NOAA provides weather data. You can see the general information and visualization at http://www.weather.gov/ Specific data products are found at http://www.ncdc.noaa.gov/most-popular-data When you click on a dataset you are interested, there is technical documentation and material to guide you in the use of the data. For example, local climatological data ...
Where are you searching? The NOAA and all of its child departments/organizations provide a plethora of satellite and API datasets, including satellite datasets accessible via API. The list below is a tiny sampling of all three; I cannot stress enough how much more data there is. NOAA is basically a cornucopia of satellite/API datasets.
API Web Service - ...
This seems to be the same data mentioned at http://shallowsky.com/blog/programming/NOAA-weather.html .
In their write up, they also link to NOAA's documentation for the document.
Note that this is what's commonly called an 'ASCII table', in which it is not delimited, but contains a number of fixed-width columns.
As such, the field is not '0.00G' but ...
European data can be obtained from ECMWF at http://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=sfc/ and they have an API https://software.ecmwf.int/wiki/display/WEBAPI/Python+ERA-interim+examples
I emailed the NOAA and got a very fast response from William Brown:
Both the QCLCD and ISD digital surface hourly data bases contain the
same stations. QCLCD is a 'subset" of the much larger (global) ISD
data base. Typically for research purposes I would recommend ISD. You
can download the data in bulk and, due to format differences only, the
areas in ny, including some boroughs but i don't see them all:
historical nyc noaa data:
wunderground for yesterday 2015-12-05, you can alter dates back to 1943 via omnibox browser command line, aka url ;):
I have contacted NOAA directly with this question, and the answer was (emphasis mine):
As you have described it below, you are not in violation of Resolution
40. This would apply if you are redistributing the data as-is for profit.
If you are unsure about your particular use case, I suggest contacting NOAA directly.
Because of ISO's business model, they always charge for standards ... however, as many editors want the standards to be freely available, many TCs (technical committees, a group of people that oversee a group of ANSI standards) post the final draft of the standard and make those freely available, as they're more interested in adoption rather than profit-...
Short answer: because ISO makes money selling the technical specifications. It's not closed the standard per se, but the specification (so if you're writing software you'd need the document.
Searching on the net I found the first edition of the standard ftp://podaac.jpl.nasa.gov/misc/outgoing/ed/pre_2013/GHRSST_metadata/ISO%2019115%20.pdf
Also from NOAA some ...
I asked on the ESSI (earth & space science informatics) mailing list, and received a response from Mark Lackey :
At the link above there is some (older) Fortran routines that may be
helpful. If it isn't we do have some perl-based parsing routines that we
might be able to add in the near ...
Open GIS-ready cloud data are available at various levels of detail, both in time and space.
It is quite tempting to work with satellite photos of cloud coverage; unless you are a professional, don't do that - there are a bunch of hidden snags you have to know about.
For current data on (points) airfields and airports of the world, your best bet is METAR, ...
JSON is a simple text based data format than can be converted to arrays or any structured data to access it in ...
Besides the NCDC data for forecasts, you can also get pretty detailed meterological information for airports (US and international) in METAR format:
... but to make use of it, you need to be able to decode the station codes to find airports near the location of interest.
The live weather feeds for weather stations, reporting to the NWS, in the State of New York can be found here at the link below. Each station has its own update interval. The XML feed is really HTML, so you will have to parse it as a HTML table.
There is a comparison of different weather forecast services here:
Maybe this helps to select the best service for your requirements.
Here are the instructions to use the NOAA webservices API that provides access to current data - http://www.ncdc.noaa.gov/cdo-web/webservices/v2 - according to their site:
This API is for developers looking to create their own scripts or
programs that use the CDO database of weather and climate data. An
access token is required to use the API, and ...
You can get custom historical datasets for any geographic region (or stations) in the country from NOAA At:
The National Weather Service has a online API where you can get real-time weather data:
There are a couple of datasets at NOAA's National Centers for Environmental Information that can help. NDFD is good, but it is based on forecast model output and not station data ("ground truth"). For starters I would use the U.S. Local Climatological Data (LCD). You could use the Min/Max dry bulb temperature, but it has several climatological data types ...
This list from NOAA
has a bunch of station data for various networks (primarily WBAN and COOP) its a text file but it opens very nicely in excel with fixed width columns where you can sort based on the criteria you've specified. It includes counties for most stations and lat lon for all stations. Stations ...
As it turns out, the NOAA did respond (rather quickly too i might add)!
Regarding snowfall measurement and positive precipitation observations during snow (edited excerpt of email exchange):
"The ASOS systems don't measure snowfall, so you won't find it there. You will have liquid equivalent precipitation (the rain gauges are heated). However, even that ...
NASA has a project called Precipitation Measurement Missions. In theory, this is a 3-hourly dataset of precipitation for any location within 60° of the equator, based on satellite data. You can find more information here.
In theory it does both snowfall and rainfall. However, spaceborne remote sensing of snowfall is difficult — if you are interested in ...
So I emailed the NOAA, and they responded pretty quickly with clarification (props to them!)
Q: My understanding of the "WeatherType" is that it is an "abbreviated 3-hourly weather observations" (from the QCLCD summary at https://data.noaa.gov/dataset/quality-controlled-local-climatological-data-qclcd-publication ). Is it more of a 3-hour summarized outlook ...
Without all of the original data, and its metadata, any answer here can only offer a guide as to how to start answering your questions.
Your first question is: "where is the problem?"
Your second question is: "is GSOD biased?"
Both of these must start with further statistical analysis.
And you need to analyse the metadata for the datasets you are ...