospheric Ozone and Climate
- Labor market dynamics and wage inequality
- Icing and De-icing Technologies
- Inertial Sensor and Navigation
- Remote Sensing and LiDAR Applications
- Planetary Science and Exploration
- Remote Sensing in Agriculture
- Air Quality Monitoring and Forecasting
- Wildlife Ecology and Conservation
- Plant and animal studies
- Healthcare Systems and Reforms
- Forest ecology and management
- Fire effects on ecosystems
- Childhood Cancer Survivors' Quality of Life
- Astronomical Observations and Instrumentation
Tohoku University
1984-2025
Kyushu University
2014-2024
National Cancer Center Hospital East
2023
Kokushikan University
2019
Beijing Research Institute of Automation for Machinery Industry (China)
2017-2018
Duke University
2015-2016
Duke Institute for Health Innovation
2015-2016
Institute of Applied Mechanics
2014-2015
Nagaoka University of Technology
2015
Tokyo Metropolitan University
2013
Abstract The collective representation within global models of aerosol, cloud, precipitation, and their radiative properties remains unsatisfactory. They constitute the largest source uncertainty in predictions climatic change hamper ability numerical weather prediction to forecast high-impact events. joint European Space Agency (ESA)–Japan Aerospace Exploration (JAXA) Earth Clouds, Aerosol Radiation Explorer (EarthCARE) satellite mission, scheduled for launch 2018, will help resolve these...
The impact of the unusually severe drought associated with 1997–1998 El Niño on tropical forest dynamics in Sarawak, Malaysia was examined. Mortality during non-drought period (1993–1997) a core plot (1.38 ha) 0.89 % y −1 , while that (1997–1998) same and peripheral 6.37 4.35 respectively. basal area lost interval 3.4 times annual incremental 1993–1997. Drought mortality higher for smaller trees, though it less size dependent than mortality. Dipterocarpaceae, which is dominant family study...
Secondary cell walls, which contain lignin, have traditionally been considered essential for the mechanical strength of shoot land plants, whereas pectin, is a characteristic component primary wall, not to be involved in support plant. Contradicting this conventional knowledge, loss-of-function mutant alleles Arabidopsis thaliana PECTIN METHYLESTERASE35 (PME35), encodes pectin methylesterase, showed pendant stem phenotype and an increased deformation rate stem, indicating that was impaired...
Although the prior literature has examined relationship between work schedule characteristics and worker mental health, establishing causal effect of is challenging because endogeneity issues. This paper investigates how various affect workers' health using employee surveys actual working hours recorded over seventeen months in a Japanese manufacturing company. Our sample includes 1334 white-collar workers 786 blue-collar observed from 2015 to 2016. major findings are as follows: long cause...
Abstract Vertical profiles of ice water content (IWC) can now be derived globally from spaceborne cloud satellite radar (CloudSat) data. Integrating these data with Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) may further increase accuracy. Evaluations the accuracy IWC retrieved alone together other measurements are essential. A forward model employing aircraft Lagrangian spiral descents through mid- low-latitude clouds is used to estimate what a lidar...
We developed a new radar‐lidar algorithm that can be applied to CloudSat and Cloud‐Aerosol Lidar Infrared Pathfinder Satellite Observations (CALIPSO) data retrieve ice microphysics. The analyzes the specular reflection of lidar signals often observed by CALIPSO with large backscattering coefficients small depolarization ratios. Analyses our former showed problems retrieving cloud microphysics when was present. implemented additional look‐up tables for horizontally oriented plates. A mode in...
The backscattering optical properties of an ensemble randomly oriented dust particles at a wavelength 355 nm were comprehensively studied by examining the invariant imbedding T-matrix results super-spheroid model. In particular, we focused on lidar ratio ( S ) and depolarization δ relations aerosols to aid interpretation data from Atmospheric Lidar (ATLID) instrument that will be onboard Earth Cloud, Aerosol Radiation Explorer (EarthCARE) satellite. Super-spheroid models with various aspect...
This study examined the vertical cloud structure over tropical western Pacific Ocean using 95‐GHz radar and lidar data observed from September to December 2001 during MR01‐K05 cruise of research vessel Mirai . The was homogeneous between 6 10 km, maximum occurrence 20% located at 12 km. mean precipitation 11.5% 1 fraction, reflectivity factor, backscattering coefficient were simulated along track output Center for Climate System Research, University Tokyo; National Institute Environmental...
[1] This work improved on the lidar and radar retrieval algorithm developed by Okamoto et al. to extend applicability of microphysical scheme from cloud region with lidar-radar overlap lidar- or radar-only regions an available radar-lidar area in vertical profile use Levenberg-Marqardt method. The was formulated efficiently reflect information at radar- lidar-only avoid a prescribed parameterization among observables microphysics. incorporated particle-type discrimination before retrieval,...
Background/Objectives: The global nursing shortage encompasses issues such as the uneven nurse distribution in low- and middle-income countries, outflow to other retirement developed necessitating effective retention strategies. Our objective was clarify changes facility selection reasons among Japanese nurses after changing jobs personal attributes influencing selection. Methods: In January 2023, an online survey conducted licensed practical nurses, registered midwives, public health Japan....
Abstract. This study introduces the primary products and features of active-sensor-based Level 2 cloud microphysics Japanese Aerospace Exploration Agency (JAXA; i.e., radar standalone product (CPR_CLP), radar–lidar synergy (AC_CLP), radar–lidar–imager (ACM_CLP)). Combined with 94 GHz Doppler profiling (CPR), 355 nm high-spectral-resolution lidar (Atmospheric Lidar, ATLID) Multi-Spectral Imager (MSI), these provide a detailed view transitions particle categories their size distributions....
