opendapr

opendapr is an R package that provides functions to harmonize and speed-up the download of some well-known and widely-used spatiotemporal Earth science datacubes (e.g. MODIS, VIIRS, GPM or SMAP) using the OPeNDAP framework (Open-source Project for a Network Data Access Protocol)

Harmonize ?

opendapr proposes a single function to query the various data servers, and another single function to download the data.

Speed-up ?

opendapr uses the abilities offered by the OPeNDAP to download a subset of data cube, along spatial, temporal or any other data dimension (depth, …). This way, it reduces downloading time and disk usage to their minimum : no more 1° x 1° MODIS tiles when your region of interest is only 100 km x 100 km wide ! Moreover, opendapr supports parallelized downloads.

Below is a comparison of opendapr with other packages available for downloading chunks of remote sensing data :

Package Data Spatial subsetting* Dimensional subsetting*
opendapr MODIS, VIIRS, SMAP, GPM ✅ ✅
MODIS MODIS ❌ ❌
MODIStsp MODIS ❌ ✅
MODISTools MODIS ✅ ✅
smapr SMAP ❌ ❌

* at the downloading phase

By enabling to download subsets of data cubes, opendapr facilites the access to Earth science data for R users in places where internet connection is slow or expensive and promotes digital sobriety for our research work.

The OPeNDAP, over which the package builds, is a project developed by the non-profit OPeNDAP, Inc. and advanced openly and collaboratively. By using this data access protocol, opendapr support the open-source-software movement.

Installation

The package can be installed with:

# install.packages("devtools")
devtools::install_github("ptaconet/opendapr", build_vignettes = T, build_manual = T)

Work is ongoing to publish the package on the CRAN.

Collections available in opendapr

Currently opendapr supports download of 77 data collections, extracted from the following meta-collections :

Details of each product available for download are provided in the table above or through the function odr_list_collections(). Want more details on a specific collection ? Click on the “DOI” column !

Data collections available for download with opendapr (click to expand)

