diff --git a/optim_esm_tools/__init__.py b/optim_esm_tools/__init__.py
index 5b581da8..c846bde1 100644
--- a/optim_esm_tools/__init__.py
+++ b/optim_esm_tools/__init__.py
@@ -2,9 +2,10 @@
 __version__ = '0.1.1'
 __author__ = 'Joran R. Angevaare'
 
+from . import utils
+from . import config
 from . import analyze
 from . import cmip_files
 from . import synda_files
-from . import utils
 from . import _test_utils
 from . import plotting
diff --git a/optim_esm_tools/_test_utils.py b/optim_esm_tools/_test_utils.py
index 553b083d..101dc1b8 100644
--- a/optim_esm_tools/_test_utils.py
+++ b/optim_esm_tools/_test_utils.py
@@ -4,8 +4,12 @@
 EXMPLE_DATA_SET = 'CMIP6/ScenarioMIP/CCCma/CanESM5/ssp585/r3i1p2f1/Amon/tas/gn/v20190429/tas_Amon_CanESM5_ssp585_r3i1p2f1_gn_201501-210012.nc'
 
 
+def get_synda_loc():
+    return os.path.join(os.environ.get('ST_HOME'), 'data')
+
+
 def get_example_data_loc():
-    return os.path.join(os.environ.get('ST_HOME'), 'data', EXMPLE_DATA_SET)
+    return os.path.join(get_synda_loc(), EXMPLE_DATA_SET)
 
 
 def synda_test_available():
diff --git a/optim_esm_tools/analyze/cmip_handler.py b/optim_esm_tools/analyze/cmip_handler.py
index 83ed8f0e..00a77cd0 100644
--- a/optim_esm_tools/analyze/cmip_handler.py
+++ b/optim_esm_tools/analyze/cmip_handler.py
@@ -11,9 +11,9 @@
 
 from optim_esm_tools.utils import depricated
 
-from .globals import __OPTIM_VERSION__, folder_fmt
+from .globals import _CMIP_HANDLER_VERSION, _FOLDER_FMT
 from .xarray_tools import _native_date_fmt
-from optim_esm_tools.plotting.map_maker import MapMaker
+from optim_esm_tools.plotting.map_maker import MapMaker, make_title
 
 
 def read_ds(
@@ -45,7 +45,7 @@ def read_ds(
         min_time,
         max_time,
         _ma_window,
-        __OPTIM_VERSION__,
+        _CMIP_HANDLER_VERSION,
     )
 
     if os.path.exists(post_processed_file) and _cache:
@@ -72,7 +72,7 @@ def read_ds(
     folders = base.split(os.sep)
 
     # start with -1 (for i==0)
-    metadata = {k: folders[-i - 1] for i, k in enumerate(folder_fmt[::-1])}
+    metadata = {k: folders[-i - 1] for i, k in enumerate(_FOLDER_FMT[::-1])}
     metadata.update(
         dict(path=base, file=post_processed_file, running_mean_period=_ma_window)
     )
@@ -140,6 +140,8 @@ def _calculate_variables(
         detrended_run_mean.attrs['units'] = data_set[variable].attrs.get(
             'units', '{units}'
         )
+        for det in detrended, detrended_run_mean:
+            det.attrs.update(data_set[variable].attrs.copy())
         data_set[f'{variable}_run_mean_{_ma_window}'] = run_mean
         data_set[f'{variable}_detrend'] = detrended
         data_set[f'{variable}_detrend_run_mean_{_ma_window}'] = detrended_run_mean
diff --git a/optim_esm_tools/analyze/globals.py b/optim_esm_tools/analyze/globals.py
index 42e7c97f..f43ae941 100644
--- a/optim_esm_tools/analyze/globals.py
+++ b/optim_esm_tools/analyze/globals.py
@@ -1,3 +1,5 @@
-_seconds_to_year = 365.25 * 24 * 3600
-folder_fmt = 'model_group model scenario run domain variable grid version'.split()
-__OPTIM_VERSION__ = '0.1.11'
+from optim_esm_tools.config import config
+
+_SECONDS_TO_YEAR = int(config['constants']['seconds_to_year'])
+_FOLDER_FMT = config['CMIP_files']['folder_fmt'].split()
+_CMIP_HANDLER_VERSION = config['versions']['cmip_handler']
diff --git a/optim_esm_tools/analyze/tipping_criteria.py b/optim_esm_tools/analyze/tipping_criteria.py
index 14ef81e3..1418ef49 100644
--- a/optim_esm_tools/analyze/tipping_criteria.py
+++ b/optim_esm_tools/analyze/tipping_criteria.py
@@ -1,10 +1,9 @@
-from .xarray_tools import apply_abs
+from .xarray_tools import apply_abs, _native_date_fmt
 from optim_esm_tools.utils import check_accepts
 import xarray as xr
 import numpy as np
 import typing as ty
-
-from .globals import _seconds_to_year
+from .globals import _SECONDS_TO_YEAR
 
