Search Results

You are looking at 1 - 10 of 1,424 items for :

  • Journal of Atmospheric and Oceanic Technology x
  • All content x
Clear All
R. Minciardi, R. Sacile, and F. Siccardi

provide a more accurate measurement of the observed phenomena over a wide spatial region. Realizing the benefits that can derive from a WRN for purposes of civil protection operations management, the Italian government has recently undertaken to plan and to install a national WRN. As far as the integration of radar technology with other information is concerned, many recent works provide useful guidelines and exhaustive details on the state of the art. For European Union countries, relevant

Full access
A. Ono, F. Sakuma, K. Arai, Y. Yamaguchi, H. Fujisada, P. N. Slater, K. J. Thome, F. D. Palluconi, and H. H. Kieffer

AeR~t 1996 ONO ET AL. 321Preflight and In-Flight Calibration Plan for ASTER A. ONO AND F. $AKUMA National Research Laboratory of Metrology, Tsukuba, Japan K. ARAISaga University, Saga, Japan Y. YAMAGUCHIGeological Survey of Japan, Tsukuba, Japan H. FUJISADAElectro-technical Laboratory, Tsukuba, Japan P. N

Full access
Michael A. Filimon and Daniel L. Codiga

monitors ship traffic from marine vessels, ground stations, and aircraft using very high frequency (VHF) radio ( Arroyo 2011 ), and is required on commercial vessels over 300 tons and all passenger vessels. Vessel information, such as position, speed, and heading, is transmitted and recorded in real time. Equipping a MASC with AIS is straightforward and helps ensure its detection by other AIS-equipped vessels, and vice versa. This paper presents a method applicable to MASC deployment planning in the

Full access
Robert B. Lee III, Bruce R. Barkstrom, G. Louis Smith, John E. Cooper, Leonard P. Kopia, R. Wes Lawrence, Susan Thomas, Dhirendra K. Pandey, and Dominique A. H. Crommelynck

shortwave radiances, respectively. The CERES sensors, in-flight calibration systems, and ground calibration instrumentation are described along with outlines of the preflight andin-flight calibration approaches.1. Introduction This paper describes the Clouds and the Earth's Radiant Energy System (CERES) sensor design, in-flightcalibration systems and procedures, and preflight calibration plans for converting the CERES sensors outputsignals into earth-reflected solar and earth

Full access
Simone Lolli and Paolo Di Girolamo

constraints. The composite index, evaluated on existing networks, may be a useful tool to plan a future strategy, optimizing those stations equipped with lower-performing instruments. In this paper we consider the created composite index to characterize the performances of instruments dedicated to the measurement of two specific atmospheric parameters, wind speed and planetary boundary layer height, by considering a case based on real instruments available on the market. 2. Methodology The composite index

Full access
Jinbo Wang, Lee-Lueng Fu, Bo Qiu, Dimitris Menemenlis, J. Thomas Farrar, Yi Chao, Andrew F. Thompson, and Mar M. Flexas

. Locations of the glider are off the center of the swath and are different from the illustration in Fig. 10 , but they do not affect the conclusion. Final plan for the location of the instruments is still to be determined and not the focus here. (b) Surface positions of glider 1. Target location is marked (black symbol). Distances to target with a 1-km interval are indicated (circles; outer circle marks 6 km to target). Gliders perform worse than moorings. Glider SSH is generally weaker than . The

Full access
P. T. May, F. Cummings, J. Koutsovasilis, R. Jones, and D. Shaw

). Phase coding is not used at the moment but is in the development plan. The output spectrum consists of the fundamental 10-MHz pulse spectra and its images at 30, 50, 70, 90, 110, … MHz. The 70-MHz image, which is 18 dB down from the fundamental, is selected by two SAW filters and amplified to give a pulse spectrum with about 60-dB purity, thanks to the excellent 14-bit DACs available. The frequency management scheme of the wind profiler only requires a 40-MHz oscillator and a low phase noise

Full access
Dongsik Chang, Fumin Zhang, and Catherine R. Edwards

complex and variable circulation downstream of the Charleston Bump ( Legeckis 1979 ; Bane 1983 ). This combination of tides and the Gulf Stream causes significant temporal and spatial variations in the flow field and requires a better glider navigation method than the default glider navigation method. In recent years, there have been active studies regarding the path planning and navigation of marine vehicles. Witt and Dunbabin (2008) studied optimal path planning under strong, time

Full access
Milena Veneziani, Annalisa Griffa, and Pierre-Marie Poulain

subbasin of the Mediterranean Sea, where a significant historical drifter dataset has been collected over the years (e.g., Poulain 2001 ). We focus on the region of a new experiment that is presently being planned, the Dynamics of the Adriatic in Real Time (DART; see information online at http://oceans.deas.harvard.edu/haley/DART05 ). The DART region is in the coastal area of the middle Adriatic, close to the Gargano Cape. It is an area with strong topographic control and significant mesoscale

Full access
Robert A. Weller, Frank Bradley, and Roger Lukas

(1983) , and his own satellite microwave datasets and further showed interannual variability in the region of over 2 m yr −1 . Planning for COARE recognized the need to improve the measurements and to develop appropriate bulk flux algorithms. The TOGA goal of determining the net air–sea heat flux to an accuracy of 10 W m −2 on monthly to seasonal time scales was adopted ( WL92 ; Godfrey et al. 1999b ). Accurate rainfall measurements were also a goal, because of the large annual precipitation

Full access