From 5121b9e3a15bd52d552fe6329cea93174c38ed0c Mon Sep 17 00:00:00 2001
From: mbrath <mbrath@aaf1aab0-4228-0410-ad68-8dceda47f409>
Date: Thu, 21 Mar 2024 09:23:39 +0000
Subject: [PATCH] * ARTS-XML-DATA-2.6-3

* planets/Earth/Optimized-Flux-Frequencies:

Add readme.


git-svn-id: https://radiativetransfer.org/svn/rt/arts-xml-data/branches/arts-xml-data-2.6@11435 aaf1aab0-4228-0410-ad68-8dceda47f409
---
 ChangeLog                                       |  8 ++++++++
 planets/Earth/Optimized-Flux-Frequencies/readme | 14 ++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 planets/Earth/Optimized-Flux-Frequencies/readme

diff --git a/ChangeLog b/ChangeLog
index f8f52d8a..b876a903 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2024-03-12 Manfred Brath <manfred.brath@uni-hamburg.de>
+
+    * ARTS-XML-DATA-2.6-3
+	
+	* planets/Earth/Optimized-Flux-Frequencies:
+	
+	Add readme.
+	
 2024-03-12 Manfred Brath <manfred.brath@uni-hamburg.de>
 
 	* ARTS-XML-DATA-2.6-2
diff --git a/planets/Earth/Optimized-Flux-Frequencies/readme b/planets/Earth/Optimized-Flux-Frequencies/readme
new file mode 100644
index 00000000..c5d40509
--- /dev/null
+++ b/planets/Earth/Optimized-Flux-Frequencies/readme
@@ -0,0 +1,14 @@
+This folder contains optimized set of frequencies and quadrature weights
+from Paulina Czarnecki for fast long and shortwave flux calculations.
+
+Use the frequencies as f_grid for the radiative transfer simulation and 
+the weights for the spectral integration.
+
+Originally the frequencies and weights were in the units of wavenumbers but 
+they are converted to Hz.
+
+For details on the algorithm for the frequency selection and weight estimation
+see:
+P. Czarnecki, L. Polvani, R. Pincus, Sparse, empirically optimized quadrature 
+for broadband spectral integration, Journal of Advances in Modeling Earth 
+Systems 15 (10) (2023) https://doi.org/10.1029/2023MS003819
-- 
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