Please note that the displacement height is the height at which the log wind profile projects the wind to be zero. The modernera retrospective analysis for research and applications, version 2 merra 2 provides data beginning in 1980. Goddard earth sciences data and information services. Exporting data does windographer let me export graphs for my reports. Average weather in phoenix arizona, united states in phoenix, the summers are sweltering and dry, the winters are cool, and it is mostly clear year round. Added spike detection also for wind direction data. Wind roses for wind speeds modeled by merra top left, the wind toolkit at 60 m top right. Wind resource data are used to generate production cost functions for wind at the provincial level and. You can also order the raw wind and weather data on our historical weather data request page for example for an insurance case, to better plan your vacation etc. Climate data online cdo the national climatic data. Longterm trend and seasonaldiurnal bias were accounted for.
A weather file may contain typicalyear data that represents longterm historical data or singleyear data for a particular year. More matlab comprehensive examples for ges disc merra products. Initial evaluations of the merra data presented in the previous chapter suggest that they are as good as, and in many ways superior to, weather data time series from conventional surfacebased owss. Average weather in sierra vista, arizona, united states, year. Time series for nasa merra wind speed and direction are. Weather data a sam weather file is a text file that contains one years worth of data in hourly or subhourly time steps describing the solar resource or wind resource at a particular location.
An integrated assessment of chinas wind energy potential. Modelling the swedish wind power production using merra. Distributions of hourly energy and step changes were adequately captured. The modern era retrospectiveanalysis for research and applications merra was undertaken by nasas global modeling and assimilation office with two primary objectives. The modernera retrospective analysis for research and.
Merra data, downloading it from the server, extracting and processing the data elements. Average weather in sierra vista arizona, united states in sierra vista, the summers are hot and partly cloudy and the winters are cold, dry, and mostly clear. The modernera retrospective analysis for research and applications, version 2 merra 2 web service, available worldwide, delivers time series of temperature at 2 m, relative humidity at 2 m, pressure at 2 m, wind speed and direction at 10 m, rainfall, snowfall and snow depth time steps range from 1 min up to 1 month original data are hourly. The 35 year merra2 data sets that you download using this tool contain hourly time series values of the following four variables. Right total wind energy rose using data from two nearby merra sites for the period march 27, 2012 to march 26, 20. Locations are not all inclusive and wind data may be. Visualizes data and analyzes the potential for wind energy.
Figure 7 depicts the mean seasonal vertical distribution of 925 hpa zonal winds in the tropical americas with data from merra2 reanalysis. It is based on a version of the geos5 atmospheric data assimilation system that was frozen in 2008. Nasas earth observing system data and information system eosdis is a key core capability in nasas earth science data systems program for archiving and distributing earth science data from multiple missions to users. An analysis of nasas merra meteorological data to supplement observational data for calculation of climatic. Apr 10, 2017 the modernera retrospective analysis for research and applications merra dataset was released in 2009.
The annual plots show the range of daily values that go into each years average with gray shading. Climate data services nasa center for climate simulation. Average weather in sierra vista, arizona, united states. The merra time period covers the modern era of remotely sensed data, from. In this study the halfhourly flux data turbulent, precipitation, and radiative fluxes were averaged to hourly data to match the time resolution of merra and cfsr data, while the observations of the atmospheric states temperature and wind speed were filtered by only using every other data point as the state variables from the reanalysis. The arrows point in the direction that the wind is blowing. Windographer data downloader this tool allows you to download longterm meteorological data for anywhere on the surface of the earth for free. It shows you the four nearest grid points on a map, letting you choose the. The merra reanalysis data show a higher spatial and temporal resolution hourly in comparison with the ncepncar 6 hourly which allows a better representation of the local wind climate. Calculation of wind farm production losses via merra data. The synthesized mean monthly averaged wind speed from two nearby merra sites. The climate data guide project is seeking support to develop a climate model evaluation guide. Merra provides an invaluable data source for model assessment, climate and.
