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i org 10 5194 amt 19 6487 2026 https doi org 10 5194 amt 19 6487 2026 2026 short summary short summary a global network of ground based instruments has been using moonlight to measure atmospheric aerosols at night producing the world s largest such dataset employing an empirical correction method that accounts for the moon s complex and variable brightness results in nighttime measurements that agree closely with daytime measurements during day night transition intervals under stable aerosol conditions hide 14 oct 2026 atmospheric co 2 and ch 4 measurements at schauinsland station germany a comparative study of diurnal and seasonal variations at 12 and 35 m intake height julian großmann frank meinhardt antje hoheisel bryan hellack and martina schmidt atmos meas tech 19 6469 6485 https doi org 10 5194 amt 19 6469 2026 https doi org 10 5194 amt 19 6469 2026 2026 short summary short summary long term measurements of atmospheric co 2 have been conducted at schauinsland station in southwest germany since 1972 in order possibly to relocate the air intake line from 12 m to 35 m above ground we compared three years of parallel co 2 and ch 4 measurements we find systematic differences in diurnal and seasonal variations for co 2 but not for ch 4 the results of our study indicate that measurements should be taken at both heights to ensure consistency with historical records hide 14 oct 2026 spectral signatures of zenith sky radiance from surface based sky radiometers implications for clear and cloudy sky detection pradeep khatri hitoshi irie hiroshi kobayashi isamu morino yoshitaka jin tadahiro hayasaka hironobu iwabuchi tamio takamura and yoshiki takayama atmos meas tech 19 6447 6467 https doi org 10 5194 amt 19 6447 2026 https doi org 10 5194 amt 19 6447 2026 2026 short summary short summary this study investigates the spectral characteristics of zenith sky radiances under clear and cloudy sky conditions using skynet sky radiometer observations it proposes a simple physically interpretable method for distinguishing sky states and demonstrates that wavelength dependent radiance information can support reliable sky state detection across diverse atmospheric environments hide 14 oct 2026 cloud height dependent cloud aerosol state classification based on max doas observations in a coastal region and validation using lidar measurements luyao wu liang xi xin zhao yuhan luo yibin fu runze song minjie zhao and fuqi si egusphere https doi org 10 5194 egusphere 2026 2951 https doi org 10 5194 egusphere 2026 2951 2026 preprint under review for amt discussion open 0 comments short summary short summary this study proposes a cloud detection and classification method based on ground based multi axis differential optical absorption spectroscopy observations with cloud height considered the method was applied to one year of observations in a coastal city the resulting cloud classification showed good consistency with independent lidar observations supporting more reliable use of long term atmospheric monitoring data hide 13 oct 2026 the proof of concept for raindrop size distribution retrieval using combined dual frequency radar dfr liang feng jiefan yang zeyong guo jiming sun yue sun huiling yang and xiangfeng hu atmos meas tech 19 6395 6414 https doi org 10 5194 amt 19 6395 2026 https doi org 10 5194 amt 19 6395 2026 2026 short summary short summary the dual frequency radar can retrieve raindrop size distribution but causes ambiguity between dual frequency ratio and raindrop diameter for small drops to solve this our study added a third radar frequency using scattering simulations based on real raindrop observations we established clear links between different dual frequency ratio and raindrop size results show the ambiguity is greatly reduced and our method outperforms conventional ones especially in light rain detection hide 13 oct 2026 new operational perspective to identify aerosols and hydrometeors in real time with a pioneering algorithm coniopol based on single wavelength polarization lidar cl61 quentin laffineur alexander mangold and andy w delcloo atmos meas tech 19 6415 6446 https doi org 10 5194 amt 19 6415 2026 https doi org 10 5194 amt 19 6415 2026 2026 short summary short summary coniopol coniology polarization is a new algorithm for continuous real time classification of aerosols and hydrometeors using a single wavelength polarization enabled automatic lidar applied to one year of cl61 observations in belgium it provides physically consistent aerosol typing and seasonal patterns comparisons with cams copernicus atmosphere monitoring service and sensitivity tests support its potential for operational monitoring and long term aerosol climatology hide 13 oct 2026 assessment of the pace spexone aerosol layer height alh retrievals and intercomparison with earthcare atlid observations kalliopi artemis voudouri andreas karipis alexandra tsekeri otto hasekamp kirk knobelspiesse meng gao