- UHRA Home
- Browsing by Author
Browsing by Author "Mueller, Detlef"
Now showing items 1-20 of 21
-
3+2 + X: what is the most useful depolarization input for retrieving microphysical properties of non-spherical particles from lidar measurements using the spheroid model of Dubovik et al. (2006)?
Tesche, Matthias; Kolgotin, Alexei; Haarig, Moritz; Burton, Sharon P.; Ferrare, Richard A.; Hostetler, Chris A.; Mueller, Detlef (2019-08-19)The typical multiwavelength aerosol lidar data set for inversion of optical to microphysical parameters is composed of three backscatter coefficients (β) at 355, 532, and 1064 nm and two extinction coefficients (α) at 355 ... -
Aerosol-type classification based on AERONET version 3 inversion products
Shin, Sung-Kyun; Tesche, Matthias; Mueller, Detlef; Now, Youngmin (2019-07-11)This study proposes an aerosol-type classification based on the particle linear depolarization ratio (PLDR) and single-scattering albedo (SSA) provided in the AErosol RObotic NETwork (AERONET) version 3 level 2.0 inversion ... -
Automated, unsupervised inversion of multiwavelength lidar data with TiARA : Assessment of retrieval performance of microphysical parameters using simulated data
Mueller, Detlef; Chemyakin, Eduard V.; Kolgotin, Alexei V.; Ferrare, Richard A.; Hostetler, Chris A.; Romanov, A. (2019-06-18)We evaluate the retrieval performance of the automated, unsupervised inversion algorithm, Tikhonov Advanced Regularization Algorithm (TiARA), which is used for the autonomous retrieval of microphysical parameters of ... -
British and Korean Lidars for Atlid Validation (BAKLAVA)
Tesche, Matthias; Tatarov, Boyan; Mueller, Detlef; Noh, Youngmin; Shin, Sung-Kyun (2018-06-11)Measurements with two unique spectrometric aerosol Raman lidars located in the United Kingdom (51.75 °N; 0.24 °W) and the Republic of Korea (35.23 °N;126.84 °E) will be conducted during EarthCARE overpasses to validate the ... -
Depolarization Ratios Retrieved by AERONET Sun/Sky Radiometer Data and Comparison to Depolarization Ratios Measured With Lidar
Mueller, Detlef; Noh, Youngmin; Lee, Kyunghwa; Kim, Kwanchul; Lee, KwonHo; Shimizu, Atsushi; Kim, Sang-Woo; Sano, Itaru; Park, Chan Bong (2017-05-22)The linear particle depolarization ratios at 440, 675, 870, and 1020 nm were derived using data taken with the AERONET sun–sky radiometer at Seoul (37.45° N, 126.95° E), Kongju (36.47° N, 127.14° E), Gosan (33.29° N, ... -
HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: : an intercomparison study
Mueller, Detlef; Sawamura, Patricia; Moore, Richard H.; Burton, Sharon P.; Chemyakin, Edward; Kolgotin, Alexei; Ferrare, Richard A.; Hostetler, Chris A.; Ziemba, Luke D.; Beyersdorf, Andreas J.; Anderson, Bruce E. (2017-06-16)We present a detailed evaluation of remotely-sensed aerosol microphysical properties obtained from an advanced, multi-wavelength High Spectral Resolution Lidar (HSRL-2) during the 2013 NASA DISCOVER-AQ field campaign. ... -
Identification of Atmospheric Mineral Dust Composition from Raman-Scattering Spectra
Mueller, Detlef; Tatarov, Boyan; Tesche, Matthias; Shin, Sung-Kyun (2018-08-26) -
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 1: theory
Kolgotin, Alexei; Mueller, Detlef; Chemyakin, Eduard V.; Romanov, A. (2016-11-30)Multiwavelength Raman/high spectral resolution lidars that measure backscatter coefficients at 355, 532, and 1064 nm and extinction coefficients at 355 and 532 nm can be used for the retrieval of particle microphysical ... -
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 2: Simulations with synthetic optical data
Kolgotin, Alexei; Mueller, Detlef; Chemyakin, Eduard V.; Romanov, A. (2016-11-30)We developed a mathematical scheme that allows us to improve retrieval products obtained from the inversion of multiwavelength Raman/HSRL lidar data, commonly dubbed “3 backscatter 2 extinction” (3β 2α) lidar. This scheme ... -
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 3: Case studies
Kolgotin, Alexei; Mueller, Detlef; Chemyakin, Eduard V.; Romanov, A.; Alehnovich, Valentin (2018-03-27)We conclude our series of publications on the development of the gradient correlation method (GCM) which can be used for an improved stabilization of the solution space of particle microphysical parameters derived from ... -
Influence of the vertical absorption profile of mixed Asian dust plumes on aerosol direct radiative forcing over East Asia