The modern era retrospectiveanalysis for research and applications was developed to support nasas earth science objectives, by applying the stateoftheart gmao data assimilation system that includes many modern observing systems such as eos in a climate framework. Submitted by kishorekumargrandhi on thu, 06022016 02. Sep 25, 2015 merra 2 is a reanalysis data product from nasagmao. The last 2 weeks of past weather data for phoenix are. Over all good agreement in the zonal winds between merra reanalysis data and rh200 is very encouraging and vouches for using the merra reanalysis zonal winds belowprod. The project focuses on historical analyses of the hydrological cycle on a broad range of weather and climate time scales and places the nasa eos suite of observations in a climate context. Merra2 uses a version of the geos model with the gridpoint statistical interpolation gsi atmospheric analysis developed jointly with noaancepemc. Wind power density wpd in china has been constructed using boundary layer flux data from the modern era retrospectiveanalysis for research and applications merra dataset with a 0. The modernera retrospective analysis for research and applications, version 2 merra2 provides data beginning in 1980.
Hi, i downloaded merra 6hourly data of specific humidity, temperature and wind and i cannot read them. Unified user interface at nasa, uui, data, ges disc, datasets. Latitude longitude spacing refers to the grids downloaded for this work. Nasas climate computing center nccs, who provided the computational services. The merra2 data product provides global atmospheric data every. It was introduced to replace the original merra dataset because of the. We will promote a systematic approach to model evalaution, utilizing stateoftheart data sets and statistical practices. When the data have been processed at emd, then the following parameters are available from within the online data services within windpro. Includes meteorological conditions and turbine power for more than. How to obtainplotanalyze data advancing reanalysis. It is currently being produced with the gmaogeos5 data assimilation system version 5. The s0 atmospheric oscillations in 35year merra zonal wind. Whilst we require wind farm developers to provide the crown estate with data, we also recognise that the wind is what makes a wind farm work commercially. Left total wind energy rose using longterm data from two nearby merra sites.
Merra is a nasa reanalysis for the satellite era using a major new version of the goddard earth observing system data assimilation system version 5 geos5. Is it possible to download merra 2 data as a single file for whole period for one pressure level and for one variable. Yes, you can right click on any graph or wind rose to copy it to the clipboard or export it to a. Nasas modernera retrospective analysis for research. Clicking a link will bring up, in a new window, a pdf vector plot or a plaintext ascii data file that is suitable for input into any program. Click select data sets, expand goddard earth sciences data and information services center merra choose both 1 mat1nxrad 2 mat1nxslv wind, temp click choose. This is the wind, wave and weather statistics for phoenix sky harbor in arizona, united states. The s0 atmospheric oscillations in 35year merra zonal. The modernera retrospective analysis for research and applications merra dataset was released in 2009. The wind statistics are based on real observations from the weather station at phoenix sky harbor. Merra 2 is intended to replace the merra reanalysis product which was created with geos5.
The agmerra and agcfsr climate forcing datasets were created as an element of the agricultural model intercomparison and improvement project. When the data have been processed at emd, then the following parameters are available from within the onlinedata services within windpro. Merra data span the period 1979 through february 2016 and were produced on a 0. Windographer data downloader free era5 and merra2 data. It downloads a full 35year merra data set from windnavigator in about two minutes. Earlier time period plots and data tables are accessible from links at top of page. The present study is the first attempt to validate merra reanalysis data with observations in the uslm region. Jun 24, 2010 the modern era retrospectiveanalysis for research and applications was developed to support nasas earth science objectives, by applying the stateoftheart gmao data assimilation system that includes many modern observing systems such as eos in a climate framework. Share wind energy maps and data on delicious share wind energy maps and data on digg.
