Search found 222 matches

by GES DISC - ingridgs
Thu Sep 03, 2026 3:27 pm America/New_York
Forum: Home
Question: Why AIRS L1B HSB radiation data (AISRHBRAD brightness temperature) always display -9999.0 for channel 1?
Replies: 0

Why AIRS L1B HSB radiation data (AISRHBRAD brightness temperature) always display -9999.0 for channel 1?

Answer:

HSB channel 1 was never implemented and so always -9999.0. There are four channels (channel 2-5) in HSB and their characteristics are summarized below.
Screenshot 2026-09-03 at 3.29.57 PM.png
by GES DISC - ingridgs
Thu Sep 03, 2026 3:24 pm America/New_York
Forum: Home
Question: What is AIRS Algorithm Version versus Data Collection?
Replies: 0

What is AIRS Algorithm Version versus Data Collection?

Answer: Version 2.7 Algorithm produced Collection 1 Version 3 Algorithm produced Collection 2 Version 4 Algorithm produced Collection 3 Version 5 Algorithm produces Collection 5 Starting with the delivery of Algorithm Version 4 in 2005, AIRS Instrument Team began to produce two types of retrievals ...
by GES DISC - ingridgs
Thu Sep 03, 2026 3:19 pm America/New_York
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Question: What is "Golden Set of Channels" offered for AIRS channel subsetting services ?
Replies: 0

What is "Golden Set of Channels" offered for AIRS channel subsetting services ?

Answer: These are the groups of channels recommended by the AIRS Science Team for channel subsetting of AIRS L1B and L2 products. See table below. The grouping is generally based on hardware module in the AIRS instrument. The channel number range and the frequency range in addition to module name f...
by GES DISC - ingridgs
Thu Sep 03, 2026 3:15 pm America/New_York
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Question: Does AIRS Level-2 product include measurements from AMSU and HSB?
Replies: 0

Does AIRS Level-2 product include measurements from AMSU and HSB?

Answer: One flavor of the AIRS Level-2 Standard and Support Products does. Their product names are AIRH2RET and AIRH2SUP respectively. The end date for these products is 2003-Feb-05 due to HSB instrument failure. The Standard Product (AIRX2RET) and Support Product (AIRX2SUP) are created using only ...
by GES DISC - ingridgs
Thu Sep 03, 2026 3:13 pm America/New_York
Forum: Home
Question: Can radiance value be negative?
Replies: 0

Can radiance value be negative?

Answer: In general, AIRS can have negative radiances for shortwave channels. When the scene temperature is low, below 200K, shortwave AIRS channels can have negative radiances. This happens over very high cloud in tropics and over Antartica. In bad channels, radiance can be negative for several dif...
by GES DISC - ingridgs
Thu Sep 03, 2026 3:10 pm America/New_York
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Question: In which AWS region do GES DISC data reside?
Replies: 0

In which AWS region do GES DISC data reside?

Answer:

GES DISC data are stored in the AWS region US West (Oregon), or us-west-2.
by GES DISC - ingridgs
Thu Sep 03, 2026 3:07 pm America/New_York
Forum: Home
Question: Do I have to pay for cloud computing resources? How much does it cost?
Replies: 0

Do I have to pay for cloud computing resources? How much does it cost?

Answer:
Yes, the user maintains responsibility for their own cloud computing resources. Cost is variable depending on which cloud compute types you choose.

See guidance on Understanding and Managaing Costs in the AWS Cloud.
by GES DISC - ingridgs
Thu Sep 03, 2026 3:04 pm America/New_York
Forum: Home
Question: Can I perform direct S3 access outside of my account's default region?
Replies: 0

Can I perform direct S3 access outside of my account's default region?

Answer: Yes, but first you will need to enable the region of interest in your AWS account . For example, to acquire GES DISC data using direct S3 access , you will need to enable the us-west-2 region in your account and then use an AWS service in that region (e.g. EC2 instance , AWS Command Line In...
by GES DISC - ingridgs
Thu Sep 03, 2026 3:00 pm America/New_York
Forum: Home
Question: Do I have to pay to access GES DISC data stored in the Earthdata Cloud?
Replies: 0

Do I have to pay to access GES DISC data stored in the Earthdata Cloud?

Answer:

As part of NASA's commitment to open science, data access will continue to be free to users.
by GES DISC - ingridgs
Thu Sep 03, 2026 2:57 pm America/New_York
Forum: Home
Question: Can I obtain the forcing data set that was used in GLDAS?
Replies: 0

Can I obtain the forcing data set that was used in GLDAS?

Answer: Forcing data are atmospheric inputs to the land surface models, including precipitation (rain and snow), radiation, surface wind, temperature, pressure, and humidity (see Tables 3.1 ~ 3.4 in the GLDAS-2 README ). GLDAS-2.0 forcing data – the global meteorological forcing dataset from Prince...