Collection Name Source Nature DOI url_opendap_server
GPM_3IMERGDE.06 GPM IMERG Early Precipitation L3 1 day 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERGDE/DAY/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGDE.06/
GPM_3IMERGDF.06 GPM IMERG Final Precipitation L3 1 day 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERGDF/DAY/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGDF.06/
GPM_3IMERGDL.06 GPM IMERG Late Precipitation L3 1 day 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERGDL/DAY/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGDL.06/
GPM_3IMERGHH.06 GPM IMERG Final Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERG/3B-HH/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGHH.06/
GPM_3IMERGHHE.06 GPM IMERG Early Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERG/3B-HH-E/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGHHE.06/
GPM_3IMERGHHL.06 GPM IMERG Late Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERG/3B-HH-L/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGHHL.06/
GPM_3IMERGM.06 GPM IMERG Final Precipitation L3 1 month 0.1 degree x 0.1 degree V06 GPM Rainfall https://doi.org/10.5067/GPM/IMERG/3B-MONTH/06 https://gpm1.gesdisc.eosdis.nasa.gov/opendap/GPM_L3/GPM_3IMERGM.06/
MCD12Q1.006 MODIS/Terra+Aqua Land Cover Type Yearly L3 Global 500 m SIN Grid MODIS Land cover https://dx.doi.org/10.5067/MODIS/MCD12Q1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD12Q1.006/contents.html
MCD15A2H.006 MODIS/Terra+Aqua Leaf Area Index/FPAR 8-Day L4 Global 500 m SIN Grid MODIS Leaf area index https://dx.doi.org/10.5067/MODIS/MCD15A2H.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD15A2H.006/contents.html
MCD15A3H.006 MODIS/Terra+Aqua Leaf Area Index/FPAR 4-Day L4 Global 500 m SIN Grid MODIS Leaf area index https://dx.doi.org/10.5067/MODIS/MCD15A3H.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD15A3H.006/contents.html
MCD43A1.006 MODIS/Terra and Aqua BRDF/Albedo Model Parameters Daily L3 Global 500 m SIN Grid MODIS Albedo https://dx.doi.org/10.5067/MODIS/MCD43A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD43A1.006/contents.html
MCD43A2.006 MODIS/Terra and Aqua BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid MODIS Albedo https://dx.doi.org/10.5067/MODIS/MCD43A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD43A2.006/contents.html
MCD43A3.006 MODIS/Terra and Aqua Albedo Daily L3 Global 500 m SIN Grid MODIS Albedo https://dx.doi.org/10.5067/MODIS/MCD43A3.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD43A3.006/contents.html
MCD43A4.006 MODIS/Terra and Aqua Nadir BRDF-Adjusted Reflectance Daily L3 Global 500 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MCD43A4.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD43A4.006/contents.html
MCD64A1.006 MODIS/Terra+Aqua Burned Area Monthly L3 Global 500 m SIN Grid MODIS Burned areas https://dx.doi.org/10.5067/MODIS/MCD64A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MCD64A1.006/contents.html
MOD09A1.006 MODIS/Terra Surface Reflectance 8-Day L3 Global 500 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MOD09A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD09A1.006/contents.html
MOD09GA.006 MODIS/Terra Surface Reflectance Daily L2G Global 1 km and 500 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MOD09GA.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD09GA.006/contents.html
MOD09GQ.006 MODIS/Terra Surface Reflectance Daily L2G Global 250 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MOD09GQ.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD09GQ.006/contents.html
MOD09Q1.006 MODIS/Terra Surface Reflectance 8-Day L3 Global 250 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MOD09Q1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD09Q1.006/contents.html
MOD11A1.006 MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid V006 MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MOD11A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD11A1.006/contents.html
MOD11A2.006 MODIS/Terra Land Surface Temperature/Emissivity 8-Day L3 Global 1 km SIN Grid V006 MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MOD11A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD11A2.006/contents.html
MOD11B2.006 MODIS/Terra Land Surface Temperature/Emissivity 8-Day L3 Global 6 km SIN Grid MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MOD11B2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD11B2.006/contents.html
MOD11B3.006 MODIS/Terra Land Surface Temperature/Emissivity Monthly L3 Global 6 km SIN Grid MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MOD11B3.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD11B3.006/contents.html
MOD13A1.006 MODIS/Terra Vegetation Indices 16-Day L3 Global 500 m SIN Grid MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MOD13A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD13A1.006/contents.html
MOD13A2.006 MODIS/Terra Vegetation Indices 16-Day L3 Global 1 km SIN Grid MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MOD13A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD13A2.006/contents.html
MOD13A3.006 MODIS/Terra Vegetation Indices Monthly L3 Global 1 km SIN Grid MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MOD13A3.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD13A3.006/contents.html
MOD13Q1.006 MODIS/Terra Vegetation Indices 16-Day L3 Global 250m SIN Grid V006 MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MOD13Q1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD13Q1.006/contents.html
