GRASS GIS

How to aggregate daily data into MODIS-like 8 day aggregation pattern?

Several MODIS products come in “8-day” compositions. Suppose we have daily data and we want to aggregate it with this MODIS-like granularity. How can we achieve that? First idea would be to use the great t.rast.aggregate module in GRASS GIS with granularity=“8 days”. But this presents a problem. It does not re-start every year, but aggregates the whole series with 8-day granularity, not considering the year. Meanwhile, MODIS 8-day products re-start the aggregation every January 1st.

Remote Sensing of Phytoplankton Blooms in the Continental Shelf and Shelf-Break of Argentina: Spatio-Temporal Changes and Phenology

We studied the spatio-temporal variations of satellite chlorophyll-a (chl-a) and phytoplankton blooms in the continental shelf and shelf-break of the Argentinean patagonic region by means of an 11-years time series of level 3 (L3) MODIS/Aqua …

Spatio-temporal variations in chlorophyll-a concentration in the patagonic continental shelf: An example of satellite time series processing with GRASS GIS temporal modules

We studied the spatio-temporal variations of chlorophyll-a concentration and phytoplankton blooms in the continental shelf and shelf break of the Argentinean patagonic region by means of a time series of 11-years of MODIS/Aqua level 3 (L3) …

VARIABILIDAD ESPACIO-TEMPORAL DE FLORECIMIENTOS FITOPLANCTONICOS EN EL TALUD Y PLATAFORMA CONTINENTAL DE LA PATAGONIA ARGENTINA USANDO SENSORES REMOTOS

In this work we studied different aspects of spatio-temporal variability of chlorophyll-a concentration in the Continental Shelf and shelf break of the Argentinian patagonic region by means of a 11-years MODIS/Aqua L3 time series of 4 km spatial …

Estimating Hantavirus Risk in Southern Argentina: A GIS-based Approach Combining Human Cases and Host Distribution

We use a Species Distribution Modeling (SDM) approach along with Geographic Information Systems (GIS) techniques to examine the potential distribution of hantavirus pulmonary syndrome (HPS) caused by Andes virus (ANDV) in southern Argentina and, more …