Further Discussion, etc.

فهرست عناوین اصلی در این پاورپوینت

فهرست عناوین اصلی در این پاورپوینت

● NOAA Emergency Response Division
● Key Role: Trajectory Modeling
● Primary Tool: GNOME
(General NOAA Operational Modeling Environment)
● GOODS
GNOME Online Operational Data Server
● Example: Deepwater Horizon
● Unstructured Grid Models?
● Some Models of Interest
● nGOMOFS (NOAA CSDL)
● FVCOM-GoM/GB for Mass Bay and Nantucket Sounds/Shoals
● ADCIRC:
Gulf of Mexico / Southern LA and Texas grid (SL18TX)
● Obstacles to using UGRID models:
● How to get it done?
● OPeNDAP-Unidata Linked Servers (OPULS)
● OPeNDAP:
the Data Access Protocol
● But how is it used?
● About Array and Grid Selection
● About Functions
● Example URLs
● Challenges
● Requirements
● Proposed Solution
● The server-side function
● Example ugrid() calls
● Implementation
● Progress so far
● Summary
● Use for Curvilinear grids, too?
● Further Discussion, etc.

نوع زبان: انگلیسی حجم: 4.66 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 32 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/05/16 06:59:27

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عبارات مهم استفاده شده در این مطلب

عبارات مهم استفاده شده در این مطلب

., grid, model, noaa, datum, –, opendap, server, element, m, type, response,

توجه: این مطلب در تاریخ 2019/05/16 06:59:27 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

https://www.opendap.org/pdf/jgallagher/BarkerGallagher_final.ppt

در صورتی که محتوای فایل ارائه شده با عنوان مطلب سازگار نبود یا مطلب مذکور خلاف قوانین کشور بود لطفا در بخش دیدگاه (در پایین صفحه) به ما اطلاع دهید تا بعد از بررسی در کوتاه ترین زمان نسبت به حدف با اصلاح آن اقدام نماییم. جهت جستجوی پاورپوینت های بیشتر بر روی اینجا کلیک کنید.

عبارات پرتکرار و مهم در این اسلاید عبارتند از: ., grid, model, noaa, datum, –, opendap, server, element, m, type, response,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

serving unstructured grids using opendap using server side operations to subset and subsample data christopher barker noaa office of response restoration emergency response division james gallagher opendap inc. noaa’s national ocean service office of response and restoration noaa emergency response division national contingency plan specifies noaa’s role in supporting the coast guard provide scientific expertise to support an incident response for oil and chemical spills key role trajectory modeling where is the oil or chemical going primary tool gnome general noaa operational modeling environment lagrangian element particle model forcing from external sources winds currents currents in house model external operational models goods gnome online operational data server example deepwater horizon ocean models utilized noaa csdl ngom navy models ncom hycom iasnfs usf west florida shelf roms tglo tamu tx shelf roms nc state sabgom all structured grid models unstructured grid models unstructured grids allow resolution to vary spatially conform to boundaries nice for oil spills and particle tracking many more ugrid models coming online many papers at this conference some models of interest fvcom ngomofs noaa csdl gulf of maine mass bay umass salish sea pnnl selfe columbia river ohsu texas estuaries models ut adcirc gulf of mexico southern la and texas grid ۹ ۱ ۸ ۱۲۸ nodes ۱۸ ۶۱ ۷۶۵ elements ۹ ۳۱ nodes ۱۷۴ ۵۵ elements v۶ ngomofs noaa csdl grid size open boundary ۶ km from miss r delta mobile bay ۶ m channel ۳۵ m gulfport channel ۱۲ to ۳ m galveston channel – ۲۵ to ۳۵ m pensacola ۷۵ m mobile bay al detail grid. about ۳ m grid resolution along a ۱۳ m deep navigation channel what if i just need mobile bay fvcom gom gb for mass bay and nantucket sounds shoals boston inner harbor very detailed grid – great coverage. but what if i just want boston inner harbor adcirc gulf of mexico southern la and texas grid sl۱۸tx gulf of mexico southern la and texas grid ۹ ۱ ۸ ۱۲۸ nodes ۱۸ ۶۱ ۷۶۵ elements just surface currents ۲۷۵ mb per time step plus the grid specs rick luettich’s adcirc grid for the northern gulf of mexico. ۱۸ million elements is ۲۷۵mb for just one time step of the surface currents it’s impossible for us to use these results in a response – and difficult for anyone to use – or even do visualization or analysis obstacles to using ugrid models no standard for data results on ugrids informal working group for quite a few years recent draft standard netcdf ۳ work on javanetcdf lib to support it sura modeling test bed project big grids need server side subsetting we’ve had out eye on a number of these models for years but haven’t yet gotten them into goods. why not no standard for ugrids – we don’t know what to read and providers don’t know what to write. even if we can read a few – may are lacking key information metadata boundary types etc. how to get it done noaa orr post dwh funding better able to response to large spills we started talking to folks about server side subsetting options but we’re clients we’re not going to run a server we needed something that would become an excepted standard tool. how to get it done noaa nesdis noted assorted issues netcdf opendap development funding limited multiple diverging implementations unfunded mandate nesdis coordinated funding from technology planning and integration for observations tpio program or r national climatic data center ncdc as it turns out others in noaa and particularly nesdis were noting other issues with open dap that were getting in the way with noaa’s mission. there is very little funding for opendap and netcdf development – some things were stalled windows netcdf۴ libs for instance . what little funding there was was sometimes going to feature enhancements for a particular use case and particular implementation unidata development of the netcdf java libs and the thredds data server. this created what steve hankin called the unfunded mandate – once a feature was in one system users expected it and the other systems had something of a mandate to keep up – but no funding to do it. do address these issue lewis mcculloch at nedis put together funding from a number of noaa offices or r tpio and ncdc to start and maybe more in the future. opendap unidata linked servers opuls noaa baa grant supports this important collaboration between unidata opendap first goal conformance between opendap unidata servers through which access is gained to growing amounts of noaa related data. other short term goals include asynchronous modes such as are needed for delayed access to near line data perhaps stored on tape e.g. improved access with server side subsetting to data organized on non rectangular meshes such as in coastal modeling work began in boulder during october will be influenced by an advisory committee yet to be appointed this resulted in a grant for the opuls project a join grant to both opendap inc. and unidata. the goal is to unify the serer architectures – and to add a few enhancements while they are at it. david fulker at opendap is the pi. ugrid subsetting will be used as a test case for adding new features through this collaboration. opendap the data access protocol dap۲ combines simple data model with a general set of operators. data model atomic types e.g. ‘integer’ arrays structures grids and sequences. operators these provide ways to subset all but the atomic types. domain neutral by keeping the semantics of the model clean we ensure that it can be applied to many different types of data. by ‘relational types’ i mean there is an explicit relationship between elements of the grid and sequence types. a sequence is similar to a relational table because it has columns of different types and rows of ‘instances’. each element of any given instance is related or bound to the other elements of that row. grids provide a similar behavior but for n dimensional data. it sounds fancy but in practice it’s really pretty simple. a grid’s map vectors provide a way to relate the values of some …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: ., grid, model, noaa, datum, –, opendap, server, element, m, type, response,

این فایل پاورپوینت شامل 32 اسلاید و به زبان انگلیسی و حجم آن 4.66 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/05/16 06:59:27 استخراج شده است.

https://www.opendap.org/pdf/jgallagher/BarkerGallagher_final.ppt

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