MOD15A2H.006 MODIS/Terra Leaf Area Index/FPAR 8-Day L4 Global 500 m SIN Grid MODIS Leaf area index https://dx.doi.org/10.5067/MODIS/MOD15A2H.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD15A2H.006/contents.html
MOD16A2.006 MODIS/Terra Net Evapotranspiration 8-Day L4 Global 500m SIN Grid V006 MODIS Evapotranspiration https://dx.doi.org/10.5067/MODIS/MOD16A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD16A2.006/contents.html
MOD16A2GF.006 MODIS/Terra Net Evapotranspiration Gap-Filled 8-Day L4 Global 500 m SIN Grid MODIS Evapotranspiration https://dx.doi.org/10.5067/MODIS/MOD16A2GF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD16A2GF.006/contents.html
MOD16A3GF.006 MODIS/Terra Net Evapotranspiration Gap-Filled Yearly L4 Global 500 m SIN Grid MODIS Evapotranspiration https://dx.doi.org/10.5067/MODIS/MOD16A3GF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD16A3GF.006/contents.html
MOD17A2H.006 MODIS/Aqua Gross Primary Productivity 8-Day L4 Global 500 m SIN Grid MODIS Primary Productivity https://dx.doi.org/10.5067/MODIS/MOD17A2H.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD17A2H.006/contents.html
MOD17A2HGF.006 MODIS/Terra Gross Primary Productivity Gap-Filled 8-Day L4 Global 500 m SIN Grid MODIS Primary Productivity https://dx.doi.org/10.5067/MODIS/MOD17A2HGF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD17A2HGF.006/contents.html
MOD17A3.055 MODIS/Terra Net Primary Production Yearly L4 Global 1 km SIN Grid MODIS Primary Productivity https://opendap.cr.usgs.gov/opendap/hyrax/MOD17A3.055/contents.html
MOD17A3HGF.006 MODIS/Terra Net Primary Production Gap-Filled Yearly L4 Global 500 m SIN Grid MODIS Primary Productivity https://dx.doi.org/10.5067/MODIS/MOD17A3HGF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MOD17A3HGF.006/contents.html
MODOCGA.006 MODIS/Terra Ocean Reflectance Daily L2G-Lite Global 1 km SIN Grid MODIS Ocean Reflectance https://dx.doi.org/10.5067/MODIS/MODOCGA.006 https://opendap.cr.usgs.gov/opendap/hyrax/MODOCGA.006/contents.html
MODTBGA.006 MODIS/Terra Thermal Bands Daily L2G-Lite Global 1 km SIN Grid MODIS Thermal Bands https://dx.doi.org/10.5067/MODIS/MODTBGA.006 https://opendap.cr.usgs.gov/opendap/hyrax/MODTBGA.006/contents.html
MYD09A1.006 MODIS/Aqua Surface Reflectance 8-Day L3 Global 500 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MYD09A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD09A1.006/contents.html
MYD09GA.006 MODIS/Aqua Surface Reflectance Daily L2G Global 1 km and 500 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MYD09GA.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD09GA.006/contents.html
MYD09GQ.006 MODIS/Aqua Surface Reflectance Daily L2G Global 250 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MYD09GQ.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD09GQ.006/contents.html
MYD09Q1.006 MODIS/Aqua Surface Reflectance 8-Day L3 Global 250 m SIN Grid MODIS Surface reflectance https://dx.doi.org/10.5067/MODIS/MYD09Q1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD09Q1.006/contents.html
MYD11A1.006 MODIS/Aqua Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid V006 MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MYD11A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD11A1.006/contents.html
MYD11A2.006 MODIS/Aqua Land Surface Temperature/Emissivity 8-Day L3 Global 1 km SIN Grid V006 MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MYD11A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD11A2.006/contents.html
MYD11B2.006 MODIS/Aqua Land Surface Temperature/Emissivity 8-Day L3 Global 6 km SIN Grid MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MYD11B2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD11B2.006/contents.html
MYD11B3.006 MODIS/Aqua Land Surface Temperature/Emissivity Monthly L3 Global 6 km SIN Grid MODIS Land surface temperature https://dx.doi.org/10.5067/MODIS/MYD11B3.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD11B3.006/contents.html
MYD13A1.006 MODIS/Aqua Vegetation Indices 16-Day L3 Global 500 m SIN Grid MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MYD13A1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD13A1.006/contents.html
MYD13A2.006 MODIS/Aqua Vegetation Indices 16-Day L3 Global 1 km SIN Grid MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MYD13A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD13A2.006/contents.html
MYD13A3.006 MODIS/Aqua Vegetation Indices Monthly L3 Global 1 km SIN Grid MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MYD13A3.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD13A3.006/contents.html
MYD13Q1.006 MODIS/Aqua Vegetation Indices 16-Day L3 Global 250m SIN Grid V006 MODIS Vegetation indices https://dx.doi.org/10.5067/MODIS/MYD13Q1.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD13Q1.006/contents.html
MYD15A2H.006 MODIS/Aqua Leaf Area Index/FPAR 8-Day L4 Global 500 m SIN Grid MODIS Leaf area index https://dx.doi.org/10.5067/MODIS/MYD15A2H.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD15A2H.006/contents.html
MYD16A2.006 MODIS/Aqua Net Evapotranspiration 8-Day L4 Global 500m SIN Grid V006 MODIS Evapotranspiration https://dx.doi.org/10.5067/MODIS/MYD16A2.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD16A2.006/contents.html
MYD16A2GF.006 MODIS/Aqua Net Evapotranspiration Gap-Filled 8-Day L4 Global 500 m SIN Grid MODIS Evapotranspiration https://dx.doi.org/10.5067/MODIS/MYD16A2GF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD16A2GF.006/contents.html