 
 @apply_abs()
@@ -169,7 +168,7 @@ def max_derivative(
     var_name = naming.format(variable=variable, running_mean=running_mean)
 
     data_array = _remove_any_none_times(data_set[var_name], time_var)
-    result = data_array.differentiate(time_var).max(dim=time_var) * _seconds_to_year
+    result = data_array.differentiate(time_var).max(dim=time_var) * _SECONDS_TO_YEAR
 
     var_unit = data_array.attrs.get('units', '{units}')
     name = data_array.attrs.get(rename_to, variable)
diff --git a/optim_esm_tools/cmip_files/__init__.py b/optim_esm_tools/cmip_files/__init__.py
index 588ef18f..56ec5a33 100644
--- a/optim_esm_tools/cmip_files/__init__.py
+++ b/optim_esm_tools/cmip_files/__init__.py
@@ -1 +1,2 @@
 from . import io
+from . import find_matches
diff --git a/optim_esm_tools/cmip_files/find_matches.py b/optim_esm_tools/cmip_files/find_matches.py
new file mode 100644
index 00000000..111ef1cb
--- /dev/null
+++ b/optim_esm_tools/cmip_files/find_matches.py
@@ -0,0 +1,134 @@
+import os
+import glob
+from optim_esm_tools.utils import check_accepts
+from optim_esm_tools.config import config, get_logger
+from collections import defaultdict
+
+
+@check_accepts(
+    accepts=dict(
+        activity_id=('ScenarioMIP', 'CMIP', '*'),
+        experiment_id=('piControl', 'historical', 'ssp585', '*'),
+    )
+)
+def find_matches(
+    base,
+    activity_id='ScenarioMIP',
+    institution_id='*',
+    source_id='*',
+    experiment_id='ssp585',
+    variant_label='*',
+    domain='Ayear',
+    variable_id='tas',
+    grid='*',
+    version='*',
+    max_versions=1,
+    max_members=1,
+):
+    """Follow synda folder format to find matches"""
+    if max_versions is None:
+        max_versions = int(9e9)
+    if max_members is None:
+        max_members = int(9e9)
+    variantes = sorted(
+        glob.glob(
+            os.path.join(
+                base,
+                activity_id,
+                institution_id,
+                source_id,
+                experiment_id,
+                variant_label,
+                domain,
+                variable_id,
+                grid,
+                version,
+            )
+        ),
+        key=_variant_label_id_and_version,
+    )
+    seen = dict()
+    for candidate in variantes:
+        folders = candidate.split(os.sep)
+        group = folders[-7]
+        member = folders[-5]
+        version = folders[-1]
+
+        if group not in seen:
+            seen[group] = defaultdict(list)
+        seen_members = seen[group]
+        if len(seen_members) < max_members or member in seen_members:
+            if len(seen_members.get(version, [])) == max_versions:
+                continue
+
+            seen_members[version].append(candidate)
+
+    return [
+        folder
+        for group_dict in seen.values()
+        for versions in group_dict.values()
+        for folder in versions
+    ]
+
+
+def _get_head(path):
+    log = get_logger()
+    if path.endswith(os.sep):
+        log.debug(f'Stripping tailing "/" from {path}')
+        path = path[: -len(os.sep)]
+
+    if os.path.isfile(path):
+        log.debug(f'Splitting file from {path}')
+        path = os.path.split(path)[0]
+    return path
+
+
+def is_excluded(path):
+    from fnmatch import fnmatch
+
+    path = _get_head(path)
+
+    for excluded in config['CMIP_files']['excluded'].split('\n'):
+        if not excluded:
+            continue
+        folders = excluded.split()
+
+        path_ends_with = os.path.join(*path.split(os.sep)[-len(folders) :])
+        match_to = os.path.join(*folders)
+        if fnmatch(path_ends_with, match_to):
+            return True
+    return False
+
+
+def _variant_label_id_and_version(full_path):
