Iowa Environmental Mesonet
Iowa State University Department of Agronomy
The GIS page has everything GIS on the IEM
IEM Reanalysis (IEMRE)
IEM Reanalysis is an effort to provide a regular dataset of Iowa Environmental Data without many of the problems associated with single site observations. The IEM will continue to provide single site observational data, but for some purposes, this dataset will be easier to work with. No dataset is perfect and this dataset is provided without warranty.
- Why do this?
Previously, the IEM has only provided raw observations with limited quality control checks in place. Quality control is hard! Many times, users are simply looking for something "close" and perhaps not as perfect as high quality sensor observations can be. Producing a gridded analysis is one way to produce a dataset from point observations which can be sampled as a means of spatial interpolation. - Why just Iowa? I'm interested in the corn belt.
Yes, someday we hope to expand to at least the corn belt. - Isn't this a duplication of effort?
While there are other "reanalysis" type projects out there with data freely available, many times their data does not update in near real-time and does not include many of the datasets the IEM uniquely collects. We may also produce an analysis on sub-hourly timescales.
Data Availability
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Data Access
Here are some JSON web services you may try.
MultiDay Request
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Form: http://mesonet.agron.iastate.edu/iemre/multiday/{YYYY-MM-DD::date1}/{YYYY-MM-DD::date2}/{LAT}/{LON}/json
Example: http://mesonet.agron.iastate.edu/iemre/multiday/2010-05-01/2010-09-30/42.54/-96.40/json