Results 41 to 50 of about 5,576 (50)

Improving the accuracy in particle concentration measurements of a balloon-borne optical particle counter, UCASS [PDF]

Atmospheric Measurement Techniques
For balloon-borne detection of aerosols and cloud droplets (diameter 0.4 < Dp < 40 µm), a passive-flow Universal Cloud and Aerosol Sounding System (UCASS) was used, whose sample flow rate is conventionally derived from balloon ascent rates using ...
S. Jost, R. Weigel, K. Kandler, L. Valero, J. Girdwood, J. Girdwood, C. Stopford, W. Stanley, L. K. Eichhorn, C. von Glahn, H. Tost   +10 more
doaj   +1 more source

Potential CO₂ measurement capabilities of a transportable Near Infrared Laser Heterodyne Radiometer (LHR) [PDF]

Atmospheric Measurement Techniques
In this study, heterodyne detection enables high spectral resolution, which in turn enhances the vertical sensitivity of ground-based CO2 measurements.
M. T. El Kattar, T. Wei, A. Saxena, H. Herbin, W. Chen   +4 more
doaj   +1 more source

Real-time organic aerosol characterization via Orbitrap mass spectrometry in urban and agricultural environments [PDF]

Atmospheric Measurement Techniques
Mass spectrometry techniques traditionally deployed in the field often operate at low mass resolution, making it hard to unambiguously identify and attribute organic molecules.
J. David, L. D'Angelo, M. Simon, A. L. Vogel   +3 more
doaj   +1 more source

Comparisons of polarimetric radio occultation measurements with WRF model simulation for tropical cyclones [PDF]

Atmospheric Measurement Techniques
A novel radio occultation (RO) technique, polarimetric RO (PRO), has recently been developed to measure differential polarimetric phase shift together with traditional RO products such as bending angle and refractivity.
S.-Y. Chen, Y.-H. Kuo, H.-W. Li, R. Padullés, E. Cardellach, F. J. Turk   +5 more
doaj   +1 more source

A novel simplified ground-based thermal infrared (TIR) system for volcanic plume geometry, SO₂ columnar abundance, and flux retrievals [PDF]

Atmospheric Measurement Techniques
In the last few decades, volcanic monitoring using remote sensing systems has become an essential tool to investigate the effects of volcanic activity on environment, climate, human health, and aviation, as well as to give insights into volcanic ...
L. Guerrieri, S. Corradini, L. Merucci, D. Stelitano, F. Prata, L. Lambertucci, C. Naranjo, R. Biondi   +7 more
doaj   +1 more source

Retrieving vertical profiles of cloud droplet effective radius using multispectral measurements from MODIS: examples and limitations [PDF]

Atmospheric Measurement Techniques
With the coming launch of the Climate Absolute Radiance and Refractivity Earth Observatory (CLARREO) Pathfinder (CPF) comes an opportunity to develop a new retrieval for warm, non-precipitating clouds from spectral reflectance measurements.
A. J. Buggee, A. J. Buggee, P. Pilewskie, P. Pilewskie   +3 more
doaj   +1 more source

JLH Mark2 – An Improved Opto-Mechanical Approach to Open-Path in situ Water Vapor Measurement in the Upper Troposphere/Lower Stratosphere [PDF]

Atmospheric Measurement Techniques
To improve the accuracy and precision of in situ water vapor measurements from aircraft, a new opto-mechanical design was implemented on the JPL Laser Hygrometer Mark2.
R. L. Herman, R. F. Troy, R. F. Troy, K. M. Aaron, I. Sanders, K. Schwarm, J. E. Klobas, A. Swanson, A. Carpenter, S. Ozog, K. Chin, L. E. Christensen, D. Fu, R. F. Jarnot, R. A. Stachnik, R. Vasudev   +15 more
doaj   +1 more source

Surface reflectance biases in XCH₄ retrievals from the 2.3 µm band are enhanced in the presence of aerosols [PDF]

Atmospheric Measurement Techniques
In this work, we present the results of an observing system simulation experiment (OSSE) in which we investigate the emergence of a surface-reflectance-dependent bias in retrieved column-averaged dry-air mole fractions of methane (XCH4).
P. Somkuti, P. Somkuti, G. McGarragh, C. O'Dell, A. Di Noia, A. Di Noia, A. Di Noia, L. Vogel, L. Vogel, L. Vogel, L. Vogel, S. Crowell, L. E. Ott, H. Bösch, H. Bösch, H. Bösch   +15 more
doaj   +1 more source

The Arctic Weather Satellite radiometer [PDF]

Atmospheric Measurement Techniques
The Arctic Weather Satellite (AWS) is a project led by the European Space Agency (ESA) that has several novel aspects. From a technical perspective, it serves as a demonstrator of how to expand the network of operational satellite-based microwave sensors
P. Eriksson, A. Emrich, K. Kempe, J. Riesbeck, A. Aljarosha, O. Auriacombe, J. Kugelberg, E. Hekma, R. Albers, A. Murk, S. Møller Pedersen, L. John, J. Stake, P. McEvoy, B. Rydberg, A. Dybbroe, A. Thoss, A. Canestri, C. Accadia, P. Colucci, D. Gherardi, V. Kangas   +21 more
doaj   +1 more source

The AquaVIT-4 intercomparison of atmospheric hygrometers [PDF]

Atmospheric Measurement Techniques
The AquaVIT-4 intercomparison of atmospheric hygrometers was conducted at the AIDA (Aerosol Interaction and Dynamics in the Atmosphere) climate simulation chamber of the Karlsruhe Institute of Technology (KIT), Germany, in March–April 2022, within the ...
S. Brunamonti, H. Saathoff, A. Hertzog, G. Diskin, M. Fujiwara, K. Rosenlof, O. Möhler, B. Tuzson, L. Emmenegger, N. Amarouche, G. Durry, F. Frérot, J.-C. Samake, C. Cenac, J. Lopez, P. Monnier, M. Ghysels   +16 more
doaj   +1 more source