Results 31 to 40 of about 5,576 (50)

Greenhouse gas measurement campaign of the Earth Summit Mission-2022: ground-based in situ and FTIR observations and contribution to satellite validation in the Qomolangma region [PDF]

Atmospheric Measurement Techniques
The Qinghai–Tibetan Plateau (QTP) is a key system that impacts the global carbon balance, but greenhouse gas (GHG) mole fraction measurements in this region are limited due to the tough environment.
M. Zhou, M. Zhou, Y. Wang, Y. Wang, M. Duan, M. Duan, X. Tian, X. Tian, J. Ding, J. Ding, J. Bi, Y. Ma, Y. Ma, W. Ma, W. Ma, Z. Xi, Z. Xi   +16 more
doaj   +1 more source

Continuous chemical characterization of ultrafine particulate matter (PM_0.1) [PDF]

Atmospheric Measurement Techniques
Ultrafine particles (diameter of less than 100 nm) are primary suspects for enhanced negative health effects on humans. Measuring the chemical composition and physical properties of ultrafine particles online, continuously, and accurately is particularly
G. A. Argyropoulou, G. A. Argyropoulou, K. Florou, S. N. Pandis, S. N. Pandis   +4 more
doaj   +1 more source

Comparison of total ozone measurements in Melbourne, Australia, performed with a low-cost micro spectrometer and a Brewer MK-III [PDF]

Atmospheric Measurement Techniques
A new design for a simple and very low-cost instrument for measuring total column ozone is described and its performance evaluated by comparison to a co-located MK III Brewer spectrophotometer for approximately 6 months.
K. Edvardsen, M. Tully, S. Rhodes
doaj   +1 more source

Improved hydrometeor detection near the Earth's surface by a conically scanning spaceborne W-band radar [PDF]

Atmospheric Measurement Techniques
The Earth's strong radar surface return limits the detection of clouds and precipitation in the lowest part of the atmosphere by nadir-pointing spaceborne radars such as CloudSat and EarthCARE.
M. Coppola, A. Battaglia, A. Battaglia, F. Tridon, P. Kollias, P. Kollias   +5 more
doaj   +1 more source

A 30-month field evaluation of low-cost CO₂ sensors using a reference instrument [PDF]

Atmospheric Measurement Techniques
Low-cost, medium-precision sensor (LCS) networks have emerged as a promising approach for CO2 monitoring under complex urban emission conditions. However, the field performance of these LCSs faces significant challenges from environmental factors (e.g ...
Q. Cai, Q. Cai, Q. Cai, N. Zeng, N. Zeng, X. Yang, C. Xu, Z. Wang, P. Han, P. Han   +9 more
doaj   +1 more source

Assimilation of global navigation satellite system (GNSS) zenith delays and tropospheric gradients: a sensitivity study utilizing sparse and dense station networks [PDF]

Atmospheric Measurement Techniques
The assimilation of global navigation satellite system (GNSS) zenith total delays (ZTDs) into numerical weather models improves weather forecasts. In addition, the GNSS tropospheric gradient (TG) estimates provide valuable insight into the moisture ...
R. Thundathil, R. Thundathil, F. Zus, G. Dick, J. Wickert, J. Wickert   +5 more
doaj   +1 more source

Turbulent enhancement ratios used for characterizing local emission sources in a complex urban environment [PDF]

Atmospheric Measurement Techniques
In this study, we introduce the turbulent enhancement ratio (TER) as an experimental approach for characterizing local emission sources in complex urban environments, with a focus on the city of Innsbruck, Austria. The idea behind the approach is to take
C. Lamprecht, M. Graus, M. Graus, M. Striednig, M. Stichaner, W. Jud, A. Held, T. Karl   +7 more
doaj   +1 more source

Lagrangian aerosol particle trajectories in a cloud-free marine atmospheric boundary layer: implications for sampling [PDF]

Atmospheric Measurement Techniques
Meteorological processes such as gust fronts, roll structures, internal boundary-layer development and smaller-scale turbulence complicate the physical interpretation of measured aerosol particle properties, fluxes, and transport in the marine ...
H. J. Park, H. J. Park, J. S. Reid, P. F. Caffrey, M. J. Chinita, D. H. Richter   +5 more
doaj   +1 more source

Comparison of the performance between three Doppler wind lidars and a novel wind speed correction algorithm [PDF]

Atmospheric Measurement Techniques
Doppler wind Lidars (DWLs) have been widely used to detect wind vector variations, based on ground monitoring of atmospheric boundary layer and wind shear. This study evaluates the performance between three DWLs and in situ balloon radiosonde.
Y. Zhang, H. Hu, Y. Li, M. Liu, F. Zhang, H. She, H. Wu   +6 more
doaj   +1 more source

Adaptation of the CIMEL-318T to shipborne use: 3 years of automated AERONET-compatible aerosol measurements on board the research vessel Marion Dufresne [PDF]

Atmospheric Measurement Techniques
The Earth's oceans play a critical role in regulating the global climate and atmospheric processes, with marine aerosols significantly influencing weather patterns, air quality, and climate dynamics.
B. Torres, L. Blarel, P. Goloub, G. Dubois, M. F. Sanchez-Barrero, I. E. Popovici, I. E. Popovici, F. Maupin, E. Lind, A. Smirnov, A. Smirnov, I. Slutsker, I. Slutsker, J. Chimot, R. González, R. González, M. Sicard, M. Sicard, J. M. Metzger, P. Tulet   +19 more
doaj   +1 more source