Accelerated R with CUDA on Linux

The R programming language uses Basic Linear Algebra Subprograms (BLAS) for performing common linear algebra operations such as vector addition, scalar multiplication, dot products, linear combinations, and matrix multiplication. R includes Netlib BLAS by default. Significant performance gains can be achieved by replacing that with a different BLAS library such as OpenBLAS or ATLAS. Further […]

Scientific consensus: Earth’s climate is warming

NOTE: This is a mirror of the page climate.nasa.gov/scientific-consensus on 2016-12-16, posted here for safe keeping. Multiple studies published in peer-reviewed scientific journals1 show that 97 percent or more of actively publishing climate scientists agree: Climate-warming trends over the past century are extremely likely due to human activities. In addition, most of the leading scientific […]

TCCON

The Total Carbon Column Observing Network (TCCON) is a global network of instruments that measure the amount of carbon dioxide, methane, carbon monoxide, nitrous oxide and other trace gases in the Earth’s atmosphere. There are two TCCON instruments¬†in Australia: Darwin and Wollongong (and one nearby in Lauder, New Zealand).

Visualising OCO-2 XCO2 in R with DeltaRho

NASA JPL’s Orbiting Carbon Observatory 2 (OCO-2) was launched into sun-synchronous orbit around the Earth on July 2, 2014. It carries 3 grated spectrometers for measuring the spectrum of sunlight reflected off the surface of the earth,¬†which is used to calculate the average concentration of Carbon Dioxide in the column of atmosphere beneath the satellite […]

Remote Sensing Atmospheric CO2

Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object. In this context it refers to the use of NASA’s orbiting satellite OCO-2 to observe characteristics of the Earth’s atmosphere, specifically the concentration of Carbon Dioxide (CO2).

R on Hadoop with Tessera RHipe

This tutorial will show you how to perform parallel computation on a Hadoop cluster in R using Rhipe, with CSV files as input and output. The EVE Online computer game universe consists of 5201 solar systems for players to explore and conquer in virtual spaceships. Each solar system is connected to an average 2.6 other […]

Converting HDF5 to CSV

Hierarchical Data Format 5 is a popular file format for storing and managing large amounts of data. It is the format used by NASA for their ACOS and OCO-2 data products, which both contain (among other things) column-averaged CO2 in units of dry-air mole fraction (Xco2). This tutorial demonstrates how to extract the average daily […]