santiago gasso gerd jan van zadelhoff athanasios tsikerdekis guangliang fu anton lopatin oleg dubovik edward malina eleni marinou and vassilis amiridis egusphere https doi org 10 5194 egusphere 2026 5990 https doi org 10 5194 egusphere 2026 5990 2026 preprint under review for amt discussion open 0 comments short summary short summary this study evaluates two satellite based methods for retrieving aerosol layer height using observations from the pace and earthcare missions we assess the consistency of their retrievals under different atmospheric conditions and across diverse regions identifying when they agree best and highlighting the strengths and limitations of each approach the results support the validation of these missions which are expected to provide long term observations for reliable climate data records hide 13 oct 2026 direct methane measurements in a coal mine ventilation shaft instrument intercomparison and emission estimates yaroslav bezyk adrian góra dawid szurgacz jakub bartyzel paweł jagoda justyna swolkień maciej górka robert field and jarosław nęcki egusphere https doi org 10 5194 egusphere 2026 5118 https doi org 10 5194 egusphere 2026 5118 2026 preprint under review for amt discussion open 0 comments short summary short summary coal mines are among the major anthropogenic sources of methane but direct long term measurements of emissions remain limited in this study ch 4 concentration was continuously measured for one year in a coal mine ventilation shaft in poland and compared with the mine s standard monitoring system the results showed strong links between methane emissions and mining activity and demonstrated that improved monitoring can reduce uncertainty in greenhouse gas inventories hide 12 oct 2026 long duration shipboard performance of a humidity conditioned optical particulate matter monitor along inter polar transit routes antarctic inter unit agreement and arctic redeployment myunghee son and sung hoon baek egusphere https doi org 10 5194 egusphere 2026 5333 https doi org 10 5194 egusphere 2026 5333 2026 preprint under review for amt discussion open 0 comments short summary short summary we evaluated two low power humidity conditioned optical pm monitors tam tac aboard the icebreaker araon during antarctic and arctic transits active sample drying maintained sample rh below 40 yielding outstanding inter unit agreement r 2 0 99 slope 0 99 1 01 across pm fractions the system proved highly stable and reliable under extreme polar marine conditions hide 12 oct 2026 the enhanced capabilities of mid infrared limb emission sounding to observe stratospheric aerosol injection geoengineering pasquale sellitto mona kosary michael höpfner bernd funke alex hoffmann jörn ungermann quentin errera simone tilmes and björn martin sinnhuber atmos meas tech 19 6379 6393 https doi org 10 5194 amt 19 6379 2026 https doi org 10 5194 amt 19 6379 2026 2026 short summary short summary to counterbalance human caused global warming highly controversial geoengineering techniques based on stratospheric aerosol injection sai have been proposed as a complement to climate change mitigation possible unilateral sai deployments or tests are a risk we show that existing satellite instruments do not have the capability to detect unilateral sai experiments and we propose a future satellite technique infrared limb emission sounding that can provide this missing capability hide 12 oct 2026 the nasa aerosol wind profiler doppler wind lidar part ii airborne flight demonstration kristopher bedka konstantin khlopenkov john cooney john marketon samantha applin seth begay maurice cross sammy henderson aboubakar traore and frederick g wilson egusphere https doi org 10 5194 egusphere 2026 6111 https doi org 10 5194 egusphere 2026 6111 2026 preprint under review for amt discussion open 0 comments short summary short summary nasa langley research center flew the aerosol wind profiler awp doppler wind lidar during two missions in fall 2024 to demonstrate awp s 3 d wind profile measurements and its utility for studying the planetary boundary layer this paper demonstrates awp measurements from several nasa gulfstream iii flights comparison with dropsonde wind profile measurements and comparison with noaa global forecast system model analyses and forecasts hide 09 oct 2026 development and application of an analytical method for the quantification of tire wear in atmospheric deposition md atiur rahman ralf kaegi and christoph hueglin egusphere https doi org 10 5194 egusphere 2026 5039 https doi org 10 5194 egusphere 2026 5039 2026 preprint under review for amt discussion open 0 comments short summary short summary tire wear particles twp are environmental pollutants of growing concern we developed an analytical method for twp because no standardized reference method is currently available and there is a clear need for robust and reliable techniques to quantify tire wear particles in environmental samples the proposed method is based on pyrolysis gas