earth science

NOAA National Operational Model Archive and Distribution System

NOAA National Operational Model Archive and Distribution System is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand NOAA National Operational Model Archive and Distribution System rather than just read about it. In short: The NOAA National Operational Model Archive and Distribution System (NOMADS) is a web-services based project providing both real-time and retrospective format independent access to climate and weather model data. Overview To address a growing need for remote access to high volume numerical weather prediction and global climate models and data, the National Climatic Data Center (NCDC), along with the National Centers…

Key takeaways

NOAA National Operational Model Archive and Distribution System belongs to earth science; place it in that map before memorising details.
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Connect NOAA National Operational Model Archive and Distribution System to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NOAA National Operational Model Archive and Distribution System from memory before moving on to harder problems.

Reference excerpt

The NOAA National Operational Model Archive and Distribution System (NOMADS) is a web-services based project providing both real-time and retrospective format independent access to climate and weather model data.

Overview To address a growing need for remote access to high volume numerical weather prediction and global climate models and data, the National Climatic Data Center (NCDC), along with the National Centers for Environmental Prediction (NCEP) and the Geophysical Fluid Dynamics Laboratory (GFDL), initiated the NOAA Operational Model Archive and Distribution System (NOMADS) project. NOMADS addresses model data access needs as outlined in the U.S. Weather Research Program (USWRP) "Implementation Plan for Research in Quantitative Precipitation Forecasting" and Data Assimilation to "redeem practical value of research findings and facilitate their transfer into operations." The NOMADS framework was also developed to facilitate climate model and observational data inter-comparison issues as discussed in documents such as the Intergovernmental Panel on Climate Change (IPCC 1990, 1995, 2001) and the U.S. National Assessment (2000). NOMADS is being developed as "A Unified Climate and Weather Archive" so that users can make decisions about their specific needs on time scales from days (weather), to months (El Nino), to decades (global warming).

Project NOMADS is a network of data servers using established and emerging technologies to access and integrate model and other data stored in geographically distributed repositories in heterogeneous formats. NOMADS enables the sharing and inter-comparing of model results and is a major collaborative effort, spanning multiple Government agencies and academic institutions. The data available under the NOMADS framework include model input and Numerical Weather Prediction (NWP) gridded output from NCEP, and Global Climate Models (GCM) and simulations from GFDL and other leading institutions from around the world. The goals of NOMADS are to:

improve access to NWP and GCM's model output and provide the observational and model data assimilation products for Regional model initialization and forecast verification, promote improvements to operational weather forecasts, develop linkages between the research and operational modeling communities and foster collaborations between the climate and weather modeling communities, promote product development and collaborations within the geo-science communities (ocean, weather, and climate) to study multiple earth systems using collections of distributed data under a sustainable system architecture.

Partnerships The NOMADS framework is actively partnering with existing and development activities including the Comprehensive Large Array Stewardship System (CLASS); the National Oceanographic Partnership Program's (NOPP) National Virtual Ocean Data System (NVODS); the Department of Energy's Earth System Grid (ESG); and the Thematic Real-time Environmental Data Distributed Services (THREDDS) project being developed through the National Science Foundation and Unidata. To ensure that Agency and Institutional requirements are being met, the NOMADS collaborator's have established Science and Technical Advisory Panels. These newly established panels would ensure the NOMADS system and metadata architecture could provide necessary inter-operability; and develop data archive requirement recommendations to NOAA.

Benefits NOMADS fosters system inter-operability by integrating legacy systems and emerging technologies and existing metadata conventions used for models and observational data. NOMADS relies on local decisions about data holdings. Loosely combining legacy systems, while developing new ways to support data access to valuable data, permits NOMADS to work on the cutting edge of distributed data systems. In this effort, no one institution carries the weight of data delivery since data are distributed across the network, and served by the institutions that developed the data. The responsibility for documentation falls on the data generator; with the Advisory Panels ensuring overall quality and systems standards, and to determine which NOMADS data are required for long-term storage. Further, NOMADS in no way precludes the need for national centers to maintain and support long-term archives. In fact, NOMADS and secure data archives are mutually supportive and necessary for long-term research. The primary science benefit of the NOMADS framework is that it enables a feedback mechanism to tie Government and university research directly back to the NOAA operational communities, numerical weather prediction quality control and diagnostics processes at NCEP, and climate model assessments and inter-comparisons from around the world.

References

Rutledge, G.K., J. Alpert, and W. Ebuisaki, 2006: NOMADS: A Climate and Weather Model Archive at the National Oceanic and Atmospheric Administration. Bull. Amer. Meteor. Soc., 87, 327–341.

External links NOMADS home page

Worked examples

Example 1 — a first encounter with NOAA National Operational Model Archive and Distribution System

Start with the simplest possible case. Write down what NOAA National Operational Model Archive and Distribution System claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to NOAA National Operational Model Archive and Distribution System before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about NOAA National Operational Model Archive and Distribution System ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of NOAA National Operational Model Archive and Distribution System

In research: NOAA National Operational Model Archive and Distribution System appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses NOAA National Operational Model Archive and Distribution System in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: NOAA National Operational Model Archive and Distribution System is common in secondary-school and first-year university syllabi. It links to neighbouring topics National Oceanic and Atmospheric Administration, so understanding it makes those chapters shorter.
In everyday life: Look for NOAA National Operational Model Archive and Distribution System outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study NOAA National Operational Model Archive and Distribution System in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NOAA National Operational Model Archive and Distribution System means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain NOAA National Operational Model Archive and Distribution System out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NOAA National Operational Model Archive and Distribution System in simple terms?

Why does NOAA National Operational Model Archive and Distribution System matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study NOAA National Operational Model Archive and Distribution System?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on NOAA National Operational Model Archive and Distribution System.