Earthshine observations of the Earth's reflectance

  title={Earthshine observations of the Earth's reflectance},
  author={Philip R. Goode and J. Qiu and Vasyl B. Yurchyshyn and Jeffrey P. Hickey and Ming-chung Chu and Edwin Kolbe and Christopher T. Brown and S. E. Koonin},
  journal={Geophysical Research Letters},
Regular photometric observations of the moon's “ashen light” (earthshine) from the Big Bear Solar Observatory (BBSO) since December 1998 have quantified the earth's optical reflectance. We find large (∼5%) daily variations in the reflectance due to large‐scale weather changes on the other side of the globe. Separately, we find comparable hourly variations during the course of many nights as the earth's rotation changes that portion of the earth in view. Our data imply an average terrestrial… 

Earthshine and the Earth's albedo: 2. Observations and simulations over 3 years

[1] Since late 1998, we have been making sustained measurements of the Earth's reflectance by observing the earthshine from Big Bear Solar Observatory. Further, we have simulated the Earth's

Earth's Albedo 1998–2017 as Measured From Earthshine

The reflectance of the Earth is a fundamental climate parameter that we measured from Big Bear Solar Observatory between 1998 and 2017 by observing the earthshine using modern photometric techniques


There are terrestrial signatures of the solar activity cycle in ice core data (Ram & Stoltz 1999), but the variations in the sun`s irradiance over the cycle seem too small to account for the

Interannual variations in Earth's reflectance 1999–2007

[1] The overall reflectance of sunlight from Earth is a fundamental parameter for climate studies. Recently, measurements of earthshine were used to find large decadal variability in Earth's

Globally Integrated Measurements of the Earth’s Visible Spectral Albedo

We report spectroscopic observations of the earthshine reflected from the Moon. By applying our well-developed photometry methodology to spectroscopy, we are able to precisely determine the Earth's

Earthshine and the Earth's albedo: 1. Earthshine observations and measurements of the lunar phase function for accurate measurements of the Earth's Bond albedo

[1] We have been making sustained observations of the earthshine from Big Bear Solar Observatory in California since late 1998. We also have intermittent observations from 1994–1995. We have

Earth’s albedo time series reveals low radiative energy input in December 2020

The Earth’s spherical albedo describes the ratio of light reflected from the Earth to that incident from the Sun, an important input variable for the Earth’s radiation balance. The spherical albedo

Temporal Variation of the Shortwave Spherical Albedo of the Earth

The Earth’s spherical albedo describes the ratio of light reflected from the Earth to that incident from the Sun, an important variable for the Earth’s radiation balance. The spherical albedo has

Measurements of the Surface Brightness of the Earthshine with Applications to Calibrate Lunar Flashes

We have used the large database of photometric observations of the bright and dark portions of the face of the Moon from the Earthshine Project at Big Bear Solar Observatory to determine the surface

Earthshine : Photometry, modeling, and spectral observations

EARTHSHINE: PHOTOMETRY, MODELING, AND SPECTRAL OBSERVATIONS by Jeffrey Patrick Hickey The Earthshine group has been making sustained observations of the Earthshine from Big Bear Solar Observatory in



Characteristics of the earth's radiation budget derived from the first year of data from the Earth Radiation Budget Experiment

The first year of broadband Earth Radiation Budget Experiment (ERBE) data is analyzed for top-of-theatmosphere regional variations of outgoing longwave (LW) flux and planetary albedo for total scene

Earth radiation budgets

This paper presents the annual and seasonal averaged earth atmosphere radiation budgets derived from the most complete set of satellite observations available in late 1979. The budgets are derived

Global, seasonal cloud variations from satellite radiance measurements. II - Cloud properties and radiative effects

Abstract Global, daily, visible and infrared radiance measurements from the NOAA-5 Scanning Radiometer (SR) are analyzed for the months of January, April, July and October 1977 to infer cloud and

Global Change and the Dark of the Moon

Earthshine--the faint, reflected glow that sometimes illuminates the dark disk of the new moon--may hold valuable clues as to whether the earth is gradually getting warmer.

Sur l'albedo de la Terre

Albedo, Color, and Polarization of the Earth