chromatography mass spectrometry py gc ms and uses multiple pyrolysis products that are characteristic of the main rubber polymers used in tires hide 09 oct 2026 identification of cloud droplets ice crystals and aerosols using ground based fog and aerosol spectrometer chamber experiments and field observations yuchen jiang yuan wang qiudi xu zhao ji ping zhang yang wang hao wu zhiliang shu weiyuan zhang xinyi wang and jiming li egusphere https doi org 10 5194 egusphere 2026 6076 https doi org 10 5194 egusphere 2026 6076 2026 preprint under review for amt discussion open 0 comments short summary short summary distinguishing aerosols droplets and ice crystals in mixed phase clouds is challenging yet vital for cloud research this work presents a ground based particle classification method validated by lab and mountain field tests using combined parameters it separates these particles with high accuracy and handles overlapping signals this temperature independent tool quantifies cloud freezing and aids cloud and climate studies hide 09 oct 2026 the versatile atmospheric laser doppler instrument valdi a single fizeau interferometer and imaging detector for simultaneous wind speed temperature and scattering ratio measurements from molecular and aerosol scattering michael vaughan kevin ridley oliver reitebuch and benjamin witschas egusphere https doi org 10 5194 egusphere 2026 5744 https doi org 10 5194 egusphere 2026 5744 2026 preprint under review for amt discussion open 0 comments short summary short summary we investigate a new space based lidar concept for measuring atmospheric winds aerosol levels and temperature at the same time using computer modelling and experience from the aeolus mission we assess whether one optical receiver could provide all these measurements the results show that the concept has the potential to deliver accurate atmospheric observations from space offering a compact approach for future earth observation missions hide 08 oct 2026 polarimetric qpe with an x band radar on the northwest coast of peru a ray coherence diagnostic and a reliability weighted specific attenuation estimator ivan herrera casas rodolfo rodriguez carlos del castillo nilson diaz and yamina silva egusphere https doi org 10 5194 egusphere 2026 5056 https doi org 10 5194 egusphere 2026 5056 2026 preprint under review for amt discussion open 3 comments short summary short summary rainfall estimates from a new x band radar in piura peru were calibrated with local raindrop measurements removing a 26 overestimation attenuation based estimates then showed streak like errors along individual radar rays that daily rain gauges cannot detect we built a diagnostic that measures these streaks from the radar data alone and used it to design an estimator that weights each ray by how reliable its phase measurement is cutting the contamination by a factor of about 2 5 hide 08 oct 2026 uv index monitoring and forecasting in cyprus the effect of ozone aerosols and clouds georgia charalampous konstantinos fragkos ilias fountoulakis kyriakoula papachristopoulou anna moustaka argyro nisantzi diofantos hadjimitsis and stelios kazadzis egusphere https doi org 10 5194 egusphere 2026 6018 https doi org 10 5194 egusphere 2026 6018 2026 preprint under review for amt discussion open 0 comments short summary short summary cyprus has very high levels of ultraviolet radiation from the sun so reliable daily forecasts help people protect their health we compared two forecasting systems with measurements from five stations across the island both worked well on clear days but were less accurate when clouds were present during a wildfire in july 2025 smoke cut the measured ultraviolet levels by about 40 percent which the forecasts missed better cloud and smoke information is needed to improve forecasts hide 08 oct 2026 bridging temporal resolution and molecular specificity with a compact gc ptr for the measurement of volatile organic compounds megan s claflin felipe lopez hilfiker urs rohner vasyl yatsyna brian m lerner joel thornton douglas worsnop manjula canagaratna and john jayne egusphere https doi org 10 5194 egusphere 2026 6002 https doi org 10 5194 egusphere 2026 6002 2026 preprint under review for amt discussion open 0 comments short summary short summary measurement of volatile organic compounds in diverse environments is important to understand changing emissions and their impact on health and climate we present a measurement system that is compact low power and provides both high time resolution and molecularly resolved data this system enables simpler deployment operation and analysis while providing a path toward meaningful measurements at long term monitoring sites on mobile platforms and in locations where resources are limited hide 08 oct 2026 bias assessment and random forest based correction of temperature observations from the level drift phase of ascent drift descent radiosonde system xiaojuan yao qiyun guo xin sun jincheng wang yanxia ji linchun ...