Earthdata Forum

I am new to your services and need some assistance in navigating your website. I am looking to download daily photosynthetically active radiation (PAR) data for 2019-2022 for Door County, Wisconsin (specifically 45.06499, -87.12427). We are doing an orchid restoration project at The Ridges Sanctuary (https://www.ridgessanctuary.org/research/orchid-restoration-project/) and would like to have a PAR baseline to compare our on-site PAR measurements.

Thank you for any assistance you can provide.

Hello, please share the data access method (url and data selections, command as typed, code block) you attempted so we can get you help from the right subject matter experts.

Hi @polczynskim, All PAR data products available are listed here: https://search.earthdata.nasa.gov/search?fs10=Photosynthetically+Active+Radiation&fsm0=Vegetation&fst0=Biosphere

In addition, MCD18A2/MCD18C2 provide daily PAR: https://search.earthdata.nasa.gov/search?q=mcd18

Thanks for the quick response. I got to the websites, and am now trying to figure out how to download the exact data I am looking for. By any chance, is there a tutorial that might help me out?

@polczynskim, The available data tools and services vary depending on the product. Can you share which product(s) you are interested in?

MERRA-2 PAR products are in our Giovanni system, and that provides an opportunity to make a quick analysis for a particular region such as Door County. For Door County in particular, you would have to make a bounding box, or you could do the state of Wisconsin and just look at the values visually. I would suggest making a small bounding box centered on your region of interest and creating a time series which allows you to see the values in a CSV file over a period of time.

https://giovanni.gsfc.nasa.gov/giovanni/#service=TmAvMp&starttime=&endtime=&variableFacets=dataProductPlatformInstrument%3AMERRA-2%20Model%3B&dataKeyword=PAR