jessie_zhx
New member
Hi
I am trying to understand the green vegetation fraction (gvf) dataset used in WPS. I have searched through the forum and found a few posts related to it. I still have a few questions and mostly hope to get some clarification.
1) It seems that the older dataset in the folder /greenfrac is derived using the NDVI dataset from AVHRR, is my understanding correct? For the newer datasets in folders such as /freenfrac_fpar_modis, are MODIS FPAR data directly used as green vegetation fraction in WPS or some sort of conversion is done to related FPAR to gvf? Also, do you know the year of the MODIS fpar dataset?
2) What is the year for LAI dataset in folders /lai_modis_10m(30s). I have seen a post that describes the year the of the land cover type used, but I have seen anything related to LAI and gvf yet.
Thank you so much for the help!
Jessie
I am trying to understand the green vegetation fraction (gvf) dataset used in WPS. I have searched through the forum and found a few posts related to it. I still have a few questions and mostly hope to get some clarification.
1) It seems that the older dataset in the folder /greenfrac is derived using the NDVI dataset from AVHRR, is my understanding correct? For the newer datasets in folders such as /freenfrac_fpar_modis, are MODIS FPAR data directly used as green vegetation fraction in WPS or some sort of conversion is done to related FPAR to gvf? Also, do you know the year of the MODIS fpar dataset?
2) What is the year for LAI dataset in folders /lai_modis_10m(30s). I have seen a post that describes the year the of the land cover type used, but I have seen anything related to LAI and gvf yet.
Thank you so much for the help!
Jessie