+    run_variant_number = None
+    grid_version = None
+    for folder in full_path.split(os.sep):
+        if len(folder):
+            if folder[0] == 'r' and run_variant_number is None:
+                index = folder.split('i')
+                if len(index) == 2:
+                    run_variant_number = int(index[0][1:])
+            if (
+                folder[0] == 'v'
+                and len(folder) == len('v20190731')
+                and grid_version is None
+            ):
+                grid_version = int(folder[1:])
+    if run_variant_number is None or grid_version is None:
+        raise ValueError(
+            f'could not find run and version from {full_path} {run_variant_number} {grid_version}'
+        )
+    return run_variant_number, -grid_version
+
+
+def folder_to_dict(path):
+    path = _get_head(path)
+    folders = path.split(os.sep)
+    if folders[-1][0] == 'v' and len(folders[-1]) == len('v20190731'):
+        return {
+            k: folders[-i - 1]
+            for i, k in enumerate(config['CMIP_files']['folder_fmt'].split()[::-1])
+        }
+        # great
+    raise NotImplementedError(f'folder {path} does not end with a version')
diff --git a/optim_esm_tools/config.py b/optim_esm_tools/config.py
new file mode 100644
index 00000000..74399334
--- /dev/null
+++ b/optim_esm_tools/config.py
@@ -0,0 +1,44 @@
+"""Shared common methods for reprocessing, not useful in itself"""
+from optim_esm_tools.utils import root_folder
+import configparser
+import logging
+import os
+import warnings
+
+if 'OPTIM_ESM_CONFIG' in os.environ:
+    config_path = os.environ['OPTIM_ESM_CONFIG']
+else:
+    _warn_later = True
+    config_path = os.path.join(root_folder, 'optim_esm_tools', 'optim_esm_conf.ini')
+
+config = configparser.ConfigParser()
+config.sections()
+config.read(config_path)
+
+_logger = {}
+
+
+def get_logger(name='oet'):
+    if name not in _logger:
+        logging.basicConfig(
+            level=getattr(logging, config['log']['logging_level'].upper()),
+            format=(
+                '%(asctime)s '
+                '| %(name)-12s '
+                '| %(levelname)-8s '
+                '| %(message)s '
+                '| %(funcName)s (l. %(lineno)d)'
+            ),
+            datefmt='%m-%d %H:%M',
+        )
+
+        log = logging.getLogger(name)
+        _logger[name] = log
+    return _logger[name]
+
+
+if _warn_later:
+    get_logger().info(
+        f'Using {config_path}-config. Overwrite by setting "OPTIM_ESM_CONFIG" '
+        f'as an environment variable'
+    )
diff --git a/optim_esm_tools/optim_esm_conf.ini b/optim_esm_tools/optim_esm_conf.ini
new file mode 100644
index 00000000..bc7b4c0b
--- /dev/null
+++ b/optim_esm_tools/optim_esm_conf.ini
@@ -0,0 +1,23 @@
+## Config file with defaults for optim_esm_tools
+
+[constants]
+# 365.25 * 24 * 3600
+seconds_to_year = 31557600
+
+[versions]
+cmip_handler = 0.1.13
+
+[display]
+progress_bar = True
+
+[CMIP_files]
+folder_fmt = institution_id source_id experiment_id variant_label domain variable_id grid version
+excluded =
+        # This one only has a dataset which is 5 years long, rendering it quire useless for 10yr running means
+        E3SM-Project E3SM-1-1-ECA piControl r1i1p1f1 * * gr v20201204
+
+        # Bad data https://errata.es-doc.org/static/index.html?experiment=ssp585&institute=thu&project=cmip6&source=ciesm
+        THU CIESM ssp585 r1i1p1f1 * * * v20200417
+
+[log]
+logging_level=WARNING
diff --git a/optim_esm_tools/plotting/map_maker.py b/optim_esm_tools/plotting/map_maker.py
index 720322a4..bd5b1621 100644
--- a/optim_esm_tools/plotting/map_maker.py
+++ b/optim_esm_tools/plotting/map_maker.py
@@ -13,7 +13,7 @@
 
