Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms 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 i...... hiện toàn bộ
Geostationary Enhanced Temporal Interpolation for CERES Flux Products Tập 30 Số 6 - Trang 1072-1090 - 2013
David R. Doelling, Norman G. Loeb, D. F. Keyes, Michele L. Nordeen, Daniel Morstad, Cathy Nguyen, Bruce A. Wielicki, David F. Young, Moguo Sun
Abstract
The Clouds and the Earth’s Radiant Energy System (CERES) instruments on board the Terra and Aqua spacecraft continue to provide an unprecedented global climate record of the earth’s top-of-atmosphere (TOA) energy budget since March 2000. A critical step in determining accurate daily averaged flux involves estimating the flux between CERES Te...... hiện toàn bộ
Geophysical Applications of Partial Wavelet Coherence and Multiple Wavelet Coherence Tập 29 Số 12 - Trang 1845-1853 - 2012
Eric K. W. Ng, Johnny C. L. Chan
Abstract
In this paper, the application of partial wavelet coherence (PWC) and multiple wavelet coherence (MWC) to geophysics is demonstrated. PWC is a technique similar to partial correlation that helps identify the resulting wavelet coherence (WTC) between two time series after eliminating the influence of their common dependence. MWC, akin to mult...... hiện toàn bộ
CERES Synoptic Product: Methodology and Validation of Surface Radiant Flux Tập 32 Số 6 - Trang 1121-1143 - 2015
David A. Rutan, Seiji Kato, David R. Doelling, Fred G. Rose, L. Nguyen, Thomas E. Caldwell, Norman G. Loeb
AbstractThe Clouds and the Earth’s Radiant Energy System Synoptic (SYN1deg), edition 3, product provides climate-quality global 3-hourly 1° × 1°gridded top of atmosphere, in-atmosphere, and surface radiant fluxes. The in-atmosphere surface fluxes are computed hourly using a radiative transfer code based upon inputs from Terra and ... hiện toàn bộ
A Hybrid Thresholding Algorithm for Cloud Detection on Ground-Based Color Images Tập 28 Số 10 - Trang 1286-1296 - 2011
Qingyong Li, Weitao Lu, Jun Yang
Abstract
Cloud detection is the precondition for deriving other information (e.g., cloud cover) in ground-based sky imager applications. This paper puts forward an effective cloud detection approach, the Hybrid Thresholding Algorithm (HYTA) that fully exploits the benefits of the combination of fixed and adaptive thresholding methods. First, HYTA tra...... hiện toàn bộ
A New Sea Surface Height–Based Code for Oceanic Mesoscale Eddy Tracking Tập 31 Số 5 - Trang 1181-1188 - 2014
Evan Mason, Ananda Pascual, James C. McWilliams
AbstractThis paper presents a software tool that enables the identification and automated tracking of oceanic eddies observed with satellite altimetry in user-specified regions throughout the global ocean. As input, the code requires sequential maps of sea level anomalies such as those provided by Archiving, Validation, and Interpretation of Satellite Oceanographic...... hiện toàn bộ
On the Transition from Profile Altimeter to Swath Altimeter for Observing Global Ocean Surface Topography Tập 31 Số 2 - Trang 560-568 - 2014
Lee‐Lueng Fu, Clément Ubelmann
Abstract
Conventional radar altimeter makes measurement of sea surface height (SSH) in one-dimensional profiles along the ground tracks of a satellite. Such profiles are combined via various mapping techniques to construct two-dimensional SSH maps, providing a valuable data record over the past two decades for studying the global ocean circulation an...... hiện toàn bộ
In situ SST Quality Monitor (iQuam) 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 an...... hiện toàn bộ
Joint Calibration of Multiplatform Altimeter Measurements of Wind Speed and Wave Height over the Past 20 Years Tập 26 Số 12 - Trang 2549-2564 - 2009
Stefan Zieger, J. Vinoth, Ian R. Young
Abstract
Since 1985, for a period of more than 23 yr, seven altimeter missions have provided global coverage of significant wave height and wind speed. This study undertakes a long-term analysis of the accuracy and stability of altimeter-derived values of significant wave height and wind speed from the following satellites: European Remote Sensing-1 ...... hiện toàn bộ
Advances in Geostationary-Derived Longwave Fluxes for the CERES Synoptic (SYN1deg) Product Tập 33 Số 3 - Trang 503-521 - 2016
David R. Doelling, Moguo Sun, L. Nguyen, Michele L. Nordeen, Conor Haney, D. F. Keyes, Pamela E. Mlynczak
AbstractThe Clouds and the Earth’s Radiant Energy System (CERES) project has provided the climate community 15 years of globally observed top-of-the-atmosphere fluxes critical for climate and cloud feedback studies. To accurately monitor the earth’s radiation budget, the CERES instrument footprint fluxes must be spatially and temporally averaged properly. The CERES...... hiện toàn bộ