Goddard Space Flight Center

The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis

International audience

First‐Year <i>Wilkinson Microwave Anisotropy Probe</i> ( <i>WMAP</i> ) Observations: Determination of Cosmological Parameters

WMAP precision data enables accurate testing of cosmological models. We find that the emerging standard model of cosmology, a flat Λ−dominated universe seeded by a nearly scalei...

GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral

On August 17, 2017 at 12∶41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, ...

The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)

The Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), is the latest atmospheric reanalysis of the modern satellite era produced by NASA’s Glo...

AERONET—A Federated Instrument Network and Data Archive for Aerosol Characterization

SEVEN-YEAR<i>WILKINSON MICROWAVE ANISOTROPY PROBE</i>(<i>WMAP</i>) OBSERVATIONS: COSMOLOGICAL INTERPRETATION

(Abridged) The 7-year WMAP data and improved astrophysical data rigorously\ntest the standard cosmological model and its extensions. By combining WMAP with\nthe latest distance ...

The Astropy Project: Building an Open-science Project and Status of the v2.0 Core Package^*

Abstract The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed functionality to the astronomi...

The Version-2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979–Present)

The Global Precipitation Climatology Project (GPCP) Version 2 Monthly Precipitation Analysis is described. This globally complete, monthly analysis of surface precipitation at 2...

First‐Year <i>Wilkinson Microwave Anisotropy Probe</i> ( <i>WMAP</i> ) Observations: Preliminary Maps and Basic Results

We present full sky microwave maps in five frequency bands (23 to 94 GHz) from the WMAP first year sky survey. Calibration errors are less than 0.5% and the low systematic error...

Classification, Seasonality and Persistence of Low-Frequency Atmospheric Circulation Patterns

Orthogonally rotated principle component analysis (RPCA) of Northern Hemisphere 1-month mean 700 mb heights is used to identify and describe the seasonality and persistence of t...