Instrument Overview

LIR detects thermal emission from the cloud top in a wavelength region 8 -- 12 μm to map the cloud-top temperature.

Contents

Definition of Product Level

Level 1b (l1b)
raw data (count value in FITS format)
Level 2b (l2b)
calibrated data (physical value in FITS format)
geometry (geo, geo4)
geometry information (latitude, longitude, local time, phase angle, incidence angle, emission angle, azimuthal angle) at the center of each pixel (geo) and at the lower-left corner of each pixel (geo4).
Level 3 (l3, l3x)
calibrated, physical values at equally spaced longitude-latitude grid in NetCDF format, derived from l2b data (l3), and pointing corrected geometry information at the center of each pixel (l3x).
Cloud Motion Vector (CMV)
CMVs at equally spaced longitude-latitude grid in NetCDF format obtained by using l3 data.

File Naming Convention

Filename is in "CAM_DATE_TIME_KIND_LEVEL_VER.EXT" format.

CAM
Name of the camera: lir for LIR.
DATE
date in UTC when image taken at in "YYYYMMDD" format, where YYYY is four-digit year (2010 -- 20??), MM is two-digit month (01 -- 12), and DD is two-digit day (01 -- 31): e.g., 20151207 for 2015-12-07.
TIME
time in UTC when image taken at in "hhmmss" format, where hh is two-digit hour (00 -- 23), mm is two-digit minutes (00 -- 59), and ss is two-digit seconds (00 -- 59): e.g., 052704 for 05:27:04.
KIND
kind of filter or image type: pic for picture, opn for open image, and sht for shutter (close) image.
LEVEL
level of product: l1b, l2b, l3, l3x, geo, and geo4.
VER
version string: v10 for "version 1.0".
EXT
extension that represents file type: fit for FITS file, jpg for JPEG file, png for PNG file, lbl for PDS3 label file, and nc for NetCDF file.

Data Processing tools

Citation

When you publish your own work based on the AKATSUKI LIR data, please refer to the following paper(s):

  1. Taguchi, M., T. Fukuhara, T. Imamura, M. Nakamura, N. Iwagami, M. Ueno, M. Suzuki, G. L. Hashimoto, K. Mitsuyama, Longwave infrared camera onboard the Venus Climate Orbiter, Adv. Space Res., 40, 861-868, doi:10.1016/j.asr.2007.05.085, 2007. URL
  2. Fukuhara, T., M. Taguchi, T. Imamura, M. Nakamura, M. Ueno, M. Suzuki, N. Iwagami, M. Sato, K. Mitsuyama, G. L. Hashimoto, R. Ohshima, T. Kouyama, H. Ando, M. Futaguchi, LIR: Longwave Infrared Camera onboard the Venus orbiter Akatsuki, Earth Planets Space, 63, doi:10.5047/eps.2011.06.019, 1009-1018, 2011. URL

Related Papers

Please see list of publications of AKATSUKI

Contacts

For questions concerning this archive:

Shin-ya Murakami, Japan Aerospace Exploration Agency, murashin _AT_ gfd-dennou.org
Yukio Yamamoto, Japan Aerospace Exploration Agency, yukio _AT_ planeta.sci.isas.jaxa.jp

For questions concerning the data:

Tetsuya Fukuhara, Rikkyo University, tetsuyaf _AT_ rikkyo.ac.jp
Toru Kouyama, National Institute of Advanced Industrial Science and Technology, t.kouyama _AT_ aist.go.jp
Makoto Taguchi, Rikkyo University, taguchi _AT_ rikkyo.ac.jp