 # import xrft
 
-from optim_esm_tools.analyze.globals import __OPTIM_VERSION__, _seconds_to_year
+from optim_esm_tools.analyze.globals import _SECONDS_TO_YEAR
 from optim_esm_tools.analyze.tipping_criteria import (
     running_mean_diff,
     running_mean_std,
@@ -54,8 +54,8 @@ def set_kw(self):
         import cartopy.crs as ccrs
 
         self.kw = immutabledict(
-            fig=dict(dpi=200, figsize=(12, 8)),
-            title=dict(fontsize=8),
+            fig=dict(dpi=200, figsize=(14, 10)),
+            title=dict(fontsize=12),
             gridspec=dict(hspace=0.3),
             cbar=dict(orientation='horizontal', extend='both'),
             plot=dict(transform=ccrs.PlateCarree()),
@@ -192,15 +192,15 @@ def __getattr__(self, item):
     def _ts_single(time_val, mean, std, plot_kw, fill_kw):
         if fill_kw is None:
             fill_kw = dict(alpha=0.4, step='mid')
-
         l = mean.plot(**plot_kw)
 
         if std is not None:
             # TODO, make this more elegant!
             # import cftime
             # plt.fill_between(   [cftime.real_datetime(dd.year, dd.month, dd.day) for dd in time_val], mean - std, mean+std, **fill_kw)
-            (mean - std).plot(color=l[0]._color, alpha=0.4, drawstyle='steps-mid')
-            (mean + std).plot(color=l[0]._color, alpha=0.4, drawstyle='steps-mid')
+
+            (mean - std).plot(color=l[0]._color, alpha=0.4)
+            (mean + std).plot(color=l[0]._color, alpha=0.4)
 
     def _ts(
         self,
@@ -284,18 +284,24 @@ def _ddt_ts(
             ds = self.data_set
         variable_rm = f'{variable}_run_mean_{running_mean}'
 
+        da = ds[variable]
+        da_rm = ds[variable_rm]
+
+        if other_dim:
+            da = da.mean(other_dim)
+            da_rm = da_rm.mean(other_dim)
         if not only_rm:
             # Dropna should take care of any nones in the data-array
-            dy_dt = ds[variable].mean(other_dim).dropna(time).differentiate(time)
-            dy_dt *= _seconds_to_year
+            dy_dt = da.dropna(time).differentiate(time)
+            dy_dt *= _SECONDS_TO_YEAR
             # mean, std = self._mean_and_std(dy_dt, variable=None, other_dim=other_dim)
             # plot_kw['label'] = variable
             # self._ts_single(ds[time].values, mean, std, plot_kw, fill_kw)
             label = f'd/dt {labels.get(variable, variable)}'
             dy_dt.plot(label=label, **plot_kw)
 
