Technical note: First spectral measurement of the Earth's upwelling emission using an uncooled wideband Fourier transform spectrometer L. Palchetti1, C. Belotti1, G. Bianchini1, F. Castagnoli1, B. Carli1, U. Cortesi1, M. Pellegrini1, C. Camy-Peyret2, P. Jeseck2, and Y. Té2 1Istituto di Fisica Applicata "Nello Carrara" - Consiglio Nazionale delle Ricerche, IFAC-CNR, Sesto Fiorentino, Firenze, I-50019, Italy 2Laboratoire de Physique Moléculaire pour l'Atmosphère et l'Astrophysique, LPMAA, Universite Pierre et Marie Curie – CNRS, Paris CEDEX 05, F-75252, France
Abstract. The first spectral measurement of Earth's emitted radiation to space
in the wideband range from 100 to 1400 cm−1 with 0.5 cm−1 spectral
resolution is presented. The measurement was performed from a
stratospheric balloon in tropical region using a Fourier transform
spectrometer, during a field campaign held in Brazil in June 2005.
The instrument, which has uncooled components including the detector
module, is a prototype developed as part
of the study for the REFIR (Radiation Explorer in the Far InfraRed)
space mission. This paper shows the results of the field campaign
with particular attention to the measurement capabilities of the
prototype. The results are compared with measurements taken by
IASI-balloon (Infrared Atmospheric Sounding Interferometer – Balloon
version), aboard the same platform, and with forward model estimations.
The infrared signature of clouds is observed in the measurements.
Citation: Palchetti, L., Belotti, C., Bianchini, G., Castagnoli, F., Carli, B., Cortesi, U., Pellegrini, M., Camy-Peyret, C., Jeseck, P., and Té, Y.: Technical note: First spectral measurement of the Earth's upwelling emission using an uncooled wideband Fourier transform spectrometer, Atmos. Chem. Phys., 6, 5025-5030, doi:10.5194/acp-6-5025-2006, 2006.