From 2a5686c6fe855502523e495e43bd381d14191c7b Mon Sep 17 00:00:00 2001
From: "Kenneth D. Mankoff" <mankoff@gmail.com>
Date: Tue, 19 Jul 2022 12:16:36 -0700
Subject: [PATCH] Make code match comments - use 64bit float

---
 xarray/coding/variables.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xarray/coding/variables.py b/xarray/coding/variables.py
index 3e3d8b07e3d..0cde2f53484 100644
--- a/xarray/coding/variables.py
+++ b/xarray/coding/variables.py
@@ -237,7 +237,7 @@ def _choose_float_dtype(dtype, has_offset):
         # Sensitivity analysis can be tricky, so we just use a float64
         # if there's any offset at all - better unoptimised than wrong!
         if not has_offset:
-            return np.float32
+            return np.float64
     # For all other types and circumstances, we just use float64.
     # (safe because eg. complex numbers are not supported in NetCDF)
     return np.float64