Journal of Atmospheric and Oceanic Technology

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Does an Increase in Air Quality Models’ Resolution Bring Surface Ozone Concentrations Closer to Reality?
Journal of Atmospheric and Oceanic Technology - Tập 25 Số 11 - Trang 1955-1968 - 2008
Myrto Valari, Laurent Menut
Abstract A persistent challenge for small-scale air quality modeling is the assessment of health impact and population exposure studies. Despite progress in computation and in the quality of model input (i.e., high-resolution information on land use and emission patterns), the uncertainty associated with input parameters cannot be eliminated. The aim of this paper is to study different sources of ... hiện toàn bộ
An Integrated Approach to Error Correction for Real-Time Radar-Rainfall Estimation
Journal of Atmospheric and Oceanic Technology - Tập 23 Số 1 - Trang 67-79 - 2006
Siriluk Chumchean, Ashish Sharma, Alan Seed
Abstract A procedure for estimating radar rainfall in real time consists of three main steps: 1) the measurement of reflectivity and removal of known sources of errors, 2) the conversion of the reflectivity to a rainfall rate (Z–R conversion), and 3) the adjustment of the mean field bias as assessed using a rain gauge network. Error correction is associated with the first two steps and incorporate... hiện toàn bộ
Effects of Rain Gauge Temporal Resolution on the Specification of a Z–R Relationship
Journal of Atmospheric and Oceanic Technology - Tập 26 Số 7 - Trang 1302-1314 - 2009
Punpim Puttaraksa Mapiam, Nutchanart Sriwongsitanon, Siriluk Chumchean, Ashish Sharma
Abstract The weather radar is an efficient alternative for measuring spatially varying rainfall covering a large area at a high temporal resolution. This paper studies the impact of rainfall gauge temporal resolution on optimal relationships between radar reflectivity (Z) and rainfall rate (R). Four datasets of radar reflectivity and corresponding rain gauge rainfall data from Sydney and Brisbane,... hiện toàn bộ
Sea Surface Temperature Estimation from the Geostationary Operational Environmental Satellite-12 (GOES-12)
Journal of Atmospheric and Oceanic Technology - Tập 26 Số 3 - Trang 570-581 - 2009
Christopher J. Merchant, Andrew R. Harris, Eileen Maturi, Owen Embury, Stuart N MacCallum, J. P. D. Mittaz, Chris Old
Abstract This paper describes the techniques used to obtain sea surface temperature (SST) retrievals from the Geostationary Operational Environmental Satellite 12 (GOES-12) at the National Oceanic and Atmospheric Administration’s Office of Satellite Data Processing and Distribution. Previous SST retrieval techniques relying on channels at 11 and 12 μm are not applicable because GOES-12 lacks the l... hiện toàn bộ
Assessment of Shortwave Infrared Sea Surface Reflection and Nonlocal Thermodynamic Equilibrium Effects in the Community Radiative Transfer Model Using IASI Data
Journal of Atmospheric and Oceanic Technology - Tập 30 Số 9 - Trang 2152-2160 - 2013
Yong Chen, Yong Han, Paul van Delst, Fuzhong Weng
Abstract The nadir-viewing satellite radiances at shortwave infrared channels from 3.5 to 4.6 μm are not currently assimilated in operational numerical weather prediction data assimilation systems and are not adequately corrected for applications of temperature retrieval at daytime. For satellite observations over the ocean during the daytime, the radiance in the surface-sensitive shortwave infrar... hiện toàn bộ
Removing Solar Radiative Effect from the VIIRS M12 Band at 3.7 μm for Daytime Sea Surface Temperature Retrievals
Journal of Atmospheric and Oceanic Technology - Tập 31 Số 11 - Trang 2522-2529 - 2014
Quanhua Liu, Alexander Ignatov, Fuzhong Weng, Xingming Liang
AbstractOperational sea surface temperature (SST) retrieval algorithms are stratified into nighttime and daytime. The nighttime algorithm uses two split-window Visible Infrared Imaging Radiometer Suite (VIIRS) bands—M15 and M16, centered at ~11 and ~12 m, respectively—and a shortwave infrared band—M12, centered at ~3.7 m. The M12 is most transparent and critical for accurate SST retrievals. Howeve... hiện toàn bộ
In situ SST Quality Monitor (iQuam)
Journal of Atmospheric and Oceanic Technology - Tập 31 Số 1 - Trang 164-180 - 2014
Feng Xu, Alexander Ignatov
Abstract The quality of in situ sea surface temperatures (SSTs) is critical for calibration and validation of satellite SSTs. In situ SSTs come from different countries, agencies, and platforms. As a result, their quality is often suboptimal, nonuniform, and measurement-type specific. This paper describes a system developed at the National Oceanic and Atmospheric Administration (NOAA), the in situ... hiện toàn bộ
A Technique for Eliminating Water Returns from Lidar Beach Elevation Surveys
Journal of Atmospheric and Oceanic Technology - Tập 25 Số 9 - Trang 1671-1682 - 2008
Marissa Yates, R. T. Guza, Roberto Gutiérrez, Richard J. Seymour
Abstract Airborne light detecting and ranging (lidar) systems can survey hundreds of kilometers of shoreline with high spatial resolution (several elevation estimates per square meter). Sequential surveys yield spatial change maps of beach and dune sand levels. However, lidar data include elevations of the exposed, subaerial beach and, seaward of the waterline, the ocean surface. Here, a simple me... hiện toàn bộ
Airborne and Ground-Based Measurements Using a High-Performance Raman Lidar
Journal of Atmospheric and Oceanic Technology - Tập 27 Số 11 - Trang 1781-1801 - 2010
David N. Whiteman, Kurt Rush, Scott D. Rabenhorst, Wayne Welch, Martin Cadirola, Gerry McIntire, Felicita Russo, Mariana Adam, D. D. Venable, R. Connell, Igor Veselovskii, Ricardo Forno, B. Mielke, Bernhard Stein, Thierry Leblanc, Stuart McDermid, Holger Vömel
Abstract A high-performance Raman lidar operating in the UV portion of the spectrum has been used to acquire, for the first time using a single lidar, simultaneous airborne profiles of the water vapor mixing ratio, aerosol backscatter, aerosol extinction, aerosol depolarization and research mode measurements of cloud liquid water, cloud droplet radius, and number density. The Raman Airborne Spectr... hiện toàn bộ
Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms
Journal of Atmospheric and Oceanic Technology - Tập 26 Số 11 - Trang 2310-2323 - 2009
David M. Winker, Mark Vaughan, Ali Omar, Yongxiang Hu, Kathleen A. Powell, Zhaoyan Liu, William H. Hunt, Stuart A. Young
Abstract The Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) is a two-wavelength polarization lidar that performs global profiling of aerosols and clouds in the troposphere and lower stratosphere. CALIOP is the primary instrument on the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite, which has flown in formation with the NASA A-train constellation ... hiện toàn bộ
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