Questions tagged [noaa]

The National Oceanic and Atmospheric Administration (NOAA) is a US federal agency focused on the condition of the oceans and the atmosphere.

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HURDAT2 Does anybody have advice on how to convert large txt file to .shp in efficient manner?

NOAA's National Hurricane Center provides historical data on hurricane tracks from 1851-present (https://www.nhc.noaa.gov/data/hurdat/hurdat2-1851-2021-041922.txt) . I need to update a map with these ...
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1 answer
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NetCDF stretched along Y (latitude) axis

I'm working with NOAA temperature NetCDF files and trying limit area of interest to the US area only using bounding box. In Jupyter Notebook I wrote few lines to do it and on the plot everything looks ...
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1 answer
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Get historical wind forecast data from GFS for a specific location

I need historical windspeed & direction forecast to train an ML model. GFS seems to be the best solution since they have 6 months of forecasts publicly available: https://www.ncei.noaa.gov/data/...
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Merging S57 NOAA ENC Depth Contours (DEPCNT) for Different Scale Level Maps

I have a challenge merging ENC map data from S57 to derive single maps comprising the most accurate data available. For example: I have a scale level 5 map US5FL25M which holds more accurate data than ...
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1 answer
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QGIS : Z value from Exported Data (NOAA)

I open the ENC Direct data (any file) (https://www.charts.noaa.gov/ENCs/ENCs.shtml) in Arcmap using Esris' free S-57 loader extension and I'm able to see the SOUNDG_P layer and can display the Depth. ...
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How to convert hrp format to hrpt16

I have an hrp file, I want to process it in the AAPP software package, for this it needs to be converted to hrpt16 format? This is the Noaa satellite data encoding format. We need an example to write ...
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CRS for NOAA snow cover data

I am helping an undergrad student with dissertation work. The student wants to analyse this data: https://www.ncei.noaa.gov/products/climate-data-records/snow-cover-extent With CDO I created annual ...
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Missing Global Forecast System wind data in northern hemisphere

I'm trying to use GFS analysis wind speed data but when opening the GRIB2 file as a mesh layer in QGIS (both 3.16.16 and 3.22.3) much of the data for the northern hemisphere is missing. This problem ...
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Converting NOAA Nautical s57 ENC to shapefiles for use in QGIS on Mac - missing .prj files?

I have been attempting to follow the instructions given on the following video: https://www.youtube.com/watch?v=9W5TmXSMsRk which is basically an English version of this: https://www.sigterritoires.fr/...
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When reading a BSB/KAP chart file, I am getting incorrect run lengths. Many runs lengths are way too long

My java code for reading the run length portion of the stream is shown below. The run lengths being read in don't make sense. byte b = (byte) br.read(); //read a byte from the stream ...
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Pyferret axes lines thickness

Is there a way to set thickness of specific axes in ferret? With the default pen the lower axis is thin or invisible if I output image as png. I've tried setting PPL PEN 0, 7, which makes this lower ...
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How can I know the specific information of the monthly average data?

I know that the "google earth engine" site provides NOAA's VIIRS-DNB VCMSLCFG information. This is the monthly average data. The satellite photographs the entire earth twice a day, and I ...
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398 views

Opening a grib from the web with GDAL in Python using /vsicurl throws error on Mac but not Windows

I have a Python script that attempts to open a grib file as such: from osgeo import gdal url = "/vsicurl/https://ftpprd.ncep.noaa.gov/data/nccf/com/hrrr/prod/hrrr.20210505/conus/hrrr.t15z....
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How to display SWPC aurora forecast data in Leaflet

The US Space Weather Prediction Center publishes the output of its Ovation forecast model on their website as JSON files: https://services.swpc.noaa.gov/json/ovation_aurora_latest.json As far as I can ...
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1 answer
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Accessing ee.ImageCollection("NOAA/GOES/16/FDCC") from Google Earth Engine

Can you advise if ImageCollection("NOAA/GOES/16/FDCC") from GOES-16 FDCC Series ABI Level 2 Fire/Hot Spot Characterization CONUS contain any data? I was trying to review the map with Earth ...
2 votes
1 answer
160 views

Reproject file to line up with geographic features on a map

I have been trying to reproject data to match the "geographic features" on a map (and also shapefiles) in QGIS or on the web. I'm ingesting raw GRIB data (available here). I'm using python ...
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Translate to GTiff from NOAA nc file