MYD16A3GF.006 MODIS/Aqua Net Evapotranspiration Gap-Filled Yearly L4 Global 500 m SIN Grid MODIS Evapotranspiration https://dx.doi.org/10.5067/MODIS/MYD16A3GF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD16A3GF.006/contents.html
MYD17A2H.006 MODIS/Terra Gross Primary Productivity 8-Day L4 Global 500 m SIN Grid MODIS Primary Productivity https://dx.doi.org/10.5067/MODIS/MYD17A2H.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD17A2H.006/contents.html
MYD17A2HGF.006 MODIS/Aqua Gross Primary Productivity Gap-Filled 8-Day L4 Global 500 m SIN Grid MODIS Primary Productivity https://dx.doi.org/10.5067/MODIS/MYD17A2HGF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD17A2HGF.006/contents.html
MYD17A3HGF.006 MODIS/Aqua Net Primary Production Gap-Filled Yearly L4 Global 500 m SIN Grid MODIS Primary Productivity https://dx.doi.org/10.5067/MODIS/MYD17A3HGF.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYD17A3HGF.006/contents.html
MYDOCGA.006 MODIS/Aqua Ocean Reflectance Daily L2G-Lite Global 1 km SIN Grid MODIS Ocean Reflectance https://dx.doi.org/10.5067/MODIS/MYDOCGA.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYDOCGA.006/contents.html
MYDTBGA.006 MODIS/Aqua Thermal Bands Daily L2G-Lite Global 1 km SIN Grid MODIS Thermal Bands https://dx.doi.org/10.5067/MODIS/MYDTBGA.006 https://opendap.cr.usgs.gov/opendap/hyrax/MYDTBGA.006/contents.html
SPL3SMP_E.003 SMAP Enhanced L3 Radiometer Global Daily 9 km EASE-Grid Soil Moisture, Version 3 SMAP Soil Moisture https://doi.org/10.5067/T90W6VRLCBHI https://n5eil02u.ecs.nsidc.org/opendap/SMAP/SPL3SMP_E.003/
VNP09A1.001 VIIRS/NPP Surface Reflectance 8-Day L3 Global 1 km SIN Grid VIIRS Surface reflectance https://doi.org/10.5067/VIIRS/VNP09A1.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP09A1.001/contents.html
VNP09H1.001 VIIRS/NPP Surface Reflectance 8-Day L3 Global 500 m SIN Grid VIIRS Surface reflectance https://doi.org/10.5067/VIIRS/VNP09H1.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP09H1.001/contents.html
VNP13A1.001 VIIRS/NPP Vegetation Indices 16-Day L3 Global 500 m SIN Grid VIIRS Vegetation indices https://doi.org/10.5067/VIIRS/VNP13A1.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP13A1.001/contents.html
VNP13A2.001 VIIRS/NPP Vegetation Indices 16-Day L3 Global 1 km SIN Grid VIIRS Vegetation indices https://doi.org/10.5067/VIIRS/VNP13A2.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP13A2.001/contents.html
VNP13A3.001 VIIRS/NPP Vegetation Indices Monthly L3 Global 1 km SIN Grid VIIRS Vegetation indices https://doi.org/10.5067/VIIRS/VNP13A3.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP13A3.001/contents.html
VNP14A1.001 VIIRS/NPP Thermal Anomalies/Fire Daily L3 Global 1 km SIN Grid VIIRS Thermal Anomalies/Fire https://doi.org/10.5067/VIIRS/VNP14A1.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP14A1.001/contents.html
VNP15A2H.001 VIIRS/NPP Leaf Area Index/FPAR 8-Day L4 Global 500 m SIN Grid VIIRS Leaf area index https://doi.org/10.5067/VIIRS/VNP15A2H.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP15A2H.001/contents.html
VNP21A1D.001 VIIRS/NPP Land Surface Temperature and Emissivity Daily L3 Global 1 km SIN Grid Day VIIRS Land surface temperature https://doi.org/10.5067/VIIRS/VNP21A1D.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP21A1D.001/contents.html
VNP21A1N.001 VIIRS/NPP Land Surface Temperature and Emissivity Daily L3 Global 1 km SIN Grid Night VIIRS Land surface temperature https://doi.org/10.5067/VIIRS/VNP21A1N.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP21A1N.001/contents.html
VNP21A2.001 VIIRS/NPP Land Surface Temperature and Emissivity 8-Day L3 Global 1 km SIN Grid VIIRS Land surface temperature https://doi.org/10.5067/VIIRS/VNP21A2.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP21A2.001/contents.html
VNP43IA2.001 VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid VIIRS Albedo https://doi.org/10.5067/VIIRS/VNP43IA2.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43IA2.001/contents.html
VNP43IA3.001 VIIRS/NPP Albedo Daily L3 Global 500 m SIN Grid VIIRS Albedo https://doi.org/10.5067/VIIRS/VNP43IA3.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43IA3.001/contents.html
VNP43IA4.001 VIIRS/NPP Nadir BRDF-Adjusted Reflectance Daily L3 Global 500 m SIN Grid VIIRS Surface reflectance https://doi.org/10.5067/VIIRS/VNP43IA4.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43IA4.001/contents.html
VNP43MA1.001 VIIRS/NPP BRDF/Albedo Model Parameters Daily L3 Global 1 km SIN VIIRS Albedo https://doi.org/10.5067/VIIRS/VNP43MA1.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43MA1.001/contents.html
VNP43MA2.001 VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 1 km SIN Grid VIIRS Albedo https://doi.org/10.5067/VIIRS/VNP43MA2.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43MA2.001/contents.html
VNP43MA3.001 VIIRS/NPP Albedo Daily L3 Global 1 km SIN Grid VIIRS Albedo https://doi.org/10.5067/VIIRS/VNP43MA3.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43MA3.001/contents.html
VNP43MA4.001 VIIRS/NPP Nadir BRDF-Adjusted Reflectance Daily L3 Global 1 km SIN VIIRS Surface reflectance https://doi.org/10.5067/VIIRS/VNP43MA4.001 https://opendap.cr.usgs.gov/opendap/hyrax/VNP43MA4.001/contents.html
VNP46A1 VIIRS/NPP Daily Gridded Day Night Band 500m Linear Lat Lon Grid Night VIIRS Nighttime lights https://doi.org/10.5067/VIIRS/VNP46A1.001 https://ladsweb.modaps.eosdis.nasa.gov/opendap/hyrax/allData/5000/VNP46A1/contents.html