-        dy_dt_rm = ds[variable_rm].mean(other_dim).dropna(time).differentiate(time)
-        dy_dt_rm *= _seconds_to_year
+        dy_dt_rm = da_rm.dropna(time).differentiate(time)
+        dy_dt_rm *= _SECONDS_TO_YEAR
         label = (
             f"d/dt {labels.get(variable_rm, f'{variable} running mean {running_mean}')}"
         )
@@ -316,7 +322,7 @@ def _mean_and_std(ds, variable, other_dim):
         else:
             da = ds[variable]
         if other_dim is None:
-            return da.mean(other_dim), None
+            return da, None
         return da.mean(other_dim), da.std(other_dim)
 
     def time_series(
@@ -375,4 +381,6 @@ def title(self):
 
 
 def make_title(ds):
-    return '{model_group} {model} {scenario} {run} {variable}'.format(**ds.attrs)
+    return '{institution_id} {source_id} {experiment_id} {variant_label} {variable_id} {version}'.format(
+        **ds.attrs
+    )
diff --git a/optim_esm_tools/utils.py b/optim_esm_tools/utils.py
index 08dca877..40788f87 100644
--- a/optim_esm_tools/utils.py
+++ b/optim_esm_tools/utils.py
@@ -55,13 +55,13 @@ def setup_plt(use_tex=True, register_as='custom_map'):
     from cycler import cycler
 
     params = {
-        'axes.grid': False,
-        'font.size': 20,
-        'axes.titlesize': 22,
-        'axes.labelsize': 20,
+        'axes.grid': True,
+        'font.size': 18,
+        'axes.titlesize': 20,
+        'axes.labelsize': 18,
         'axes.linewidth': 2,
-        'xtick.labelsize': 20,
-        'ytick.labelsize': 20,
+        'xtick.labelsize': 18,
+        'ytick.labelsize': 18,
         'ytick.major.size': 8,
         'ytick.minor.size': 4,
         'xtick.major.size': 8,
@@ -72,7 +72,7 @@ def setup_plt(use_tex=True, register_as='custom_map'):
         'ytick.minor.width': 2,
         'xtick.direction': 'in',
         'ytick.direction': 'in',
-        'legend.fontsize': 20,
+        'legend.fontsize': 18,
         'figure.facecolor': 'w',
         'figure.figsize': (8, 6),
         'image.cmap': 'viridis',
diff --git a/test/test_find_matches.py b/test/test_find_matches.py
new file mode 100644
index 00000000..bfbc76e3
--- /dev/null
+++ b/test/test_find_matches.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+import unittest
+import optim_esm_tools as oet
+import os
+import matplotlib.pyplot as plt
+import subprocess
+from optim_esm_tools._test_utils import (
+    synda_test_available,
+    get_example_data_loc,
+    get_synda_loc,
+)
+
+
+@unittest.skipIf(not synda_test_available(), 'synda data not available')
+class TestMatches(unittest.TestCase):
+    def test_find_matches(self):
+        head = os.path.join(get_synda_loc(), 'CMIP6')
+        kw = oet.cmip_files.find_matches.folder_to_dict(get_example_data_loc())
+        assert len(
+            oet.cmip_files.find_matches.find_matches(
+                base=head,
+                **kw,
+            )
+        )
diff --git a/test/test_workflow.py b/test/test_workflow.py
index b0daf0f3..b8b400d0 100644
--- a/test/test_workflow.py
+++ b/test/test_workflow.py
@@ -54,7 +54,7 @@ def test_apply_relative_units(self, unit='relative'):
         from immutabledict import immutabledict
         from functools import partial
 
-        mm.kw = immutabledict(
+        mm.conditions = immutabledict(
             {
                 'i ii iii iv v vi vii viii ix x'.split()[i]: props
                 for i, props in enumerate(
@@ -79,7 +79,7 @@ def test_apply_relative_units(self, unit='relative'):
                 )
             }
         )
-        for i in mm.kw.keys():
+        for i in mm.conditions.keys():
             getattr(mm, i)
 
     def test_apply_std_unit(self):