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Andrea M. Doglioli
,
Francesco Nencioli
,
Anne A. Petrenko
,
Gilles Rougier
,
Jean-Luc Fuda
, and
Nicolas Grima

) receiver connected to a very high-frequency (VHF) packet radio transmitter. An onboard VHF receiver was interfaced with a computer. A specific software was developed in order to display the ship and buoy positions overlaid to the injection (or sampling) grid. Release and tracking of a tracer patch within a Lagrangian reference frame was also at the base of the Plankton Reactivity in the Marine Environment (PRIME) project ( Law et al. 2001 ). During the field experiment, an eddy was marked with Argos

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M. G. G. Foreman
,
J. Y. Cherniawsky
, and
V. A. Ballantyne

and widely used approaches has been, and continues to be, harmonic analysis wherein the energy at specific tidal frequencies is determined by a mathematical fitting procedure, usually least squares. Though computer software that performs harmonic tidal analysis of one- and two-dimensional time series has been are available for more than 40 yr (links to software packages are available online at http://www.pol.ac.uk/psmsl/training/analysis.html ), many of these codes are restrictive in both the

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Eric K. W. Ng
and
Johnny C. L. Chan

Kurths (2004) presented the evolution of cross-wavelet transform, developed a statistical test for wavelet coherence (WTC), 1 and discussed some pitfalls in wavelet applications. Extending the toolkit of Torrence and Compo (1998) , Grinsted et al. (2004) provided a software package for cross-wavelet transform and WTC. Recently, Mihanović et al. (2009) introduced two additional wavelet analysis techniques—partial wavelet coherence (PWC) and multiple wavelet coherence (MWC)—to the field of

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Matthew E. Gropp
and
Casey E. Davenport

that individual cells are readily tracked, while the cross-correlation method instead measures the general flow field and does not necessarily track individual cells ( Han et al. 2009 ). Thus, a combination of these two methodologies would provide an optimal framework for tracking convective systems ranging in size from mesoscale convective systems to individual cells; the Enhanced TITAN (ETITAN) tracking software ( Dixon and Wiener 1993 ; Han et al. 2009 ) is an example of blending overlapping

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Ryan M. May
,
Kevin H. Goebbert
,
Jonathan E. Thielen
,
John R. Leeman
,
M. Drew Camron
,
Zachary Bruick
,
Eric C. Bruning
,
Russell P. Manser
,
Sean C. Arms
, and
Patrick T. Marsh

Meteorology and atmospheric science have long had a strong reliance on data visualization and especially map analysis. From the mid 1980s through the early 2000s, this meant widespread use of software tools like Read Interpolate Plot version 4 (RIP4; Stoelinga 2018 ), NCAR Command Language (NCL; NCAR 2019 ), General Meteorology Package (GEMPAK; Unidata 2019 ), and Grid Analysis and Display System (GrADS; George Mason University 2018 ). Tools like these achieved favor because they promoted

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William E. Foust

are specific to the field of atmospheric science, and students’ attention is shared among other STEM disciplines ( Bhattacharya et al. 2020 ). Additionally, models are inherently complex and computationally demanding. The software installation requires time and highly technical computing skills, running the model requires detailed knowledge of tunable parameters, and visualizing the model’s output often requires programming skills. There are tools like Science on a Sphere and Educational Global

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M. Heistermann
,
S. Collis
,
M. J. Dixon
,
S. Giangrande
,
J. J. Helmus
,
B. Kelley
,
J. Koistinen
,
D. B. Michelson
,
M. Peura
,
T. Pfaff
, and
D. B. Wolff

Recent advances in community-based software development have demonstrated that open-source software can be a real benefit to the radar community. Since the emergence of weather radar technology in the 1940s, research has sought to tap the full potential of weather radar observations. During the digital age, improvements in radar technology have been closely linked to advancements in computer science and software engineering. Making use of modern radars is not possible without software. Much

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J. Adams
,
R. Garcia
,
B. Gross
,
J. Hack
,
D. Haidvogel
, and
V. Pizzo

JULY1992 ADAMS ET AL. 1447Applications of Multigrid Software in the Atmospheric Sciences J. ADAMS, R. GARCIA, B. GROSS, J. HACK, D. HAIDVOGEL, AND V. PIZZO National Center for Atmospheric Research, * Boulder, Colorado (Manuscript received 16 May 1991, in final form 24 October 1991)ABSTRACT Elliptic partial differential equations from different areas in the atmospheric sciences are easily and efficientlysolved

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Jon E. Ahlquist

Meteorologists need to be able to manipulate arbitrary dates in the past, present, and future. Here calendar rules for both the Julian (old) and Gregorian (modern) calendars are reviewed. The author describes free software available online to perform calendrical conversions involving (day, month, year), (day of the year, year), and Julian day number for both the Julian and Gregorian calendars.

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A. Henderson-Sellers
,
A. J. Pitman
,
B. Henderson-Sellers
,
D. Pollard
, and
J. M. Verner

MAY 1995 HENDERSON-SELLERS ET AL. 1043Applying Software Engineering Metrics to Land Surface Parameterization Schemes~A. HENDERSON-SELLERS,* B. HENDERSON-SELLERS,* * D. POLLARD, ~ J. M. VERNER, $ AND A. J. PITMAN* - Climatic Impacts Centre, Macquarie University, North Ryde, Australia - * School of Computing Sciences, University of Technology, Sydney, Australia - National

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