Get Started

Downloading the data with opendapr is a simple two-steps workflow :

  • With the function odr_get_url(), get the URL(s) of the data for :

    • a collection : see previous section,
    • variables,
    • region of interest,
    • time range,
    • output data format (netcdf, ascii, json)

  • Next, with the function odr_download_data() : download the data to your computer.

Additional functions include : list collection available for download ( odr_list_collections() ), list variables available for each collection ( odr_list_variables() ), login to EOSDIS Earthdata before querying the servers and downloading the data (odr_login()).

Have a look at the vignette("opendapr1") to get started with a simple example, and for a more advanced workflow see the vignette("opendapr2") !

Next steps

Next developments may involve :

  • Short term : including more SMAP collections (at now only SPL3SMP_3.003 collection is available)
  • Longer term : including access to more collections and OPeNDAP servers

Any contribution is welcome !

Acknowledgments

We thank NASA and its partners for making all their Earth science data freely available, and implementing open data access protocols such as OPeNDAP. opendapr heavily builds on top of the OPeNDAP, so we thank the non-profit OPeNDAP, Inc. for developing the eponym tool in an open and collaborative way.

We also thank the contributors that have tested the package, reviewed the documentation and brought valuable feedbacks to improve the package : Florian de Boissieu, Julien Taconet, Nicolas Moiroux

The initial development and first release of this package were financed by the MIVEGEC unit of the French Research Institute for Sustainable Development, as part of the REACT project.