Data_Altitude_CALIOP

Use this Forum to find information on, or ask a question about, NASA Earth Science data.
Post Reply
fernanda.cabello
Posts: 5
Joined: Thu Feb 23, 2023 2:54 pm America/New_York
Answers: 0

Data_Altitude_CALIOP

by fernanda.cabello » Fri Mar 03, 2023 1:57 pm America/New_York

Hello everyone,

I downloaded data from CALIOP (Lidar Level 2 Vertical Feature Mask), (VFM), on CALIPSO and used the data between -0.5 to 8.5 km from the Feature Classification Flag data block. I know that the first bit of that block (1166) corresponds to 8.5 km and the last bit to -0.5 km (5515) but I don't know what height the other bits correspond to. Does anyone know what is the height change between each bit ? Thank you!

Filters:

ASDC - David W.
User Services
User Services
Posts: 65
Joined: Tue Jun 08, 2021 11:29 pm America/New_York
Answers: 0

Re: Data_Altitude_CALIOP

by ASDC - David W. » Fri Mar 03, 2023 4:51 pm America/New_York

Hi Fernanda Cabello,

The vertical resolution between -0.5 to 8.2 km is 30 meters, according to the references I found below.

See the section "Layout of the Feature Classification Flag data block" on the following link.
https://www-calipso.larc.nasa.gov/resources/calipso_users_guide/data_summaries/vfm/index.php#feature_classification_flags

See Section 2.7 "Lidar Level 2 Vertical Feature Mask Data Product DP 2.1D" in the following document.
https://www-calipso.larc.nasa.gov/products/CALIPSO_DPC_Rev3x6.pdf

Hope that helps.

David W.
NASA Langley ASDC DAAC Lifecycle

Post Reply