Share wind energy maps and data on email share wind energy maps and data on facebook. Merra2 notes, questions, and discussion advancing reanalysis. I want to compare merra 2 wind data with land data for pakistan, and i am unable to access download merra 2 data for pakistan under following required parameters. The wind data sets that serve as inputs to these studies must realistically reflect the ramping. Over the course of the year, the temperature typically varies from 37f to 93f and is rarely below 29f or above 99f. Estimating topofatmosphere thermal infrared radiance using. The use of merra reanalysis wind data could be a relevant improvement in accuracy for energy production estimation.
Download variables like temperature, wind, clouds and precipitation as csv for any place on earth. These data include quality controlled daily, monthly, seasonal, and yearly measurements of temperature, precipitation, wind, and degree days as well as radar data and. Is there any step by step instruction to download merra 2 data easily. Small wind site assessment guidelines tim olsen advanced energy systems llc robert preus national renewable energy laboratory technical report. Right total wind energy rose using data from two nearby merra sites for the period march 27, 2012 to march 26, 20 48 figure b12. The average hourly wind speed in phoenix experiences mild seasonal variation over the course of the. As nasa weather and climate models simulate our planet on scales from hours to millennia, they produce datasets up to petabytes in size. Therefore there is a commercial sensitivity around wind speed data for the owners and developers of wind farms. Department of atmospheric sciences, the university of arizona, tucson, arizona. Wind resource data, tools, and maps geospatial data science. Areas with good exposure to prevailing winds and annual average wind speeds around. Image pdf this map shows the predicted mean annual wind speeds at a 30m height, presented at a spatial resolution of 2 kilometers that is interpolated to a finer scale. More matlab comprehensive examples for ges disc merra.
Wake losses and power curve smoothing were modelled with global parameters. Explore wind resource data via our online geospatial tools and downloadable maps and data sets. Validation of merra reanalysis upperlevel winds over low. It currently supports the download of era5, merra and merra2 data, and in the future it may incorporate additional data sources. Yes, it allows free download of merra and merra 2 data, which is often suitable for longterm reference data. Locations are not all inclusive and wind data may be available for sites not listed in this summary. This page provides more comprehensive examples on how to access and visualize various nasa ges disc merra products using matlab.
Additional timedelayed wind data files, listings and plots are available through the cdaweb public pages. Merra 2 uses a version of the geos model with the gridpoint statistical interpolation gsi atmospheric analysis developed jointly with noaancepemc. Weather map with the current wind speed for arizona. Nasas climate data services cds provide a central location for publishing and accessing large, complex climate model data to benefit the climate science community as well as the broader public. Climate data online cdo provides free access to ncdcs archive of global historical weather and climate data in addition to station history information. Hourly wind power production in sweden was modelled using merra reanalysis data. Average weather in phoenix, arizona, united states, year round.
The modernera retrospective analysis for research and applications merra was undertaken by nasas global modeling and assimilation office with two primary objectives. Share arizona 30meter residentialscale wind resource map on email. Climate data online cdo the national climatic data center. The commercial mesoscale data use in this study is vortex. Overview and meteorological validation of the wind. To address this we agree a 2 year moratorium on the release of wind data. Average weather in phoenix, arizona, united states, year. It currently supports the download of era5, merra and merra 2 data, and in the future it may incorporate additional data sources. If the standard deviation of wind direction is measured, its per sector variation with wind speed is plotted tscheck sheet. Merra wind speed and direction dataset has 1 hour time step. Wind is a spin stabilized spacecraft launched in november 1, 1994 and placed in a halo orbit around the l1 lagrange point, more than 200 re upstream of earth to observe the unperturbed solar wind that is about to impact the magnetosphere of earth.
I want to compare merra 2 wind data with land data for pakistan, and i am unable to accessdownload merra 2 data for pakistan under following required parameters. The s0 atmospheric oscillations in 35year merra zonal wind and temperature dong l. Evaluation of longterm pavement performance lttp climatic. Time series for each 4 variables are available since 1 january 1979 up to 31 july 2014 35.
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