I have level 2 of NOAA nc file. The data is in https://1drv.ms/u/s!AjXAWS5maHffhyqaxqd61ok-SFsY?e=mcUdnE. I want to open the file in QGIS or GRASS GIS. But, they don't recognize it. So, I use GDAL. I ...
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Opening marine phytoplankton NPP data in QGIS

How can I open these file in QGIS? I am beginner at GIS softwares. My aim is to obtain marine phytoplankton NPP data. These data are available at oceancolor.gsfc.nasa.gov and www.nodc.noaa.gov, but ...
1 vote
1 answer
989 views

Unable to read GRIB datas with XArray

I used this code to read grib data import os import numpy as np import pandas as pd import xarray as xr path = "gfsanl_4_2019101000.g2" os.chdir(path) ds = xr.open_dataset('...
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Is there anyway to read grib file without download it?(directly from the link)

grbs = pygrib.open( 'https://www.ncei.noaa.gov/data/north-american-mesoscale-model/access/historical/forecast/202001/20200101/nam_218_20200101_0600_024.grb2') grb = grbs.read(1)[0] This is what I ...
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Whether NOAA AVHRR NDVI V5 already remove cloud?

We want to use NOAA/CDR/AVHRR/NDVI/V5 datasets for analysis, but we are not sure if the NDVI already remove the cloud and cloud shadow or not? Need we use 'QA' to remove the cloud and cloud shadow ...
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1 answer
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GCS Sphere EMEP vs GCS WGS 1984

NOAA provides QPF data on rainfall in the form of shapefiles. The shapefiles include .prj files with information on the coordinate system used: GEOGCS["GCS_Sphere_EMEP",DATUM["D_Sphere_EMEP",SPHEROID[...
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Converting NOAA's World Ocean Database NetCDF files to tabular data using Python

I'm trying to convert variables from NetCDF files to tabular data, but can't understand how to group observations by some index or key variable. For example, when loading data from WOD queries using ...
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NOMADS grib file naming

I am looking to run https://polar.ncep.noaa.gov/waves/examples/usingpython.shtml#example_2 example on wave model data. It refers to downloading grib files from https://nomads.ncep.noaa.gov/pub/...
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Understanding NOAA/GFS0P25 dataset of Google Earth Engine

I'm trying to get time-series data from NOAA/GFS0P25 data set on GEE. My code: var m2 = "NOAA/GFS0P25" var band1 = 'total_precipitation_surface' var data_collection = ee.ImageCollection(m2); var ...
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Automating Model Builder (ArcMap) for NetCDF Processing

I have a NetCDF with 30+ years of monthly data from which I want to find the climatological normal. Using the NetCDF tutorial I found through NOAA (https://www.esrl.noaa.gov/psd/data/gridded_help/...
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"Error 4: xxxxx.dat: not recognized as a supported file format."

I am trying to convert a .dat file to a .tif file using gdal_translate. The .dat file comes with an associated .Hdr file of the same name with the metadata (these are geospatial data from SNODAS). ...
2 votes
1 answer
753 views

Add NOAA layers to OpenLayers map

I'm trying to add a NOAA hosted layer to an OpenLayers map. I've seen some examples of doing it with an older (pre 3) version of OpenLayers and of services no longer offered by NOAA. Has anyone ...
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Tiff file output using print composer has blocks of image scrambled (out of place)

I have used 2.18 to print maps to file (tiff) using print commposer. The base layer imported into QGIS consists of NOAA raster tiles. (My problem arises whether or not I have added other layers.) ...
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Is there an API for NOAA GOES 15 satellite data?

In August 2015, I was requesting GOES 15 GVAR_IMG satellite data because it had both visible and infrared light info (useful for studying cloud coverage and solar radiation). I remember having to ...
1 vote
1 answer
317 views

QGIS placing data incorrectly?

I have two layers open. One is a Natural Earth ocean layer, the other an output from an NOAA computer forecast model. The forecast model is misplaced to the east as seen in this image. QGIS knows: ...
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2 votes
1 answer
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Download AVHRR 1 km SST data

How to download NOAA AVHRR 1 km resolution sea surface temperature data? I need a SST 1 km image of the coast of Netherlands with at least 20 % valid pixels. After searching and searching I find the ...
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1 vote
3 answers
336 views

NOAA NHC WFS data not visible

I have worked with .shp, geodatabases and WMS formats in QGIS but I am new to working with WFS format. I have QGIS 2.18 installed on my computer. I am trying to open and view U.S. NOAA NHC WFSserver, ...
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1 vote
1 answer
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How do I convert a latitude/longitude coordinate to a NOAA GFS grid cell location?

