MEGANv2.1 8-day LAIv for 2003 to 2013 for US and North America

These are Leaf Area Index of vegetation covered surfaces (LAIv) data that can be used as inputs for the MEGAN2.1 model data pre-processor (see Guenther et al. 2012, doi.org/10.5194/gmd-5-1471-2012). 

Each file is described below

1-km LAIv for North America for year 2011 (filename: laiv2011.rar). These files were created in 2011 for use in MEGAN 2.1 for a project supported by the Western Governors' Association - Western Regional Air Partnership (WGA-WRAP). The 46 netcdf format files (one for each 8-day period) are combined into a single file (760MB zipped) and are based on MODIS (MOderate Resolution Imaging Spectroradiometer) satellite version 5 LAI product (MCD15A2.005) and the MEGAN2.1 total PFT cover fraction.  They have a file naming convention of lainaYYYYDDD.nc where YYYY is year and DDD is day of year at the start of the 8 day period (goes from 001 to 361).  The values range from 0 to 100 and the units are m2 leaf area per 10 m2 ground area which is the expected input for MEGAN2.1 data pre-processor.

1-km LAIv for North America for year 2013 (filename: laina2013.zip). These files were created in 2015 for use in MEGAN2.1 for a project supported by the Texas Air Quality Research Program (AQRP) . The 46 netcdf format files are combined in a single file ( 20MB zipped) and are based on MODIS (MOderate Resolution Imaging Spectroradiometer) satellite version 5 product (MCD15A2.005) and applied maximum green vegetation fraction from USGS which is also based on MODIS.   They have a file naming convention of laina2008DDD.nc where DDD is day of year at the start of the 8 day period (goes from 001 to 361). The file is labeled 2008, even though it is 2013 data, so that it can directly be used in the MEGAN2.1 or MEGAN3.0 LAI preprocessor which has the year 2008 as the default LAI file name. The values range from 0 to 100 and the units are m2 leaf area per 10 m2 ground area which is the expected input for MEGAN2.1 data pre-processor.

5-km LAIv for USA for individual years from 2003 to 2013 (filename: laiv5kmUS2003to2013.zip). These files were created in 2015 for use in MEGAN2.1 for a project supported by the Texas Air Quality Research Program (AQRP) . The 506 netcdf format files are grouped into 11 zipped files (one for each year) each with 46 files (one for each 8-day period). Each 1-year dataset is 31MB zipped and are based on MODIS (MOderate Resolution Imaging Spectroradiometer) satellite version 5 product (MCD15A2.005) and maximum green vegetation fraction from USGS, which is also based on MODIS.   They have a file naming convention of LAIv_YYYYDDD_WGS_5km.nc where YYYY is year and DDD is day of year at the start of the 8 day period (goes from 001 to 361).  The LAI name needs to be changed from the default in the MEGAN preprocessor. The values range from 0 to 100 and the units are m2 leaf area per 10 m2 ground area which is the expected input for MEGAN2.1 data pre-processor.