Tuberculosis (TB) patients in China encounter heavy financial burdens throughout the course of their treatment and it is unclear how China's health insurance systems affect alleviation this burden under integrated approach. This study aimed to measure reimbursement for TB services New Cooperative Medical Scheme (NCMS) rural evaluate changes catastrophic expenditure (CHE) caused by policies.Reimbursement data were obtained from routine NCMS Yichang (YC) Hanzhong (HZ). 1884 inpatients...
The backscattering coefficient (β), lidar ratio (S), and depolarization (δ) of ice particles were estimated over a wide range effective radii to interpret spaceborne 355-nm high-spectral-resolution data from the ATLID sensor onboard EarthCARE satellite. Five randomly oriented particle shapes (3D ice) two quasi-horizontally types (2D analyzed using five angles. size dependence β, S, δ was examined physical optics geometrical integral equation methods. Differences in β for same radius water...
We investigated the use of backscatter properties atmospheric ice particles for space-borne lidar applications. estimated average backscattering coefficient ( β ), color ratio χ and depolarization δ ) with a wide range effective radii five randomly oriented three-dimensional (3D) three quasi-horizontally two-dimensional (2D) types particle using physical optics geometrical integral equation methods. This is first study to estimate non-pristine crystals. found that – relationship was useful...
Abstract A more accurate representation of ice‐phase processes in numerical models necessitates an enhanced understanding ice‐particle microphysics and their respective formation conditions. Prior situ measurements have noted distinctive shape characteristics associated with different cloud systems geographical locations. The recent advancement backscattering theories enables a comprehensive exploration the distribution seasonal dependence categories than ever before. This is being...
Effect of density, shape, and orientation on radar reflectivity factor ( Z e ) linear depolarization ratio LDR at 95 GHz are investigated by using the discrete dipole approximation (DDA) for ice cloud studies. We consider hexagonal plate, hollow column, bullet rosette in horizontal (2‐D) or three‐dimensional (3‐D) random orientation. first validate a widely used method to take into account density shape effects combinational use Mie theory with Maxwell‐Garnett mixing rule (the MG‐Mie...
[1] The Japanese lunar mission, Selenological and Engineering Explorer (Kaguya), which was successfully launched on 14 September 2007, consists of a main satellite two small satellites, Rstar Vstar. Same-beam very long baseline interferometry (VLBI) observations Vstar were performed for 15.4 months from November 2007 to February 2009 using eight VLBI stations. In 2008, S band same-beam totaling 476 h 179 days undertaken. differential phase delays estimated most (about 85%) the observation...
Human-to-human transmission of PA I38 mutant influenza A(H3N2) viruses with reduced baloxavir susceptibility has been reported in Japan. In December 2019, we detected a E23K A(H1N1)pdm09 virus from child without treatment. The exhibited but remained susceptible to neuraminidase inhibitors. Epidemiological data suggest possible this among humans, although its growth capability relative that the wild-type was reduced. Therefore, monitoring is essential.
Abstract. Algorithms were developed to produce ATLID (Atmospheric Lidar) L2 aerosol products using L1 data. The algorithms estimated the following four products: (1) Layer identifiers such as aerosols, clouds, clear-skies, or surfaces (feature masks) by combined use of vertically variable criteria and spatial continuity methods for CALIOP (Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observation) analysis. (2) Aerosol optical properties extinction coefficient, backscatter depolarization...
Abstract We developed a method for classifying hydrometeor particle types, including cloud and precipitation phase ice crystal habit, by synergistic use of CloudSat/Cloud Profiling Radar (CPR) Cloud‐Aerosol Lidar Infrared Pathfinder Satellite Observations (CALIPSO)/Cloud‐Aerosol LIdar with Orthogonal Polarization (CALIOP). investigated how the habit characterized CALIOP globally relate radar reflectivity temperature. The global relationship thus identified was employed to develop an...
We developed a multiple-field-of-view multiple-scattering polarization lidar (MFMSPL) to study the microphysics of optically thick clouds. Designed measure enhanced backscattering and depolarization ratio comparable space-borne lidar, system consists four sets parallel perpendicular channels mounted with different zenith angles. Depolarization ratios from water clouds were large as observed by MFMSPL compared those conventional lidar. Cloud top heights tended be larger for outer than...
A physical model was extended with a polarization function to create vectorized (VPM) analyze the vertical profile of observed depolarization ratio due multiple scattering from water clouds by space-borne lidar. The ratios single scattering, on-beam and pulse stretching mechanisms are treated separately in VPM. VPM also includes high-order matrix accommodates that modify state during processes. estimated showed good agreement Monte Carlo simulations, mean relative error about 2% ± 3%.
A practical model for determining the time-dependent lidar attenuated backscattering coefficient β was developed application to global data. An analytical expression high-order phase function introduced reduce computational cost simulating angular distribution of multiple scattering irradiance. The decay rate backscattered irradiance expressed by incorporating dependence on angle and order based path integral approach. estimated over time actual range showed good agreement with Monte Carlo...
China has recently adopted the "TB designated hospital model" to improve quality of tuberculosis (TB) treatment and patient management. Considering that inpatient service often results in high financial burden, therefore influences adherence treatment, it is critical better understand TB admission rate cost, as well their influential factors this new model. Quantitative qualitative studies were conducted two cities, Hanzhong Shaanxi Province Zhenjiang Jiangsu Province, China. data obtained...