Looking at this GFS http://nomads.ncep.noaa.gov:9090/dods/gfs_0p50/gfs20170707/gfs_0p50_12z.ascii?tmax2m[0:2][124:128][279:283] The range defined by the second and third set of brackets specify the ...
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Get CSV of specific data from NOAA NAM-NMM Dataset using wgrib2

I am trying to get data from the NAM-NMM Dataset and am having a lot of trouble getting the data I want out of the grb2 files. How can I get a CSV file containing information like Probability of ...
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2 votes
1 answer
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Interpolate grib2 data from GFS

I downloaded a grib2 file containing GFS data. I need to get wind and temperature from altitudes ranging from 1000 ft to 42000 ft I know the grib2 (GFS) only have data for specific "isobaricInhPa" ...
1 vote
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217 views

Less detailed FIPS polygons?

I'm working on a project which takes the NOAA NWS alerts and places them onto a Google Map. https://alerts.weather.gov/cap/us.php?x=0 Most alerts use the FIPS or UGC codes. I don't think I need the ...
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Which bands or channels these NOAA AVHRR satellite images involve? [closed]

These two satellite images are from NOAA AVHRR, but I do not know which bands or channels exactly both images represent. Can you tell me the band or channels that are involved?
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3 votes
1 answer
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Gdalinfo - missing corner coordinates

I came across some KAP charts which don't display correct corner coordinates from gdalinfo; despite them having REF fields in the header. For the NOAA file11425_3.KAP gdalinfo displays the coordinates:...
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2 votes
1 answer
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How to get value of uvIndex for a particular latitude and longitude from a grib2 file?

I'm trying to find out the uvIndex of a particular set of lat,lng. I'm getting the data file from this link. I'm using pygrib to read the file. import pygrib grbs = pygrib.open('uv.t12z.grbf01.grib2'...
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Render Vector & Save as Raster

I am working with ENC files from noaa, specifically S57 format or ".000" to be as specific as possible. I am trying to render a layer or even the entire thing in a window but have had no luck. ...
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3 votes
1 answer
550 views

VDatum helmert transform parameters

I'm trying to use NOAA's VDatum to verify the NAVD88 -> WGS84 datum conversion in a c++ datum conversion library that I've written. The answers didn't agree, so I attempted to check a simple ITRF2008 ...
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2 answers
239 views

Adding NOAA Radar to JavaScript Application

I am atempting to add NOAA's Dopler Radar to my web. For whatever reason the later will not display on the map. No errors are being reported and I have used console.log() to confirm the data is being ...
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2 votes
1 answer
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How can I download data from an FTP server using python? [closed]

I am trying to download precipitation data from an ftp server. The code that I am using is this, but am still getting errors. import urllib2 urlretrieve("http://ftp.cpc.ncep.noaa.gov/fews/fewsdata/...
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Downloading NOAA AVHRR NDVI using R

I am using the gimms package to automatically download NDVI data from 1981-2013. The code is provided here. The data is available here. However, after running it shows that data has been downloaded ...
10 votes
2 answers
21k views

How to extract specific information from GRIB files?

How to extract fetched GRIB data with Python and gribapi package (link goes to official ECMWF Wiki)? I tried to follow few examples from their "documentation" and do it myself, but I just cannot ...
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1 answer
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Downloading GRIB GFS files with specific filters?

Is it possible to download a smaller GRIB GFS file with specific parameters only (e.g. surface wind and temperature values) rather than hundreds of MB of data? If so, what is the usual approach to ...
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2 votes
2 answers
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NOAA API data for past monthly mean Temperature and precipitation

I am trying to use the NOAA API to get data on monthly mean temperature and precipitation for the past 10 years. I wrote the following python code (the variable "token" in the code is the API token ...
1 vote
1 answer
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Where can I get GIS data layers that show sea ice data for the Beaufort and Chukchi Seas?

I would like to put a layer on my basemap that shows sea ice coverage levels for both the Beaufort and Chukchi Seas off Alaska for the last few years. Is this available anywhere? Would I have to make ...
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6 votes
4 answers
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Accessing NOAA web service with token

I recently requested a NOAA "token" to access their data. However, I keep receiving a "Token parameter is required" 404 error. Here is the URL I am using (note token is not the real one): http://www....