Noh, Y. M.; Lee, KwonHo; Shin, Sungkyun; Kim, Kwanchul; Mueller, Detlef (2016-08-01)We estimate the aerosol direct radiative forcing (ADRF) and heating rate profiles of mixed East Asian dust plumes in the solar wavelength region ranging from 0.25 to 4.0 μm using the Santa Barbara Discrete Ordinate Atmospheric ... -
LIDAR SPRECTROSCOPY INSTRUMENT(LISSI):AN INFRASTRUCTURE FACILITY FOR CHEMICAL AEROSOL PROFILING AT THE UNIVERSITY OF HERTFORDSHIRE
Tesche, Matthias; Tatarov, Boyan; Noh, Youngmin; Mueller, Detlef (2018-04-13)The lidar development at the University of Hertfordshire explores the feasibility of using Raman backscattering for chemical aerosol profiling. This paper provides an overview of the new facility. A high-power Nd:YAG/OPO ... -
LITES: Rotational Raman Spectra of Air Molecules Measured by High-Resolution-Spectroscopy Lidar
Tatarov, Boyan; Mueller, Detlef (2021-10-11)We present first measurement from a new lidar facility that has been designed and built at the University of Hertforshire since 2012. LITES (Lidar Innovations for Technologies and Environmental Sciences) allows for testing, ... -
Measurement report: Balloon-borne in-situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter
Kezoudi, Maria; Tesche, Matthias; Smith, Helen; Ulanowski, Zbigniew; Amiridis, Vassilis; Mueller, Detlef; Weinzierl, Bernadett; Tsekeri, Alexandra; Baars, Holger; Dollner, Maximilian; Estellés, Víctor; Bühl, Johannes (2021-05-05)This paper presents measurements of mineral dust concentration in the diameter range from 0.4 to 14.0 μm with a novel balloon-borne optical particle counter, the Universal Cloud and Aerosol Sounding System (UCASS). The ... -
On the spectral depolarisation and lidar ratio of mineral dust provided in the AERONET version 3 inversion product
Shin, Sung-Kyun; Tesche, Matthias; Kim, Kwanchul; Kezoudi, Maria; Tatarov, Boyan; Mueller, Detlef; Noh, Youngmin (2018-09-04)Knowledge of the particle lidar ratio (Sγ) and the particle linear depolarisation ratio (δγ) for different aerosol types allows for aerosol typing and aerosol-Type separation in lidar measurements. Reference values generally ... -
Optical and microphysical characterization of aerosol layers over South Africa by means of multi-wavelength depolarization and Raman lidar measurements
Giannakaki, Eleni; von Zyl, P. G.; Mueller, Detlef; Balis, D.; Komppula, M. (2016-07-05)Optical and microphysical properties of different aerosol types over South Africa measured with a multi-wavelength polarization Raman lidar are presented. This study could assist in bridging existing gaps relating to aerosol ... -
Technical note: Absorption aerosol optical depth components from AERONET observations of mixed dust plumes
Shin, Sung-Kyun; Tesche, Matthias; Mueller, Detlef; Noh, Youngmin (2019-01-30)Absorption aerosol optical depth (AAOD) as obtained from sun–sky photometer measurements provides a measure of the light-absorbing properties of the columnar aerosol loading. However, it is not an unambiguous aerosol-type-specific ... -
Utilization of the depolarization ratio derived by AERONET Sun/sky radiometer data for type confirmation of a mixed aerosol plume over East Asia
Noh, Y. M.; Shin, Sungkyun; Lee, KwonHo; Mueller, Detlef; Kim, Kwanchul (2016-04-24)This article confirms the utilization of depolarization ratio derived by ground-based Aerosol Robotic Network (AERONET) Sun/sky radiometer data obtained during a high-PM10 episode at Gwangju, Korea (35.10° N, 126.53° E) ... -
Variation of the vertical distribution of Nabro volcano aerosol layers in the stratosphere observed by LIDAR
Noh, Youngmin; Shin, Dong-Ho; Mueller, Detlef (2017-04-01)We present results of the vertical distribution variation of volcanic aerosol layers in the upper troposphere and lower stratosphere. The data were taken with our multiwavelength aerosol Raman lidar at Gwangju (35.10 N, ... -
Vertical Resolved Dust Mass Concentration and Backscatter Coefficient Retrieval of Asian Dust Plume Using Quartz Raman Channel in Lidar Measurements
Noh, Young M.; Mueller, Detlef; Shin, Sungkyun (Les Ulis: EDP Sciences, 2016-06-07)In this work, we present a method for estimating vertical resolved mass concentration of dust immersed in Asian dust plume using Raman scattering of quartz (silicon dioxide, silica). During the Asian dust period of March ...